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Found 89 entries in the Bibliography.
Showing entries from 1 through 50
| 2023 |
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Small-scale EUV features as the drivers of coronal upflows in the quiet Sun Context. Coronal upflows in the quiet Sun are seen in a wide range of features, including jets and filament eruptions. The in situ measurements from Parker Solar Probe within \ensuremath\approx0.2 au have demonstrated that the solar wind is highly structured, showing abrupt and near-ubiquitous magnetic field reversals (i.e., switchbacks) on different timescales. The source of these structures has been associated with supergranular structures on the solar disc. This raises the question of whether there are additional small co ... Schwanitz, Conrad; Harra, Louise; Mandrini, Cristina; Sterling, Alphonse; Raouafi, Nour; Cormack, Cecilia; Berghmans, David; Auchère, Fr\; Barczynski, Krzysztof; Cuadrado, Regina; Buchlin, Eric; Kraaikamp, Emil; Long, David; Parenti, Susanna; Peter, Hardi; Rodriguez, Luciano; Schühle, Udo; Smith, Phil; Teriaca, Luca; Verbeeck, Cis; Zhukov, Andrei; Published by: \aap Published on: jun YEAR: 2023 DOI: 10.1051/0004-6361/202346036 Parker Data Used; Sun: corona; Solar wind; Sun: UV radiation |
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The 17 April 2021 widespread solar energetic particle event Context. A complex and long-lasting solar eruption on 17 April 2021 produced a widespread solar energetic particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere that covered distances to the Sun from 0.42 to 1 au: BepiColombo, Parker Solar Probe, Solar Orbiter, STEREO A, and near-Earth spacecraft. The event was the second widespread SEP event detected in solar cycle 25, and it produced relativistic electrons and protons. It was associated with a long-lasting solar hard ... Dresing, N.; ia, Rodr\; Jebaraj, I.~C.; Warmuth, A.; Wallace, S.; Balmaceda, L.; Podladchikova, T.; Strauss, R.~D.; Kouloumvakos, A.; Palmroos, C.; Krupar, V.; Gieseler, J.; Xu, Z.; Mitchell, J.~G.; Cohen, C.~M.~S.; De Nolfo, G.~A.; Palmerio, E.; Carcaboso, F.; Kilpua, E.~K.~J.; Trotta, D.; Auster, U.; Asvestari, E.; da Silva, D.; Dröge, W.; Getachew, T.; omez-Herrero, R.; Grande, M.; Heyner, D.; Holmström, M.; Huovelin, J.; Kartavykh, Y.; Laurenza, M.; Lee, C.~O.; Mason, G.; Maksimovic, M.; Mieth, J.; Murakami, G.; Oleynik, P.; Pinto, M.; Pulupa, M.; Richter, I.; iguez-Pacheco, Rodr\; anchez-Cano, B.; Schuller, F.; Ueno, H.; Vainio, R.; Vecchio, A.; Veronig, A.~M.; Wijsen, N.; Published by: \aap Published on: jun YEAR: 2023 DOI: 10.1051/0004-6361/202345938 Parker Data Used; Sun: particle emission; Sun: heliosphere; Sun: flares; Sun: coronal mass ejections (CMEs); Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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The 17 April 2021 widespread solar energetic particle event Context. A complex and long-lasting solar eruption on 17 April 2021 produced a widespread solar energetic particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere that covered distances to the Sun from 0.42 to 1 au: BepiColombo, Parker Solar Probe, Solar Orbiter, STEREO A, and near-Earth spacecraft. The event was the second widespread SEP event detected in solar cycle 25, and it produced relativistic electrons and protons. It was associated with a long-lasting solar hard ... Dresing, N.; ia, Rodr\; Jebaraj, I.~C.; Warmuth, A.; Wallace, S.; Balmaceda, L.; Podladchikova, T.; Strauss, R.~D.; Kouloumvakos, A.; Palmroos, C.; Krupar, V.; Gieseler, J.; Xu, Z.; Mitchell, J.~G.; Cohen, C.~M.~S.; De Nolfo, G.~A.; Palmerio, E.; Carcaboso, F.; Kilpua, E.~K.~J.; Trotta, D.; Auster, U.; Asvestari, E.; da Silva, D.; Dröge, W.; Getachew, T.; omez-Herrero, R.; Grande, M.; Heyner, D.; Holmström, M.; Huovelin, J.; Kartavykh, Y.; Laurenza, M.; Lee, C.~O.; Mason, G.; Maksimovic, M.; Mieth, J.; Murakami, G.; Oleynik, P.; Pinto, M.; Pulupa, M.; Richter, I.; iguez-Pacheco, Rodr\; anchez-Cano, B.; Schuller, F.; Ueno, H.; Vainio, R.; Vecchio, A.; Veronig, A.~M.; Wijsen, N.; Published by: \aap Published on: jun YEAR: 2023 DOI: 10.1051/0004-6361/202345938 Parker Data Used; Sun: particle emission; Sun: heliosphere; Sun: flares; Sun: coronal mass ejections (CMEs); Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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Interferometric imaging of the type IIIb and U radio bursts observed with LOFAR on 22 August 2017 Context. The Sun is the source of different types of radio bursts that are associated with solar flares, for example. Among the most frequently observed phenomena are type III solar bursts. Their radio images at low frequencies (below 100 MHz) are relatively poorly studied due to the limitations of legacy radio telescopes. \ Aims: We study the general characteristics of types IIIb and U with stria structure solar radio bursts in the frequency range of 20-80 MHz, in particular the source size and evolution in different altitu ... Dabrowski, Bartosz; Miku\la, Katarzyna; Flisek, Pawe\l; Vocks, Christian; Zhang, PeiJin; c, Jasmina; Warmuth, Alexander; Morosan, Diana; n, Adam; Fallows, Richard; Bisi, Mario; Krankowski, Andrzej; Mann, Gottfried; B\laszkiewicz, Leszek; Carley, Eoin; Gallagher, Peter; Zucca, Pietro; Rudawy, Pawe\l; Hajduk, Marcin; Kotulak, Kacper; Sidorowicz, Tomasz; Published by: \aap Published on: jan YEAR: 2023 DOI: 10.1051/0004-6361/202142905 Parker Data Used; Sun: radio radiation; Sun: UV radiation; Sun: activity; methods: observational; Astrophysics - Solar and Stellar Astrophysics |
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Context. During the first close perihelion pass of Solar Orbiter, a series of impulsive $^3$He-rich solar particle events was observed on 18-19 March 2022 from a distance of 0.36 au. In addition to the energetic particle, radio, and X-ray data from Solar Orbiter, the events were observed in radio and/or extreme ultraviolet by STEREO-A, SDO, Wind, and Parker Solar Probe. \ Aims: Observations of the event series along with remote sensing of flaring and radio emission with only small timing delays due to the close distance allo ... Mason, G.~M.; Nitta, N.~V.; ik, Bu\vc\; omez-Herrero, R.; Krupar, V.; Krucker, S.; Ho, G.~C.; Allen, R.~C.; Kouloumvakos, A.; Wimmer-Schweingruber, R.~F.; Rodriguez-Pacheco, J.; Vecchio, A.; Maksimovic, M.; Published by: \aap Published on: jan YEAR: 2023 DOI: 10.1051/0004-6361/202245576 Parker Data Used; acceleration of particles; Sun: flares; Sun: particle emission; Sun: radio radiation; Sun: UV radiation; Sun: X-rays; gamma rays |
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Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves? Evidence for the presence of ion cyclotron waves (ICWs), driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the joint observations performed by Parker Solar Probe and the Metis coronagraph on board Solar Orbiter, local measurements of the solar wind can be linked with the large-scale structures of the solar corona. The results suggest that the dynamics of the current sheet layers generates turbulence, which in turn creates a sufficiently strong temperat ... Telloni, Daniele; Zank, Gary; Adhikari, Laxman; Zhao, Lingling; Susino, Roberto; Antonucci, Ester; Fineschi, Silvano; Stangalini, Marco; Grimani, Catia; Sorriso-Valvo, Luca; Verscharen, Daniel; Marino, Raffaele; Giordano, Silvio; Amicis, Raffaella; Perrone, Denise; Carbone, Francesco; Liberatore, Alessandro; Bruno, Roberto; Zimbardo, Gaetano; Romoli, Marco; Andretta, Vincenzo; Da Deppo, Vania; Heinzel, Petr; Moses, John; Naletto, Giampiero; Nicolini, Gianalfredo; Spadaro, Daniele; Teriaca, Luca; Burtovoi, Aleksandr; De Leo, Yara; Jerse, Giovanna; Landini, Federico; Pancrazzi, Maurizio; Sasso, Clementina; Slemer, Alessandra; Published by: \apj Published on: feb YEAR: 2023 DOI: 10.3847/1538-4357/acb693 Parker Data Used; Magnetohydrodynamics; interplanetary turbulence; Alfven waves; Solar corona; Solar coronal heating; Coronagraphic imaging; Solar wind; Heliosphere; Space plasmas; 1964; 830; 23; 1483; 1989; 313; 1534; 711; 1544; Astrophysics - Solar and Stellar Astrophysics |
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Context. The fast solar wind is known to emanate from polar coronal holes. \ Aims: This Letter reports the first estimate of the expansion rate of polar coronal flows performed by the Metis coronagraph on board Solar Orbiter. \ Methods: By exploiting simultaneous measurements in polarized white light and ultraviolet intensity of the neutral hydrogen Lyman-\ensuremath\alpha line, it was possible to extend observations of the outflow velocity of the main component of the solar wind from polar coronal holes out to 5.5 R$_\ensur ... Telloni, D.; Antonucci, E.; Adhikari, L.; Zank, G.~P.; Giordano, S.; Vai, M.; Zhao, L.; Andretta, V.; Burtovoi, A.; Capuano, G.~E.; Da Deppo, V.; De Leo, Y.; Fineschi, S.; Grimani, C.; Heinzel, P.; Jerse, G.; Landini, F.; Liberatore, A.; Moses, J.~D.; Naletto, G.; Nicolini, G.; Pancrazzi, M.; Romoli, M.; Russano, G.; Sasso, C.; Slemer, A.; Spadaro, D.; Stangalini, M.; Susino, R.; Teriaca, L.; Uslenghi, M.; Sorriso-Valvo, L.; Marino, R.; Perrone, D.; Amicis, R.; Bruno, R.; Published by: \aap Published on: feb YEAR: 2023 DOI: 10.1051/0004-6361/202245759 Parker Data Used; magnetohydrodynamics (MHD); Sun: corona; Solar wind; Sun: UV radiation |
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Identifying the energy release site in a solar microflare with a jet Context. One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. \ Aims: We aim to investigate the electron acceleration and energy release sites as well as the manner in which accelerated electrons access the interplanetary space in the case of the SOL2021-02-18T18:05 event, a GOES A8 class microflare associated with a coronal jet. \ Methods: This study takes ... Battaglia, Andrea; Wang, Wen; Saqri, Jonas; Podladchikova, Tatiana; Veronig, Astrid; Collier, Hannah; Dickson, Ewan; Podladchikova, Olena; Monstein, Christian; Warmuth, Alexander; Schuller, Fr\; Harra, Louise; Krucker, Säm; Published by: \aap Published on: feb YEAR: 2023 DOI: 10.1051/0004-6361/202244996 Parker Data Used; Sun: flares; Sun: corona; Sun: X-rays; gamma rays; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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Identifying the energy release site in a solar microflare with a jet Context. One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. \ Aims: We aim to investigate the electron acceleration and energy release sites as well as the manner in which accelerated electrons access the interplanetary space in the case of the SOL2021-02-18T18:05 event, a GOES A8 class microflare associated with a coronal jet. \ Methods: This study takes ... Battaglia, Andrea; Wang, Wen; Saqri, Jonas; Podladchikova, Tatiana; Veronig, Astrid; Collier, Hannah; Dickson, Ewan; Podladchikova, Olena; Monstein, Christian; Warmuth, Alexander; Schuller, Fr\; Harra, Louise; Krucker, Säm; Published by: \aap Published on: feb YEAR: 2023 DOI: 10.1051/0004-6361/202244996 Parker Data Used; Sun: flares; Sun: corona; Sun: X-rays; gamma rays; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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NIRwave: A wave-turbulence-driven solar wind model constrained by PSP observations \ Aims: We generate a model description of the solar wind based on an explicit wave-turbulence-driven heating mechanism, and constrain our model with observational data. \ Methods: We included an explicit coronal heating source term in the general 3D magnetohydrodynamic code NIRVANA to simulate the properties of the solar wind. The adapted heating mechanism is based on the interaction and subsequent dissipation of counter- propagating Alfv\ en waves in the solar corona, accounting for a turbulent heating rate Q$_p$. The sola ... Schleich, S.; Saikia, Boro; Ziegler, U.; Güdel, M.; Bartel, M.; Published by: \aap Published on: apr YEAR: 2023 DOI: 10.1051/0004-6361/202245009 Parker Data Used; magnetohydrodynamics (MHD); Solar wind; Sun: activity; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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Context. Whistler waves are electromagnetic waves produced by electron- driven instabilities, which in turn can reshape the electron distributions via wave-particle interactions. In the solar wind they are one of the main candidates for explaining the scattering of the strahl electron population into the halo at increasing radial distances from the Sun and for subsequently regulating the solar wind heat flux. However, it is unclear what type of instability dominates to drive whistler waves in the solar wind. \ Aims: Our goal ... Froment, C.; Agapitov, O.~V.; Krasnoselskikh, V.; Karbashewski, S.; de Wit, Dudok; Larosa, A.; Colomban, L.; Malaspina, D.; Kretzschmar, M.; Jagarlamudi, V.~K.; Bale, S.~D.; Bonnell, J.~W.; Mozer, F.~S.; Pulupa, M.; Published by: \aap Published on: apr YEAR: 2023 DOI: 10.1051/0004-6361/202245140 Parker Data Used; Sun: heliosphere; Solar wind; waves; plasmas; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
| 2022 |
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Observation of a Magnetic Switchback in the Solar Corona Switchbacks are sudden, large radial deflections of the solar wind magnetic field, widely revealed in interplanetary space by the Parker Solar Probe. The switchbacks formation mechanism and sources are still unresolved, although candidate mechanisms include Alfv\ enic turbulence, shear-driven Kelvin-Helmholtz instabilities, interchange reconnection, and geometrical effects related to the Parker spiral. This Letter presents observations from the Metis coronagraph on board a Solar Orbiter of a single large propagating S-shape ... Telloni, Daniele; Zank, Gary; Stangalini, Marco; Downs, Cooper; Liang, Haoming; Nakanotani, Masaru; Andretta, Vincenzo; Antonucci, Ester; Sorriso-Valvo, Luca; Adhikari, Laxman; Zhao, Lingling; Marino, Raffaele; Susino, Roberto; Grimani, Catia; Fabi, Michele; Amicis, Raffaella; Perrone, Denise; Bruno, Roberto; Carbone, Francesco; Mancuso, Salvatore; Romoli, Marco; Da Deppo, Vania; Fineschi, Silvano; Heinzel, Petr; Moses, John; Naletto, Giampiero; Nicolini, Gianalfredo; Spadaro, Daniele; Teriaca, Luca; Frassati, Federica; Jerse, Giovanna; Landini, Federico; Pancrazzi, Maurizio; Russano, Giuliana; Sasso, Clementina; Biondo, Ruggero; Burtovoi, Aleksandr; Capuano, Giuseppe; Casini, Chiara; Casti, Marta; Chioetto, Paolo; De Leo, Yara; Giarrusso, Marina; Liberatore, Alessandro; Berghmans, David; Auchère, Fr\; Cuadrado, Regina; Chitta, Lakshmi; Harra, Louise; Kraaikamp, Emil; Long, David; Mandal, Sudip; Parenti, Susanna; Pelouze, Gabriel; Peter, Hardi; Rodriguez, Luciano; Schühle, Udo; Schwanitz, Conrad; Smith, Phil; Verbeeck, Cis; Zhukov, Andrei; Published by: \apjl Published on: sep YEAR: 2022 DOI: 10.3847/2041-8213/ac8104 Parker Data Used; Solar corona; Solar magnetic reconnection; Solar magnetic fields; Magnetohydrodynamics; Solar Coronal Waves; Slow solar wind; 1483; 1504; 1503; 1964; 1995; 1873; Astrophysics - Solar and Stellar Astrophysics |
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Observation of a Magnetic Switchback in the Solar Corona Switchbacks are sudden, large radial deflections of the solar wind magnetic field, widely revealed in interplanetary space by the Parker Solar Probe. The switchbacks formation mechanism and sources are still unresolved, although candidate mechanisms include Alfv\ enic turbulence, shear-driven Kelvin-Helmholtz instabilities, interchange reconnection, and geometrical effects related to the Parker spiral. This Letter presents observations from the Metis coronagraph on board a Solar Orbiter of a single large propagating S-shape ... Telloni, Daniele; Zank, Gary; Stangalini, Marco; Downs, Cooper; Liang, Haoming; Nakanotani, Masaru; Andretta, Vincenzo; Antonucci, Ester; Sorriso-Valvo, Luca; Adhikari, Laxman; Zhao, Lingling; Marino, Raffaele; Susino, Roberto; Grimani, Catia; Fabi, Michele; Amicis, Raffaella; Perrone, Denise; Bruno, Roberto; Carbone, Francesco; Mancuso, Salvatore; Romoli, Marco; Da Deppo, Vania; Fineschi, Silvano; Heinzel, Petr; Moses, John; Naletto, Giampiero; Nicolini, Gianalfredo; Spadaro, Daniele; Teriaca, Luca; Frassati, Federica; Jerse, Giovanna; Landini, Federico; Pancrazzi, Maurizio; Russano, Giuliana; Sasso, Clementina; Biondo, Ruggero; Burtovoi, Aleksandr; Capuano, Giuseppe; Casini, Chiara; Casti, Marta; Chioetto, Paolo; De Leo, Yara; Giarrusso, Marina; Liberatore, Alessandro; Berghmans, David; Auchère, Fr\; Cuadrado, Regina; Chitta, Lakshmi; Harra, Louise; Kraaikamp, Emil; Long, David; Mandal, Sudip; Parenti, Susanna; Pelouze, Gabriel; Peter, Hardi; Rodriguez, Luciano; Schühle, Udo; Schwanitz, Conrad; Smith, Phil; Verbeeck, Cis; Zhukov, Andrei; Published by: \apjl Published on: sep YEAR: 2022 DOI: 10.3847/2041-8213/ac8104 Parker Data Used; Solar corona; Solar magnetic reconnection; Solar magnetic fields; Magnetohydrodynamics; Solar Coronal Waves; Slow solar wind; 1483; 1504; 1503; 1964; 1995; 1873; Astrophysics - Solar and Stellar Astrophysics |
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Prior observations of the near-Sun solar wind (sunward of 0.25 au) identified frequent, intense plasma waves near the local electron cyclotron frequency (f $_ce$), and its harmonics. In this Letter, it is shown that near-f $_ce$ wave properties are consistent with generation via interaction between the observing spacecraft s ion wake and the ambient plasma and magnetic fields. This result implies that many observed near-f $_ce$ waves are not intrinsic to the unobstructed solar wind flow, and therefore are unlikely to play a ... Malaspina, David; Tigik, Sabrina; Vaivads, Andris; Published by: \apjl Published on: sep YEAR: 2022 DOI: 10.3847/2041-8213/ac8c8f Parker Data Used; Solar wind; space vehicles; Space plasmas; 1534; 1549; 1544 |
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Wave emissions at frequencies near electron gyrofrequency harmonics are observed at small heliocentric distances below about 40 R $_\ensuremath\odot$ and are known to occur in regions with quiescent magnetic fields. We show the close connection of these waves to the large-scale properties of the magnetic field. Near electron gyrofrequency harmonic emissions occur only when the ambient magnetic field points to a narrow range of directions bounded by polar and azimuthal angular ranges in the RTN coordinate system of correspond ... Tigik, Sabrina; Vaivads, Andris; Malaspina, David; Bale, Stuart; Published by: \apj Published on: sep YEAR: 2022 DOI: 10.3847/1538-4357/ac8473 Parker Data Used; Space plasmas; Plasma physics; Solar wind; 1544; 2089; 1534; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics |
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Modeling of Joint Parker Solar Probe-Metis/Solar Orbiter Observations We present the first theoretical modeling of joint Parker Solar Probe (PSP)-Metis/Solar Orbiter (SolO) quadrature observations. The combined observations describe the evolution of a slow solar wind plasma parcel from the extended solar corona (3.5-6.3 R $_\ensuremath\odot$) to the very inner heliosphere (23.2 R $_\ensuremath\odot$). The Metis/SolO instrument remotely measures the solar wind speed finding a range from 96 to 201 km s$^-1$, and PSP measures the solar wind plasma in situ, observing a radial speed of 219.34 km s$ ... Adhikari, L.; Zank, G.~P.; Telloni, D.; Zhao, L.; Published by: \apjl Published on: oct YEAR: 2022 DOI: 10.3847/2041-8213/ac91c6 Parker Data Used; The Sun; Solar wind; interplanetary turbulence; 1693; 1534; 830; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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Exact laws for evaluating cascade rates, tracing back to the Kolmogorov 4/5 law, have been extended to many systems of interest including magnetohydrodynamics (MHD), and compressible flows of the magnetofluid and ordinary fluid types. It is understood that implementations may be limited by the quantity of available data and by the lack of turbulence symmetry. Assessment of the accuracy and feasibility of such third-order (or Yaglom) relations is most effectively accomplished by examining the von K\ arm\ an-Howarth equati ... Wang, Yanwen; Chhiber, Rohit; Adhikari, Subash; Yang, Yan; Bandyopadhyay, Riddhi; Shay, Michael; Oughton, Sean; Matthaeus, William; Cuesta, Manuel; Published by: \apj Published on: oct YEAR: 2022 DOI: 10.3847/1538-4357/ac8f90 Parker Data Used; interplanetary turbulence; Space plasmas; Plasma physics; Magnetohydrodynamics; Magnetohydrodynamical simulations; 830; 1544; 2089; 1964; 1966; Physics - Space Physics; Physics - Fluid Dynamics; Physics - Plasma Physics |
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Observation and Modeling of the Solar Wind Turbulence Evolution in the Sub-Mercury Inner Heliosphere Telloni, Daniele; Adhikari, Laxman; Zank, Gary; Hadid, Lina; anchez-Cano, Beatriz; Sorriso-Valvo, Luca; Zhao, Lingling; Panasenco, Olga; Shi, Chen; Velli, Marco; Susino, Roberto; Verscharen, Daniel; Milillo, Anna; Alberti, Tommaso; Narita, Yasuhito; Verdini, Andrea; Grimani, Catia; Bruno, Roberto; Amicis, Raffaella; Perrone, Denise; Marino, Raffaele; Carbone, Francesco; Califano, Francesco; Malara, Francesco; Stawarz, Julia; Laker, Ronan; Liberatore, Alessandro; Bale, Stuart; Kasper, Justin; Heyner, Daniel; de Wit, Thierry; Goetz, Keith; Harvey, Peter; MacDowall, Robert; Malaspina, David; Pulupa, Marc; Case, Anthony; Korreck, Kelly; Larson, Davin; Livi, Roberto; Stevens, Michael; Whittlesey, Phyllis; Auster, Hans-Ulrich; Richter, Ingo; Published by: \apjl Published on: oct YEAR: 2022 DOI: 10.3847/2041-8213/ac9624 Parker Data Used; Magnetohydrodynamics; Alfven waves; Space plasmas; interplanetary turbulence; Heliosphere; Solar wind; 1964; 23; 1544; 830; 711; 1534 |
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2D and Slab Turbulent Cascade Rates in the Inner Heliosphere Adhikari, L.; Zank, G.~P.; Zhao, L.; Telloni, D.; Published by: \apj Published on: oct YEAR: 2022 DOI: 10.3847/1538-4357/ac9234 Parker Data Used; The Sun; interplanetary turbulence; Heliosphere; 1693; 830; 711 |
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Langmuir-Slow Extraordinary Mode Magnetic Signature Observations with Parker Solar Probe Radio emission from interplanetary shocks, planetary foreshocks, and some solar flares occurs in the so-called plasma emission framework. The generally accepted scenario begins with electrostatic Langmuir waves that are driven by a suprathermal electron beam on the Landau resonance. These Langmuir waves then mode-convert to freely propagating electromagnetic emissions at the local plasma frequency f $_ pe $ and/or its harmonic 2f $_ pe $. However, the details of the physics of mode conversion are unclear, and so far the ... Larosa, A.; de Wit, Dudok; Krasnoselskikh, V.; Bale, S.~D.; Agapitov, O.; Bonnell, J.; Froment, C.; Goetz, K.; Harvey, P.; Halekas, J.; Kretzschmar, M.; MacDowall, R.; Malaspina, David; Moncuquet, M.; Niehof, J.; Pulupa, M.; Revillet, C.; Published by: \apj Published on: mar YEAR: 2022 DOI: 10.3847/1538-4357/ac4e85 Parker Data Used; Solar wind; Plasma physics; Space plasmas; 1534; 2089; 1544 |
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We examine the radial evolution of correlation lengths perpendicular ( $\lambda _C^\perp $ ) and parallel ( $\lambda _C^\parallel $ ) to the magnetic-field direction, computed from solar wind magnetic-field data measured by Parker Solar Probe (PSP) during its first eight orbits, Helios 1, Advanced Composition Explorer (ACE), WIND, and Voyager 1 spacecraft. Correlation lengths are grouped by an interval s alignment angle; the angle between the magnetic-field and solar wind velocity vectors (\ensuremath\Theta$_BV$). Parallel a ... Cuesta, Manuel; Chhiber, Rohit; Roy, Sohom; Goodwill, Joshua; Pecora, Francesco; Jarosik, Jake; Matthaeus, William; Parashar, Tulasi; Bandyopadhyay, Riddhi; Published by: \apjl Published on: jun YEAR: 2022 DOI: 10.3847/2041-8213/ac73fd Parker Data Used; Two-point correlation function; Heliosphere; Solar wind; interplanetary turbulence; 1951; 711; 1534; 830; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics |
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MHD Turbulent Power Anisotropy in the Inner Heliosphere We study anisotropic magnetohydrodynamic (MHD) turbulence in the slow solar wind measured by Parker Solar Probe (PSP) and Solar Orbiter (SolO) during its first orbit from the perspective of variance anisotropy and correlation anisotropy. We use the Belcher \& Davis approach (M1) and a new method (M2) that decomposes a fluctuating vector into parallel and perpendicular fluctuating vectors. M1 and M2 calculate the transverse and parallel turbulence components relative to the mean magnetic field direction. The parallel turbulen ... Adhikari, L.; Zank, G.~P.; Zhao, L.; Telloni, D.; Published by: \apj Published on: jul YEAR: 2022 DOI: 10.3847/1538-4357/ac70cb Parker Data Used; interplanetary turbulence; Slow solar wind; Solar wind; 830; 1873; 1534 |
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Inertial-range Magnetic-fluctuation Anisotropy Observed from Parker Solar Probe s First Seven Orbits Solar wind turbulence is anisotropic with respect to the mean magnetic field. Anisotropy leads to ambiguity when interpreting in situ turbulence observations in the solar wind because an apparent change in the measurements could be due to either the change of intrinsic turbulence properties or to a simple change of the spacecraft sampling direction. We demonstrate the ambiguity using the spectral index and magnetic compressibility in the inertial range observed by the Parker Solar Probe during its first seven orbits ranging ... Zhao, L.; Zank, G.~P.; Adhikari, L.; Nakanotani, M.; Published by: \apjl Published on: jan YEAR: 2022 DOI: 10.3847/2041-8213/ac4415 Parker Data Used; 1534; 830; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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A Study of an Equatorial Coronal Hole Observed at the First Parker Solar Probe Perihelion In this study, we present an observational analysis of a coronal hole (CH) observed on 2018 November 1 and solar wind (SW) that originated from it, using the Solar Dynamics Observatory, the Parker Solar Probe (PSP) observations at 68 solar radii, ACE and WIND data at 1 au, and interplanetary scintillation (IPS) observations from 0.2 to 1 au. The CH-originated SW stream was observed by L1 on 2018 November 4 and by PSP on 2018 November 15. We examined the CH for nine Carrington Rotations (CR) and find that the SW stream to rea ... Karna, Nishu; Berger, Mitchell; Asgari-Targhi, Mahboubeh; Paulson, Kristoff; Fujiki, Ken; Published by: \apj Published on: jan YEAR: 2022 DOI: 10.3847/1538-4357/ac3c46 |
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Improving the Alfv\ en Wave Solar Atmosphere Model Based on Parker Solar Probe Data In van der Holst et al. (2019), we modeled the solar corona and inner heliosphere of the first encounter of NASA s Parker Solar Probe (PSP) using the Alfv\ en Wave Solar atmosphere Model (AWSoM) with Air Force Data Assimilative Photospheric flux Transport- Global Oscillation Network Group magnetograms, and made predictions of the state of the solar wind plasma for the first encounter. AWSoM uses low-frequency Alfv\ en wave turbulence to address the coronal heating and acceleration. Here, we revise our simulations, by introdu ... van der Holst, B.; Huang, J.; Sachdeva, N.; Kasper, J.~C.; Manchester, W.~B.; Borovikov, D.; Chandran, B.~D.~G.; Case, A.~W.; Korreck, K.~E.; Larson, D.; Livi, R.; Stevens, M.; Whittlesey, P.; Bale, S.~D.; Pulupa, M.; Malaspina, D.~M.; Bonnell, J.~W.; Harvey, P.~R.; Goetz, K.; MacDowall, R.~J.; Published by: \apj Published on: feb YEAR: 2022 DOI: 10.3847/1538-4357/ac3d34 |
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Turbulence in the Sub-Alfv\ enic Solar Wind The Parker Solar Probe (PSP) entered a region of sub-Alfv\ enic solar wind during encounter 8, and we present the first detailed analysis of low-frequency turbulence properties in this novel region. The magnetic field and flow velocity vectors were highly aligned during this interval. By constructing spectrograms of the normalized magnetic helicity, cross-helicity, and residual energy, we find that PSP observed primarily Alfv\ enic fluctuations, a consequence of the highly field-aligned flow that renders quasi-2D fluctuation ... Zank, G.~P.; Zhao, L.; Adhikari, L.; Telloni, D.; Kasper, J.~C.; Stevens, M.; Rahmati, A.; Bale, S.~D.; Published by: \apjl Published on: feb YEAR: 2022 DOI: 10.3847/2041-8213/ac51da |
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Using ion measurements from Ultra-Low-Energy Isotope Spectrometer observations on board Advanced Composition Explorer and Solar Isotope Spectrometer observations on board the Solar Terrestrial Observatory (STEREO)-A and STEREO-B spacecraft, we have identified 854 $^3$He-rich time periods between 1997 September and 2021 March. We include all event types with observed $^3$He enhancements such as corotating interaction regions, gradual solar energetic particle (SEP) events, interplanetary shocks, and impulsive SEP events. We em ... Hart, S.~T.; Dayeh, M.~A.; ik, Bu\vc\; Desai, M.~I.; Ebert, R.~W.; Ho, G.~C.; Li, G.; Mason, G.~M.; Published by: \apjs Published on: dec YEAR: 2022 DOI: 10.3847/1538-4365/ac91c1 Parker Data Used; Active sun; Solar energetic particles; Active Solar Corona; Solar atmosphere; Solar abundances; Heliosphere; Solar observatories; 18; 1491; 1988; 1477; 1474; 711; 1513; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics |
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ICARUS: in-situ studies of the solar corona beyond Parker Solar Probe and Solar Orbiter The primary scientific goal of ICARUS (Investigation of Coronal AcceleRation and heating of solar wind Up to the Sun), a mother- daughter satellite mission, proposed in response to the ESA Voyage 2050 Call, will be to determine how the magnetic field and plasma dynamics in the outer solar atmosphere give rise to the corona, the solar wind, and the entire heliosphere. Reaching this goal will be a Rosetta Stone step, with results that are broadly applicable within the fields of space plasma physics and astrophysics. Within ... Krasnoselskikh, Vladimir; Tsurutani, Bruce; de Wit, Thierry; Walker, Simon; Balikhin, Michael; Balat-Pichelin, Marianne; Velli, Marco; Bale, Stuart; Maksimovic, Milan; Agapitov, Oleksiy; Baumjohann, Wolfgang; Berthomier, Matthieu; Bruno, Roberto; Cranmer, Steven; De Pontieu, Bart; Meneses, Domingos; Eastwood, Jonathan; Erdélyi, Robertus; Ergun, Robert; Fedun, Viktor; Ganushkina, Natalia; Greco, Antonella; Harra, Louise; Henri, Pierre; Horbury, Timothy; Hudson, Hugh; Kasper, Justin; Khotyaintsev, Yuri; Kretzschmar, Matthieu; Krucker, Säm; Kucharek, Harald; Langevin, Yves; Lavraud, Beno\^\it; Lebreton, Jean-Pierre; Lepri, Susan; Liemohn, Michael; Louarn, Philippe; Moebius, Eberhard; Mozer, Forrest; Němeček, Zdeněk; Panasenco, Olga; Retino, Alessandro; Safrankova, Jana; Scudder, Jack; Servidio, Sergio; Sorriso-Valvo, Luca; Sou\vcek, Jan; Szabo, Adam; Vaivads, Andris; Vekstein, Grigory; Vörös, Zoltan; Zaqarashvili, Teimuraz; Zimbardo, Gaetano; Fedorov, Andrei; Published by: Experimental Astronomy Published on: dec YEAR: 2022 DOI: 10.1007/s10686-022-09878-1 Parker Data Used; Solar wind; Heliophysics; Solar atmosphere; Space mission |
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ICARUS: in-situ studies of the solar corona beyond Parker Solar Probe and Solar Orbiter The primary scientific goal of ICARUS (Investigation of Coronal AcceleRation and heating of solar wind Up to the Sun), a mother- daughter satellite mission, proposed in response to the ESA Voyage 2050 Call, will be to determine how the magnetic field and plasma dynamics in the outer solar atmosphere give rise to the corona, the solar wind, and the entire heliosphere. Reaching this goal will be a Rosetta Stone step, with results that are broadly applicable within the fields of space plasma physics and astrophysics. Within ... Krasnoselskikh, Vladimir; Tsurutani, Bruce; de Wit, Thierry; Walker, Simon; Balikhin, Michael; Balat-Pichelin, Marianne; Velli, Marco; Bale, Stuart; Maksimovic, Milan; Agapitov, Oleksiy; Baumjohann, Wolfgang; Berthomier, Matthieu; Bruno, Roberto; Cranmer, Steven; De Pontieu, Bart; Meneses, Domingos; Eastwood, Jonathan; Erdélyi, Robertus; Ergun, Robert; Fedun, Viktor; Ganushkina, Natalia; Greco, Antonella; Harra, Louise; Henri, Pierre; Horbury, Timothy; Hudson, Hugh; Kasper, Justin; Khotyaintsev, Yuri; Kretzschmar, Matthieu; Krucker, Säm; Kucharek, Harald; Langevin, Yves; Lavraud, Beno\^\it; Lebreton, Jean-Pierre; Lepri, Susan; Liemohn, Michael; Louarn, Philippe; Moebius, Eberhard; Mozer, Forrest; Němeček, Zdeněk; Panasenco, Olga; Retino, Alessandro; Safrankova, Jana; Scudder, Jack; Servidio, Sergio; Sorriso-Valvo, Luca; Sou\vcek, Jan; Szabo, Adam; Vaivads, Andris; Vekstein, Grigory; Vörös, Zoltan; Zaqarashvili, Teimuraz; Zimbardo, Gaetano; Fedorov, Andrei; Published by: Experimental Astronomy Published on: dec YEAR: 2022 DOI: 10.1007/s10686-022-09878-1 Parker Data Used; Solar wind; Heliophysics; Solar atmosphere; Space mission |
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The solar wind measured in situ by Parker Solar Probe in the very inner heliosphere is studied in combination with the remote-sensing observation of the coronal source region provided by the METIS coronagraph aboard Solar Orbiter. The coronal outflows observed near the ecliptic by Metis on 2021 January 17 at 16:30 UT, between 3.5 and 6.3 R $_\ensuremath\odot$ above the eastern solar limb, can be associated with the streams sampled by PSP at 0.11 and 0.26 au from the Sun, in two time intervals almost 5 days apart. The two pla ... Telloni, Daniele; Zank, Gary; Sorriso-Valvo, Luca; Amicis, Raffaella; Panasenco, Olga; Susino, Roberto; Bruno, Roberto; Perrone, Denise; Adhikari, Laxman; Liang, Haoming; Nakanotani, Masaru; Zhao, Lingling; Hadid, Lina; anchez-Cano, Beatriz; Verscharen, Daniel; Velli, Marco; Grimani, Catia; Marino, Raffaele; Carbone, Francesco; Mancuso, Salvatore; Biondo, Ruggero; Pagano, Paolo; Reale, Fabio; Bale, Stuart; Kasper, Justin; Case, Anthony; de Wit, Thierry; Goetz, Keith; Harvey, Peter; Korreck, Kelly; Larson, Davin; Livi, Roberto; MacDowall, Robert; Malaspina, David; Pulupa, Marc; Stevens, Michael; Whittlesey, Phyllis; Romoli, Marco; Andretta, Vincenzo; Da Deppo, Vania; Fineschi, Silvano; Heinzel, Petr; Moses, John; Naletto, Giampiero; Nicolini, Gianalfredo; Spadaro, Daniele; Stangalini, Marco; Teriaca, Luca; Capobianco, Gerardo; Capuano, Giuseppe; Casini, Chiara; Casti, Marta; Chioetto, Paolo; Corso, Alain; De Leo, Yara; Fabi, Michele; Frassati, Federica; Frassetto, Fabio; Giordano, Silvio; Guglielmino, Salvo; Jerse, Giovanna; Landini, Federico; Liberatore, Alessandro; Magli, Enrico; Massone, Giuseppe; Messerotti, Mauro; Pancrazzi, Maurizio; Pelizzo, Maria; Romano, Paolo; Sasso, Clementina; Schühle, Udo; Slemer, Alessandra; Straus, Thomas; Uslenghi, Michela; Volpicelli, Cosimo; Zangrilli, Luca; Zuppella, Paola; Abbo, Lucia; Auchère, Fr\; Cuadrado, Regina; Berlicki, Arkadiusz; Ciaravella, Angela; Lamy, Philippe; Lanzafame, Alessandro; Malvezzi, Marco; Nicolosi, Piergiorgio; o, Giuseppe; Peter, Hardi; Solanki, Sami; Strachan, Leonard; Tsinganos, Kanaris; Ventura, Rita; Vial, Jean-Claude; Woch, Joachim; Zimbardo, Gaetano; Published by: \apj Published on: aug YEAR: 2022 DOI: 10.3847/1538-4357/ac8103 Parker Data Used; H II regions; Alfven waves; Space plasmas; interplanetary turbulence; Solar corona; Heliosphere; Solar wind; 694; 23; 1544; 830; 1483; 711; 1534 |
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During its 10th orbit around the Sun, the Parker Solar Probe sampled two intervals where the local Alfv\ en speed exceeded the solar wind speed, lasting more than 10 hours in total. In this paper, we analyze the turbulence and wave properties during these periods. The turbulence is observed to be Alfv\ enic and unbalanced, dominated by outward-propagating modes. The power spectrum of the outward-propagating Elsässer z $^+$ mode steepens at high frequencies while that of the inward- propagating z $^-$ mode flattens. The obse ... Zhao, L.; Zank, G.~P.; Adhikari, L.; Telloni, D.; Stevens, M.; Kasper, J.~C.; Bale, S.~D.; Raouafi, N.~E.; Published by: \apjl Published on: aug YEAR: 2022 DOI: 10.3847/2041-8213/ac8353 Parker Data Used; Solar Coronal Waves; interplanetary turbulence; Solar wind; 1995; 830; 1534 |
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First Results From the SCM Search-Coil Magnetometer on Parker Solar Probe Parker Solar Probe is the first mission to probe in situ the innermost heliosphere, revealing an exceptionally dynamic and structured outer solar corona. Its payload includes a search-coil magnetometer (SCM) that measures up to three components of the fluctuating magnetic field between 3 Hz and 1 MHz. After more than 3 years of operation, the SCM has revealed a multitude of different wave phenomena in the solar wind. Here we present an overview of some of the discoveries made so far. These include oblique and sunward propaga ... de Wit, Dudok; Krasnoselskikh, V.~V.; Agapitov, O.; Froment, C.; Larosa, A.; Bale, S.~D.; Bowen, T.; Goetz, K.; Harvey, P.; Jannet, G.; Kretzschmar, M.; MacDowall, R.~J.; Malaspina, D.; Martin, P.; Page, B.; Pulupa, M.; Revillet, C.; Published by: Journal of Geophysical Research (Space Physics) Published on: apr YEAR: 2022 DOI: 10.1029/2021JA030018 Parker Data Used; Solar wind; magnetic field; search-coil; plasma waves |
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This paper reports the first possible evidence for the development of the Kelvin-Helmholtz (KH) instability at the border of coronal holes separating the associated fast wind from the slower wind originating from adjacent streamer regions. Based on a statistical data set of spectroscopic measurements of the UV corona acquired with the UltraViolet Coronagraph Spectrometer on board the SOlar and Heliospheric Observatory during the minimum activity of solar cycle 22, high temperature-velocity correlations are found along the fa ... Telloni, Daniele; Adhikari, Laxman; Zank, Gary; Zhao, Lingling; Sorriso-Valvo, Luca; Antonucci, Ester; Giordano, Silvio; Mancuso, Salvatore; Published by: \apj Published on: apr YEAR: 2022 DOI: 10.3847/1538-4357/ac5cc3 Parker Data Used; Magnetohydrodynamics; Theoretical models; Time series analysis; Solar corona; Solar coronal heating; Solar coronal holes; Solar coronal streamers; Solar oscillations; Solar ultraviolet emission; 1964; 2107; 1916; 1483; 1989; 1484; 1486; 1515; 1533 |
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On the Conservation of Turbulence Energy in Turbulence Transport Models Zank et al. developed models describing the transport of low-frequency incompressible and nearly incompressible turbulence in inhomogeneous flows. The formalism was based on expressing the fluctuating variables in terms of the Elsässar variables and then taking moments subject to various closure hypotheses. The turbulence transport models are different according to whether the plasma beta regime is large, of order unity, or small. Here, we show explicitly that the three sets of turbulence transport models admit a conser ... Wang, B.; Zank, G.~P.; Adhikari, L.; Zhao, L.; Published by: \apj Published on: apr YEAR: 2022 DOI: 10.3847/1538-4357/ac596e Parker Data Used; Magnetohydrodynamics; interplanetary turbulence; 1964; 830; Physics - Plasma Physics; Astrophysics - High Energy Astrophysical Phenomena; Astrophysics - Solar and Stellar Astrophysics; Physics - Fluid Dynamics |
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Context. On 2020 November 29, an eruptive event occurred in an active region located behind the eastern solar limb as seen from Earth. The event consisted of an M4.4 class flare, a coronal mass ejection, an extreme ultraviolet (EUV) wave, and a white-light (WL) shock wave. The eruption gave rise to the first widespread solar energetic particle (SEP) event of solar cycle 25, which was observed at four widely separated heliospheric locations (\ensuremath\sim230\textdegree). \ Aims: Our aim is to better understand the source of ... Kouloumvakos, A.; Kwon, R.~Y.; ia, Rodr\; Lario, D.; Dresing, N.; Kilpua, E.~K.~J.; Vainio, R.; Török, T.; Plotnikov, I.; Rouillard, A.~P.; Downs, C.; Linker, J.~A.; Malandraki, O.~E.; Pinto, R.~F.; Riley, P.; Allen, R.~C.; Published by: \aap Published on: apr YEAR: 2022 DOI: 10.1051/0004-6361/202142515 Parker Data Used; Sun: general; Sun: particle emission; Sun: coronal mass ejections (CMEs); shock waves |
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Icarus: In-situ monitoring of the surface degradation on a near-Sun asteroid Icarus is a mission concept designed to record the activity of an asteroid during a close encounter with the Sun. The primary science goal of the mission is to unravel the nontrivial mechanism(s) that destroy asteroids on orbits with small perihelion distances. Understanding the destruction mechanism(s) allows us to constrain the bulk composition and interior structure of asteroids in general. The Icarus mission does not only aim to achieve its science goals but also functions as a technical demonstration of what a low-cost ... Lehtinen, Tuomas; Granvik, Mikael; Bellome, Andrea; anchez, Joan-Pau; Published by: Acta Astronautica Published on: sep YEAR: 2021 DOI: 10.1016/j.actaastro.2021.05.028 |
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Computer-assisted tomography (CAT) for interplanetary scintillation (IPS) observations enables the determination of the global distribution of solar wind speed. We compared solar wind speeds derived from the CAT analysis of IPS observations between 1985 and 2019 with in situ observations conducted by the near-Earth and Ulysses spacecraft. From this comparison, we found that solar wind speeds from the IPS observations for 2009-2019 were systematically higher than the in situ observations, whereas those for the period until 20 ... Tokumaru, Munetoshi; Fujiki, Ken; Kojima, Masayoshi; Iwai, Kazumasa; Published by: \apj Published on: nov YEAR: 2021 DOI: 10.3847/1538-4357/ac1862 Parker Data Used; 1503; 1534; 828; 1487 |
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MHD and Ion Kinetic Waves in Field-aligned Flows Observed by Parker Solar Probe Parker Solar Probe (PSP) observed predominately Alfv\ enic fluctuations in the solar wind near the Sun where the magnetic field tends to be radially aligned. In this paper, two magnetic- field-aligned solar wind flow intervals during PSP s first two orbits are analyzed. Observations of these intervals indicate strong signatures of parallel/antiparallel-propagating waves. We utilize multiple analysis techniques to extract the properties of the observed waves in both magnetohydrodynamic (MHD) and kinetic scales. At the MHD sca ... Zhao, L.; Zank, G.~P.; He, J.~S.; Telloni, D.; Adhikari, L.; Nakanotani, M.; Kasper, J.~C.; Bale, S.~D.; Published by: \apj Published on: dec YEAR: 2021 DOI: 10.3847/1538-4357/ac28fb Parker Data Used; 1534; 23; 830; 824 |
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\ Aims: Solar Orbiter (SolO) was launched on February 9, 2020, allowing us to study the nature of turbulence in the inner heliopshere. We investigate the evolution of anisotropic turbulence in the fast and slow solar wind in the inner heliosphere using the nearly incompressible magnetohydrodynamic (NI MHD) turbulence model and SolO measurements. \ Methods: We calculated the two dimensional (2D) and the slab variances of the energy in forward and backward propagating modes, the fluctuating magnetic energy, the fluctuating kin ... Adhikari, L.; Zank, G.~P.; Zhao, L.; Telloni, D.; Horbury, T.~S.; Brien, H.; Evans, V.; Angelini, V.; Owen, C.~J.; Louarn, P.; Fedorov, A.; Published by: \aap Published on: dec YEAR: 2021 DOI: 10.1051/0004-6361/202140672 |
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Context. Solar Orbiter, the new-generation mission dedicated to solar and heliospheric exploration, was successfully launched on February 10, 2020, 04:03 UTC from Cape Canaveral. During its first perihelion passage in June 2020, two successive interplanetary coronal mass ejections (ICMEs), propagating along the heliospheric current sheet (HCS), impacted the spacecraft. \ Aims: This paper addresses the investigation of the ICMEs encountered by Solar Orbiter on June 7\ensuremath-8, 2020, from both an observational and a modeli ... Telloni, D.; Scolini, C.; Möstl, C.; Zank, G.~P.; Zhao, L.; Weiss, A.~J.; Reiss, M.~A.; Laker, R.; Perrone, D.; Khotyaintsev, Y.; Steinvall, K.; Sorriso-Valvo, L.; Horbury, T.~S.; Wimmer-Schweingruber, R.~F.; Bruno, R.; Amicis, R.; De Marco, R.; Jagarlamudi, V.~K.; Carbone, F.; Marino, R.; Stangalini, M.; Nakanotani, M.; Adhikari, L.; Liang, H.; Woodham, L.~D.; Davies, E.~E.; Hietala, H.; Perri, S.; omez-Herrero, R.; iguez-Pacheco, Rodr\; Antonucci, E.; Romoli, M.; Fineschi, S.; Maksimovic, M.; Sou\vcek, J.; Chust, T.; Kretzschmar, M.; Vecchio, A.; Müller, D.; Zouganelis, I.; Winslow, R.~M.; Giordano, S.; Mancuso, S.; Susino, R.; Ivanovski, S.~L.; Messerotti, M.; Brien, H.; Evans, V.; Angelini, V.; Published by: \aap Published on: dec YEAR: 2021 DOI: 10.1051/0004-6361/202140648 Parker Data Used; magnetohydrodynamics (MHD); Sun: coronal mass ejections (CMEs); Sun: evolution; Sun: heliosphere; Solar wind; solar-terrestrial relations |
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The first widespread solar energetic particle event observed by Solar Orbiter on 2020 November 29 Context. On 2020 November 29, the first widespread solar energetic particle (SEP) event of solar cycle 25 was observed at four widely separated locations in the inner (\ensuremath\lesssim1 AU) heliosphere. Relativistic electrons as well as protons with energies > 50 MeV were observed by Solar Orbiter (SolO), Parker Solar Probe, the Solar Terrestrial Relations Observatory (STEREO)-A and multiple near- Earth spacecraft. The SEP event was associated with an M4.4 class X-ray flare and accompanied by a coronal mass ejection and a ... Kollhoff, A.; Kouloumvakos, A.; Lario, D.; Dresing, N.; omez-Herrero, R.; ia, Rodr\; Malandraki, O.~E.; Richardson, I.~G.; Posner, A.; Klein, K.; Pacheco, D.; Klassen, A.; Heber, B.; Cohen, C.~M.~S.; Laitinen, T.; Cernuda, I.; Dalla, S.; Lara, Espinosa; Vainio, R.; Köberle, M.; Kühl, R.; Xu, Z.~G.; Berger, L.; Eldrum, S.; Brüdern, M.; Laurenza, M.; Kilpua, E.~J.; Aran, A.; Rouillard, A.~P.; ik, Bu\vc\; Wijsen, N.; Pomoell, J.; Wimmer-Schweingruber, R.~F.; Martin, C.; Böttcher, S.~I.; von Forstner, J.~L.; Terasa, J.; Boden, S.; Kulkarni, S.~R.; Ravanbakhsh, A.; Yedla, M.; Janitzek, N.; iguez-Pacheco, Rodr\; Mateo, Prieto; Prieto, S.; Espada, Parra; Polo, Rodr\; in, Mart\; Carcaboso, F.; Mason, G.~M.; Ho, G.~C.; Allen, R.~C.; Andrews, Bruce; Schlemm, C.~E.; Seifert, H.; Tyagi, K.; Lees, W.~J.; Hayes, J.; Bale, S.~D.; Krupar, V.; Horbury, T.~S.; Angelini, V.; Evans, V.; Brien, H.; Maksimovic, M.; Khotyaintsev, Yu.; Vecchio, A.; Steinvall, K.; Asvestari, E.; Published by: \aap Published on: dec YEAR: 2021 DOI: 10.1051/0004-6361/202140937 Parker Data Used; Sun: particle emission; Sun: heliosphere; Sun: coronal mass ejections (CMEs); Sun: flares; Interplanetary medium |
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Context. Solar Orbiter was launched on 10 February 2020 with the purpose of investigating solar and heliospheric physics using a payload of instruments designed for both remote and in situ studies. Similar to the recently launched Parker Solar Probe, and unlike earlier missions, Solar Orbiter carries instruments designed to measure low-frequency DC electric fields. \ Aims: In this paper, we assess the quality of the low-frequency DC electric field measured by the Radio and Plasma Waves instrument (RPW) on Solar Orbiter. In p ... Steinvall, K.; Khotyaintsev, Yu.; Cozzani, G.; Vaivads, A.; Yordanova, E.; Eriksson, A.~I.; Edberg, N.~J.~T.; Maksimovic, M.; Bale, S.~D.; Chust, T.; Krasnoselskikh, V.; Kretzschmar, M.; Lorfèvre, E.; Plettemeier, D.; Sou\vcek, J.; Steller, M.; ak, \vS.; Vecchio, A.; Horbury, T.~S.; Brien, H.; Evans, V.; Fedorov, A.; Louarn, P.; enot, V.; e, Andr\; Lavraud, B.; Rouillard, A.~P.; Owen, C.~J.; Published by: \aap Published on: dec YEAR: 2021 DOI: 10.1051/0004-6361/202140855 Parker Data Used; Solar wind; plasmas; magnetic reconnection; methods: data analysis; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics |
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Context. Solar Orbiter was launched on 10 February 2020 with the purpose of investigating solar and heliospheric physics using a payload of instruments designed for both remote and in situ studies. Similar to the recently launched Parker Solar Probe, and unlike earlier missions, Solar Orbiter carries instruments designed to measure low-frequency DC electric fields. \ Aims: In this paper, we assess the quality of the low-frequency DC electric field measured by the Radio and Plasma Waves instrument (RPW) on Solar Orbiter. In p ... Steinvall, K.; Khotyaintsev, Yu.; Cozzani, G.; Vaivads, A.; Yordanova, E.; Eriksson, A.~I.; Edberg, N.~J.~T.; Maksimovic, M.; Bale, S.~D.; Chust, T.; Krasnoselskikh, V.; Kretzschmar, M.; Lorfèvre, E.; Plettemeier, D.; Sou\vcek, J.; Steller, M.; ak, \vS.; Vecchio, A.; Horbury, T.~S.; Brien, H.; Evans, V.; Fedorov, A.; Louarn, P.; enot, V.; e, Andr\; Lavraud, B.; Rouillard, A.~P.; Owen, C.~J.; Published by: \aap Published on: dec YEAR: 2021 DOI: 10.1051/0004-6361/202140855 Parker Data Used; Solar wind; plasmas; magnetic reconnection; methods: data analysis; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics |
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Turbulence transport in the solar corona: Theory, modeling, and Parker Solar Probe A primary goal of the Parker Solar Probe (PSP) Mission is to answer the outstanding question of how the solar corona plasma is heated to the high temperatures needed for the acceleration of the solar wind. Various heating mechanisms have been suggested, but one that is gaining increasing credence is associated with the dissipation of low frequency magnetohyrodynamic (MHD) turbulence. However, the MHD turbulence models come in several flavors: one in which outwardly propagating Alfv\ en waves experience reflection from the la ... Zank, G.~P.; Zhao, L.; Adhikari, L.; Telloni, D.; Kasper, J.~C.; Bale, S.~D.; Published by: Physics of Plasmas Published on: aug YEAR: 2021 DOI: 10.1063/5.0055692 |
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Flux Ropes, Turbulence, and Collisionless Perpendicular Shock Waves: High Plasma Beta Case With the onset of solar maximum and the expected increased prevalence of interplanetary shock waves, Parker Solar Probe is likely to observe numerous shocks in the next few years. An outstanding question that has received surprisingly little attention has been how turbulence interacts with collisionless shock waves. Turbulence in the supersonic solar wind is described frequently as a superposition of a majority 2D and a minority slab component. We formulate a collisional perpendicular shock-turbulence transmission problem in ... Zank, G.; Nakanotani, M.; Zhao, L.; Du, S.; Adhikari, L.; Che, H.; le Roux, J.; Published by: The Astrophysical Journal Published on: 06/2021 YEAR: 2021 DOI: 10.3847/1538-4357/abf7c8 Interplanetary shocks; interplanetary turbulence; 829; 830; Parker Data Used |
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Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters Context. Zhao, L.; Zank, G.; Hu, Q.; Telloni, D.; Chen, Y.; Adhikari, L.; Nakanotani, M.; Kasper, J.; Huang, J.; Bale, S.; Korreck, K.; Case, A.; Stevens, M.; Bonnell, J.; de Wit, Dudok; Goetz, K.; Harvey, P.; MacDowall, R.; Malaspina, D.; Pulupa, M.; Larson, D.; Livi, R.; Whittlesey, P.; Klein, K.; Raouafi, N.; Published by: Astronomy and Astrophysics Published on: 06/2021 YEAR: 2021 DOI: 10.1051/0004-6361/202039298 Solar wind; Sun: magnetic fields; turbulence; methods: observational; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics; Parker Data Used |
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Jagarlamudi, V.; de Wit, Dudok; Froment, C.; Krasnoselskikh, V.; Larosa, A.; Bercic, L.; Agapitov, O.; Halekas, J.; Kretzschmar, M.; Malaspina, D.; Moncuquet, M.; Bale, S.; Case, A.; Kasper, J.; Korreck, K.; Larson, D.; Pulupa, M.; Stevens, M.; Whittlesey, P.; Published by: Astronomy and Astrophysics Published on: 06/2021 YEAR: 2021 DOI: 10.1051/0004-6361/202039808 waves; scattering; plasmas; Sun: heliosphere; magnetic fields; Physics - Space Physics; Parker Data Used |
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Context. The first encounters of Parker Solar Probe (PSP) with the Sun revealed the presence of ubiquitous localised magnetic deflections in the inner heliosphere; these structures, often called switchbacks, are particularly striking in solar wind streams originating from coronal holes. Froment, C.; Krasnoselskikh, V.; de Wit, Dudok; Agapitov, O.; Fargette, N.; Lavraud, B.; Larosa, A.; Kretzschmar, M.; Jagarlamudi, V.; Velli, M.; Malaspina, D.; Whittlesey, P.; Bale, S.; Case, A.; Goetz, K.; Kasper, J.; Korreck, K.; Larson, D.; MacDowall, R.; Mozer, F.; Pulupa, M.; Revillet, C.; Stevens, M.; Published by: Astronomy and Astrophysics Published on: 06/2021 YEAR: 2021 DOI: 10.1051/0004-6361/202039806 Sun: heliosphere; Solar wind; magnetic fields; magnetic reconnection; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics; Parker Data Used |
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Switchbacks: statistical properties and deviations from Alfvénicity Context. Parker Solar Probe s first solar encounter has revealed the presence of sudden magnetic field deflections in the slow Alfvénic solar wind. These structures, which are often called switchbacks, are associated with proton velocity enhancements. Larosa, A.; Krasnoselskikh, V.; de Wit, Dudok; Agapitov, O.; Froment, C.; Jagarlamudi, V.; Velli, M.; Bale, S.; Case, A.; Goetz, K.; Harvey, P.; Kasper, J.; Korreck, K.; Larson, D.; MacDowall, R.; Malaspina, D.; Pulupa, M.; Revillet, C.; Stevens, M.; Published by: Astronomy and Astrophysics Published on: 06/2021 YEAR: 2021 DOI: 10.1051/0004-6361/202039442 Solar wind; magnetic fields; waves; magnetohydrodynamics (MHD); Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics; Parker Data Used |
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The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are ca ... Telloni, Daniele; Sorriso-Valvo, Luca; Woodham, Lloyd; Panasenco, Olga; Velli, Marco; Carbone, Francesco; Zank, Gary; Bruno, Roberto; Perrone, Denise; Nakanotani, Masaru; Shi, Chen; Amicis, Raffaella; De Marco, Rossana; Jagarlamudi, Vamsee; Steinvall, Konrad; Marino, Raffaele; Adhikari, Laxman; Zhao, Lingling; Liang, Haoming; Tenerani, Anna; Laker, Ronan; Horbury, Timothy; Bale, Stuart; Pulupa, Marc; Malaspina, David; MacDowall, Robert; Goetz, Keith; de Wit, Thierry; Harvey, Peter; Kasper, Justin; Korreck, Kelly; Larson, Davin; Case, Anthony; Stevens, Michael; Whittlesey, Phyllis; Livi, Roberto; Owen, Christopher; Livi, Stefano; Louarn, Philippe; Antonucci, Ester; Romoli, Marco; Brien, Helen; Evans, Vincent; Angelini, Virginia; Published by: The Astrophysical Journal Published on: 05/2021 YEAR: 2021 DOI: 10.3847/2041-8213/abf7d1 Parker Data Used; Magnetohydrodynamics; Alfven waves; Space plasmas; interplanetary turbulence; Solar wind; 1964; 23; 1544; 830; 1534 |
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