PSP Bibliography





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Found 222 entries in the Bibliography.


Showing entries from 1 through 50


2023

Structure of the Plasma near the Heliospheric Current Sheet as Seen by WISPR/Parker Solar Probe from inside the Streamer Belt

Parker Solar Probe (PSP) crossed the heliospheric current sheet (HCS) near the perihelion on encounters E8 and E11, enabling the Wide- field Imager for Solar Probe (WISPR) to image the streamer belt plasma in high resolution while flying through it. With perihelia of 16 R $_\ensuremath\odot$ and 13 R $_\ensuremath\odot$ for E8 and E11, respectively, WISPR images enable investigation of the structure of density encasing the HCS at much higher resolution than reported previously. As PSP flies closer to the Sun, fine-scale stru ...

Liewer, Paulett; Vourlidas, Angelos; Stenborg, Guillermo; Howard, Russell; Qiu, Jiong; Penteado, Paulo; Panasenco, Olga; Braga, Carlos;

Published by: \apj      Published on: may

YEAR: 2023     DOI: 10.3847/1538-4357/acc8c7

Parker Data Used; Solar coronal streamers; Solar K corona; 1486; 2042

Unexpected energetic particle observations near the Sun by Parker Solar Probe and Solar Orbiter

Solar energetic particles (SEPs) from suprathermal (few keV) up to relativistic (\ensuremath\simfew GeV) energies are accelerated at the Sun in association with solar flares and coronal mass ejection-driven shock waves. Although our knowledge of the origin, acceleration, and transport of these particles from close to the Sun through the interplanetary medium has advanced dramatically in the last 40 years, many puzzles have still remained unsolved due to the scarcity of in situ measurements well inside 1 AU. Furthermore, ener ...

Malandraki, O.~E.; Cohen, C.~M.~S.; Giacalone, J.; Mitchell, J.~G.; Chhiber, R.; McComas, D.~J.; iguez-Pacheco, Rodr\; Wimmer-Schweingruber, R.~F.; Ho, G.~C.;

Published by: Physics of Plasmas      Published on: may

YEAR: 2023     DOI: 10.1063/5.0147683

Parker Data Used

Magnetic Reconnection as the Driver of the Solar Wind

We present EUV solar observations showing evidence for omnipresent jetting activity driven by small-scale magnetic reconnection at the base of the solar corona. We argue that the physical mechanism that heats and drives the solar wind at its source is ubiquitous magnetic reconnection in the form of small-scale jetting activity (a.k.a. jetlets). This jetting activity, like the solar wind and the heating of the coronal plasma, is ubiquitous regardless of the solar cycle phase. Each event arises from small-scale reconnection of ...

Raouafi, Nour; Stenborg, G.; Seaton, D.~B.; Wang, H.; Wang, J.; DeForest, C.~E.; Bale, S.~D.; Drake, J.~F.; Uritsky, V.~M.; Karpen, J.~T.; DeVore, C.~R.; Sterling, A.~C.; Horbury, T.~S.; Harra, L.~K.; Bourouaine, S.; Kasper, J.~C.; Kumar, P.; Phan, T.~D.; Velli, M.;

Published by: \apj      Published on: mar

YEAR: 2023     DOI: 10.3847/1538-4357/acaf6c

Parker Data Used; Solar corona; Solar wind; magnetic fields; Solar magnetic reconnection; 1483; 1534; 994; 1504; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Interchange reconnection as the source of the fast solar wind within coronal holes

The fast solar wind that fills the heliosphere originates from deep within regions of open magnetic field on the Sun called coronal holes . The energy source responsible for accelerating the plasma is widely debated; however, there is evidence that it is ultimately magnetic in nature, with candidate mechanisms including wave heating$^1,2$ and interchange reconnection$^3-5$. The coronal magnetic field near the solar surface is structured on scales associated with supergranulation convection cells, whereby descending flows ...

Bale, S.~D.; Drake, J.~F.; McManus, M.~D.; Desai, M.~I.; Badman, S.~T.; Larson, D.~E.; Swisdak, M.; Horbury, T.~S.; Raouafi, N.~E.; Phan, T.; Velli, M.; McComas, D.~J.; Cohen, C.~M.~S.; Mitchell, D.; Panasenco, O.; Kasper, J.~C.;

Published by: \nat      Published on: jun

YEAR: 2023     DOI: 10.1038/s41586-023-05955-3

Parker Data Used; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Nature, Generation, and Dissipation of Alfv\ enic Kinks/Switchbacks Observed by Parker Solar Probe and WIND

The discovery of very prominent magnetic kinks/switchbacks in the solar wind within 0.3 au has become a scientific highlight of the Parker Solar Probe (PSP) mission. This discovery points at the promising impact of small-scale solar activity on the inner heliosphere. To address the nature, generation, and dissipation of these kinks, we perform a statistical analysis of the plasma and boundary properties of the kinks using PSP multi-encounter observations and WIND measurements at 1 au. The kinks show strong Alfv\ enicity and ...

Hou, Chuanpeng; Zhu, Xingyu; Zhuo, Rui; He, Jiansen; Verscharen, Daniel; Duan, Die;

Published by: \apj      Published on: jun

YEAR: 2023     DOI: 10.3847/1538-4357/accf94

Parker Data Used; Solar wind; interplanetary turbulence; Interplanetary discontinuities; 1534; 830; 820

Investigating Coronal Holes and CMEs as Sources of Brightness Depletion Detected in PSP/WISPR Images

The Parker Solar Probe (PSP) mission provides a unique opportunity to observe the solar corona from distances below 20 R $_☉$. In this work, we utilize white light images from the Wide-field Imager for Solar PRobe aboard the PSP from solar encounters 10 through 13 to examine the causes of brightness depletions of the corona during the rapid transit of PSP through the perihelia of its orbit. We analyze the effect of (1) coronal holes (CHs) and (2) energetic coronal mass ejection (CME) events on the observed brightness of th ...

Stenborg, Guillermo; Paouris, Evangelos; Howard, Russell; Vourlidas, Angelos; Hess, Phillip;

Published by: \apj      Published on: jun

YEAR: 2023     DOI: 10.3847/1538-4357/acd2cf

Parker Data Used; Solar F corona; Solar K corona; Solar coronal holes; Solar wind; Solar coronal mass ejections; Interplanetary dust; 1991; 2042; 1484; 1534; 310; 821

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

Whole Heliosphere and Planetary Interactions (WHPI): The Big Picture on Solar Cycle Minima

The Whole Heliosphere and Planetary Interactions (WHPI) is an international initiative to study the most recent solar minimum and its impact on the interconnected solar-heliospheric- planetary system by facilitating and encouraging interdisciplinary activities. Particular WHPI science foci include the global connected structure of the heliosphere and planetary space environments/atmospheres, the origins and impacts of high-speed solar wind streams, coronal mass ejections from Sun-to-Heliopause, and comparative solar minima. ...

Gibson, Sarah; Allen, Robert; de Toma, Giuliana; Emery, Barbara; Gasperini, Federico; Hewins, Ian; Hudson, Mary; Qian, Liying; Thompson, Barbara;

Published by: Journal of Geophysical Research (Space Physics)      Published on: jun

YEAR: 2023     DOI: 10.1029/2023JA031550

Parker Data Used

New Evidence on the Origin of Solar Wind Microstreams/Switchbacks

Microstreams are fluctuations in the solar wind speed and density associated with polarity-reversing folds in the magnetic field (also denoted switchbacks). Despite their long heritage, the origin of these microstreams/switchbacks remains poorly understood. For the first time, we investigated periodicities in microstreams during Parker Solar Probe (PSP) Encounter 10 to understand their origin. Our analysis was focused on the inbound corotation interval on 2021 November 19-21, while the spacecraft dove toward a small area wit ...

Kumar, Pankaj; Karpen, Judith; Uritsky, Vadim; Deforest, Craig; Raouafi, Nour; DeVore, Richard; Antiochos, Spiro;

Published by: \apjl      Published on: jul

YEAR: 2023     DOI: 10.3847/2041-8213/acd54e

Parker Data Used; Fast solar wind; Plasma jets; Solar magnetic reconnection; 1872; 1263; 1504; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

On the Evolution of the Anisotropic Scaling of Magnetohydrodynamic Turbulence in the Inner Heliosphere

We analyze a merged Parker Solar Probe (PSP) and Solar Orbiter (SO) data set covering heliocentric distances 13 R $_\ensuremath\odot$ \ensuremath\lesssim R \ensuremath\lesssim 220 R $_\ensuremath\odot$ to investigate the radial evolution of power and spectral index anisotropy in the wavevector space of solar wind turbulence. Our results show that anisotropic signatures of turbulence display a distinct radial evolution when fast, V $_sw$ \ensuremath\geq 400 km s$^-1$, and slow, V $_sw$ \ensuremath\leq 400 km s$^-1$, wind stre ...

Sioulas, Nikos; Velli, Marco; Huang, Zesen; Shi, Chen; Bowen, Trevor; Chandran, B.~D.~G.; Liodis, Ioannis; Davis, Nooshin; Bale, Stuart; Horbury, T.~S.; de Wit, Thierry; Larson, Davin; Stevens, Michael; Kasper, Justin; Owen, Christopher; Case, Anthony; Pulupa, Marc; Malaspina, David; Livi, Roberto; Goetz, Keith; Harvey, Peter; MacDowall, Robert; Bonnell, John;

Published by: \apj      Published on: jul

YEAR: 2023     DOI: 10.3847/1538-4357/acc658

Parker Data Used; interplanetary turbulence; Solar wind; Space plasmas; Magnetohydrodynamics; Plasma astrophysics; 830; 1534; 1544; 1964; 1261; Physics - Space Physics; Astrophysics - High Energy Astrophysical Phenomena; Physics - Plasma Physics

Planar Magnetic Structures Downstream of Coronal Mass Ejection-driven Shocks in the Inner Heliosphere

Planar magnetic structures (PMSs), characterized by interplanetary magnetic field vectors remaining parallel to a specific plane, are commonly observed in the solar wind, especially in the sheath region of interplanetary coronal mass ejections (ICMEs). In this study, PMS events in the 2 hr regions downstream of ICME-driven shocks were investigated to reveal the relationship between PMS formation and shock environment using data collected by the Parker Solar Probe, Solar Orbiter, and Venus Express spacecraft in the inner heli ...

Ruan, Mengsi; Zuo, Pingbing; Feng, Xueshang; Xu, Qi; Zhou, Zilu; Wei, Jiayun; Jiang, Chaowei; Wang, Yi; Xu, Xiaojun; Shen, Zhenning;

Published by: \apj      Published on: jul

YEAR: 2023     DOI: 10.3847/1538-4357/acd245

Parker Data Used; interplanetary magnetic fields; Interplanetary shocks; Interplanetary physics; Solar wind; 824; 829; 827; 1534

Magnetic reconnection as an erosion mechanism for magnetic switchbacks

Context. Magnetic switchbacks are localised polarity reversals in the radial component of the heliospheric magnetic field. Observations from Parker Solar Probe (PSP) have shown that they are a prevalent feature of the near-Sun solar wind. However, observations of switchbacks at 1 au and beyond are less frequent, suggesting that these structures evolve and potentially erode as they propagate away from the Sun. The specific mechanisms at play have not been identified thus far. \ Aims: We search for magnetic switchbacks undergo ...

Suen, G.~H.~H.; Owen, C.~J.; Verscharen, D.; Horbury, T.~S.; Louarn, P.; De Marco, R.;

Published by: \aap      Published on: jul

YEAR: 2023     DOI: 10.1051/0004-6361/202345922

Parker Data Used; Solar wind; Sun: heliosphere; plasmas; magnetic reconnection; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

Interchange reconnection dynamics in a solar coronal pseudo-streamer

Context. The generation of the slow solar wind remains an open problem in heliophysics. One of the current theories among those aimed at explaining the injection of coronal plasma in the interplanetary medium is based on interchange reconnection. It assumes that the exchange of magnetic connectivity between closed and open fields allows the injection of coronal plasma in the interplanetary medium to travel along the newly reconnected open field. However, the exact mechanism underlying this effect is still poorly understood. ...

Pellegrin-Frachon, T.; Masson, S.; Pariat, \; Wyper, P.~F.; DeVore, C.~R.;

Published by: \aap      Published on: jul

YEAR: 2023     DOI: 10.1051/0004-6361/202245611

Parker Data Used; magnetic fields; Sun: corona; magnetohydrodynamics (MHD); magnetic reconnection; Solar wind

Magnetic Field Spectral Evolution in the Inner Heliosphere

Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between 0.06 \ensuremath\lesssim R \ensuremath\lesssim 1 au. The spectrum is studied as a function of scale, normalized to the ion inertial scale d $_ i $. In the vicinity of the Sun, the inertial range is limited to a narrow range of scales and exhibits a power-law exponent of, \ensuremath\alpha $_ B $ = -3/2, independent of plasma parameters. The inertial range grows with distance, progressively extending to larger ...

Sioulas, Nikos; Huang, Zesen; Shi, Chen; Velli, Marco; Tenerani, Anna; Bowen, Trevor; Bale, Stuart; Huang, Jia; Vlahos, Loukas; Woodham, L.~D.; Horbury, T.~S.; de Wit, Thierry; Larson, Davin; Kasper, Justin; Owen, Christopher; Stevens, Michael; Case, Anthony; Pulupa, Marc; Malaspina, David; Bonnell, J.~W.; Livi, Roberto; Goetz, Keith; Harvey, Peter; MacDowall, Robert; c, Milan; Louarn, P.; Fedorov, A.;

Published by: \apjl      Published on: jan

YEAR: 2023     DOI: 10.3847/2041-8213/acaeff

Parker Data Used; Solar wind; Magnetohydrodynamics; interplanetary turbulence; Space plasmas; Plasma astrophysics; 1534; 1964; 830; 1544; 1261; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Magnetic Field Spectral Evolution in the Inner Heliosphere

Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between 0.06 \ensuremath\lesssim R \ensuremath\lesssim 1 au. The spectrum is studied as a function of scale, normalized to the ion inertial scale d $_ i $. In the vicinity of the Sun, the inertial range is limited to a narrow range of scales and exhibits a power-law exponent of, \ensuremath\alpha $_ B $ = -3/2, independent of plasma parameters. The inertial range grows with distance, progressively extending to larger ...

Sioulas, Nikos; Huang, Zesen; Shi, Chen; Velli, Marco; Tenerani, Anna; Bowen, Trevor; Bale, Stuart; Huang, Jia; Vlahos, Loukas; Woodham, L.~D.; Horbury, T.~S.; de Wit, Thierry; Larson, Davin; Kasper, Justin; Owen, Christopher; Stevens, Michael; Case, Anthony; Pulupa, Marc; Malaspina, David; Bonnell, J.~W.; Livi, Roberto; Goetz, Keith; Harvey, Peter; MacDowall, Robert; c, Milan; Louarn, P.; Fedorov, A.;

Published by: \apjl      Published on: jan

YEAR: 2023     DOI: 10.3847/2041-8213/acaeff

Parker Data Used; Solar wind; Magnetohydrodynamics; interplanetary turbulence; Space plasmas; Plasma astrophysics; 1534; 1964; 830; 1544; 1261; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

The 18-19 March 2022 series of $^3$He-rich events observed by Solar Orbiter at 0.36 au compared with EUV, X-ray, and radio observations

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

Parker Solar Probe: Four Years of Discoveries at Solar Cycle Minimum

Launched on 12 Aug. 2018, NASA s Parker Solar Probe had completed 13 of its scheduled 24 orbits around the Sun by Nov. 2022. The mission s primary science goal is to determine the structure and dynamics of the Sun s coronal magnetic field, understand how the solar corona and wind are heated and accelerated, and determine what processes accelerate energetic particles. Parker Solar Probe returned a treasure trove of science data that far exceeded quality, significance, and quantity expectations, leading to a significant number ...

Raouafi, N.~E.; Matteini, L.; Squire, J.; Badman, S.~T.; Velli, M.; Klein, K.~G.; Chen, C.~H.~K.; Matthaeus, W.~H.; Szabo, A.; Linton, M.; Allen, R.~C.; Szalay, J.~R.; Bruno, R.; Decker, R.~B.; Akhavan-Tafti, M.; Agapitov, O.~V.; Bale, S.~D.; Bandyopadhyay, R.; Battams, K.; Ber\vci\vc, L.; Bourouaine, S.; Bowen, T.~A.; Cattell, C.; Chandran, B.~D.~G.; Chhiber, R.; Cohen, C.~M.~S.; Amicis, R.; Giacalone, J.; Hess, P.; Howard, R.~A.; Horbury, T.~S.; Jagarlamudi, V.~K.; Joyce, C.~J.; Kasper, J.~C.; Kinnison, J.; Laker, R.; Liewer, P.; Malaspina, D.~M.; Mann, I.; McComas, D.~J.; Niembro-Hernandez, T.; Nieves-Chinchilla, T.; Panasenco, O.; y, Pokorn\; Pusack, A.; Pulupa, M.; Perez, J.~C.; Riley, P.; Rouillard, A.~P.; Shi, C.; Stenborg, G.; Tenerani, A.; Verniero, J.~L.; Viall, N.; Vourlidas, A.; Wood, B.~E.; Woodham, L.~D.; Woolley, T.;

Published by: ßr      Published on: feb

YEAR: 2023     DOI: 10.1007/s11214-023-00952-4

Parker Data Used; Sun; Corona; Solar wind; plasma; magnetic fields; coronal mass ejections; parker solar probe; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Parker Solar Probe: Four Years of Discoveries at Solar Cycle Minimum

Launched on 12 Aug. 2018, NASA s Parker Solar Probe had completed 13 of its scheduled 24 orbits around the Sun by Nov. 2022. The mission s primary science goal is to determine the structure and dynamics of the Sun s coronal magnetic field, understand how the solar corona and wind are heated and accelerated, and determine what processes accelerate energetic particles. Parker Solar Probe returned a treasure trove of science data that far exceeded quality, significance, and quantity expectations, leading to a significant number ...

Raouafi, N.~E.; Matteini, L.; Squire, J.; Badman, S.~T.; Velli, M.; Klein, K.~G.; Chen, C.~H.~K.; Matthaeus, W.~H.; Szabo, A.; Linton, M.; Allen, R.~C.; Szalay, J.~R.; Bruno, R.; Decker, R.~B.; Akhavan-Tafti, M.; Agapitov, O.~V.; Bale, S.~D.; Bandyopadhyay, R.; Battams, K.; Ber\vci\vc, L.; Bourouaine, S.; Bowen, T.~A.; Cattell, C.; Chandran, B.~D.~G.; Chhiber, R.; Cohen, C.~M.~S.; Amicis, R.; Giacalone, J.; Hess, P.; Howard, R.~A.; Horbury, T.~S.; Jagarlamudi, V.~K.; Joyce, C.~J.; Kasper, J.~C.; Kinnison, J.; Laker, R.; Liewer, P.; Malaspina, D.~M.; Mann, I.; McComas, D.~J.; Niembro-Hernandez, T.; Nieves-Chinchilla, T.; Panasenco, O.; y, Pokorn\; Pusack, A.; Pulupa, M.; Perez, J.~C.; Riley, P.; Rouillard, A.~P.; Shi, C.; Stenborg, G.; Tenerani, A.; Verniero, J.~L.; Viall, N.; Vourlidas, A.; Wood, B.~E.; Woodham, L.~D.; Woolley, T.;

Published by: ßr      Published on: feb

YEAR: 2023     DOI: 10.1007/s11214-023-00952-4

Parker Data Used; Sun; Corona; Solar wind; plasma; magnetic fields; coronal mass ejections; parker solar probe; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Parker Solar Probe Encounters the Leg of a Coronal Mass Ejection at 14 Solar Radii

We use Parker Solar Probe (PSP) observations to report the first direct measurements of the particle and field environments while crossing the leg of a coronal mass ejection (CME) very close to the Sun (\raisebox-0.5ex\textasciitilde14 Rs). An analysis that combines imaging from 1 au and PSP with a CME model, predicts an encounter time and duration that correspond to an unusual, complete dropout in low-energy solar energetic ions from H-Fe, observed by the Integrated Science Investigation of the Sun (IS\ensuremath\odotIS). T ...

McComas, D.~J.; Sharma, T.; Christian, E.~R.; Cohen, C.~M.~S.; Desai, M.~I.; Hill, M.~E.; Khoo, L.~Y.; Matthaeus, W.~H.; Mitchell, D.~G.; Pecora, F.; Rankin, J.~S.; Schwadron, N.~A.; Szalay, J.~R.; Shen, M.~M.; Braga, C.~R.; Mostafavi, P.~S.; Bale, S.~D.;

Published by: \apj      Published on: feb

YEAR: 2023     DOI: 10.3847/1538-4357/acab5e

Parker Data Used; Solar coronal mass ejections; interplanetary magnetic fields; Interplanetary medium; Interplanetary particle acceleration; Solar energetic particles; Solar wind; Solar coronal heating; Solar magnetic flux emergence; 310; 824; 825; 826; 1491; 1534; 1989; 2000

Turbulent magnetic reconnection generated by intense lasers

Turbulent magnetic reconnection is believed to occur in astrophysical plasmas, and it has been suggested to be a trigger of solar flares. It often occurs in long stretched and fragmented current sheets. Recent observations by the Parker Solar Probe, the Solar Dynamics Observatory and in situ satellite missions agree with signatures expected from turbulent reconnection. However, the underlying mechanisms, including how magnetic energy stored in the Sun s magnetic field is dissipated, remain unclear. Here we demonstrate turbul ...

Ping, Yongli; Zhong, Jiayong; Wang, Xiaogang; Han, Bo; Sun, Wei; Zhang, Yapeng; Yuan, Dawei; Xing, Chunqing; Wang, Jianzhao; Liu, Zhengdong; Zhang, Zhe; Qiao, Bin; Zhang, Hua; Li, Yutong; Zhu, Jianqiang; Zhao, Gang; Zhang, Jie;

Published by: Nature Physics      Published on: feb

YEAR: 2023     DOI: 10.1038/s41567-022-01855-x

Parker Data Used

Parker Solar Probe Observations of High Plasma \ensuremath\beta Solar Wind from the Streamer Belt

In general, slow solar wind from the streamer belt forms a high plasma \ensuremath\beta equatorial plasma sheet around the heliospheric current sheet (HCS) crossing, namely, the heliospheric plasma sheet (HPS). Current Parker Solar Probe (PSP) observations show that the HCS crossings near the Sun could be full or partial current sheet (PCS) crossings, and they share some common features but also have different properties. In this work, using the PSP observations from encounters 4-10, we identify streamer belt solar wind from ...

Huang, Jia; Kasper, J.~C.; Larson, Davin; McManus, Michael; Whittlesey, P.; Livi, Roberto; Rahmati, Ali; Romeo, Orlando; Klein, K.~G.; Sun, Weijie; van der Holst, Bart; Huang, Zhenguang; Jian, Lan; Szabo, Adam; Verniero, J.~L.; Chen, C.~H.~K.; Lavraud, B.; Liu, Mingzhe; Badman, Samuel; Niembro, Tatiana; Paulson, Kristoff; Stevens, M.; Case, A.~W.; Pulupa, Marc; Bale, Stuart; Halekas, J.~S.;

Published by: \apjs      Published on: apr

YEAR: 2023     DOI: 10.3847/1538-4365/acbcd2

Parker Data Used; Slow solar wind; interplanetary magnetic fields; Space plasmas; 1873; 824; 1544; Physics - Space Physics

Evolution of Magnetic Field Fluctuations and Their Spectral Properties within the Heliosphere: Statistical Approach

We present the first comprehensive statistical study of the evolution of compressive and noncompressive magnetic field fluctuations in the inner heliosphere. Based on Parker Solar Probe (PSP) and Solar Orbiter data at various distances from the Sun, we show the general trends and compare them with Wind observations near 1 au. The paper analyzes solar wind power spectra of magnetic field fluctuations in the inertial and kinetic ranges of frequencies. We find a systematic steepening of the spectrum in the inertial range with t ...

a, Jana; N\veme\vcek, Zden\vek; N\vemec, Franti\vsek; Verscharen, Daniel; Horbury, Timothy; Bale, Stuart; P\vrech, Lubom\;

Published by: \apjl      Published on: apr

YEAR: 2023     DOI: 10.3847/2041-8213/acc531

Parker Data Used; Solar wind; 1534

2022

Switchbacks in the Young Solar Wind: Electron Evolution Observed inside Switchbacks between 0.125 au and 0.25 au

Switchbacks are localized deviations from the nominal Parker spiral field in the solar wind. In this study, we investigate the electron distributions inside switchbacks, focusing primarily on the suprathermal (halo and strahl) populations. We explore electron parameters in relation to the angle of rotation of the magnetic field from radial to determine whether electron distributions observed within switchbacks have any differences from those outside of switchbacks. Our observations reveal several trends in the suprathermal e ...

Nair, Raaman; Halekas, Jasper; Whittlesey, Phyllis; Larson, Davin; Livi, Roberto; Berthomier, Matthieu; Kasper, Justin; Case, Anthony; Stevens, Michael; Bale, Stuart; MacDowall, Robert; Pulupa, Marc;

Published by: \apj      Published on: sep

YEAR: 2022     DOI: 10.3847/1538-4357/ac88c4

Parker Data Used; Solar wind; Space plasmas; Solar corona; Solar magnetic fields; Solar Physics; 1534; 1544; 1483; 1503; 1476

Continued PSP/WISPR Observations of a Phaethon-related Dust Trail

We present an update to the first white-light detections of a dust trail observed closely following the orbit of asteroid (3200) Phaethon, as seen by the Wide-field Imager for the Parker Solar Probe instrument on the NASA Parker Solar Probe mission. Here, we provide a summary and analysis of observations of the dust trail over nine separate mission encounters between 2018 October and 2021 August that saw the spacecraft approach to within 0.0277 au of the orbit of Phaethon. We find the photometric and estimated dust mass prop ...

Battams, Karl; Gutarra-Leon, Angel; Gallagher, Brendan; Knight, Matthew; Stenborg, Guillermo; Tanner, Sarah; Linton, Mark; Szalay, Jamey; Kelley, Michael; Howard, Russell;

Published by: \apj      Published on: sep

YEAR: 2022     DOI: 10.3847/1538-4357/ac83b5

Parker Data Used; Asteroids; Meteoroid dust clouds; Near-Earth objects; Small Solar System bodies; 72; 1039; 1092; 1469; Astrophysics - Earth and Planetary Astrophysics

The Radial Evolution of the Solar Wind as Organized by Electron Distribution Parameters

We utilize observations from the Parker Solar Probe (PSP) to study the radial evolution of the solar wind in the inner heliosphere. We analyze electron velocity distribution functions observed by the Solar Wind Electrons, Alphas, and Protons suite to estimate the coronal electron temperature and the local electric potential in the solar wind. From the latter value and the local flow speed, we compute the asymptotic solar wind speed. We group the PSP observations by asymptotic speed, and characterize the radial evolution of t ...

Halekas, J.~S.; Whittlesey, P.; Larson, D.~E.; Maksimovic, M.; Livi, R.; Berthomier, M.; Kasper, J.~C.; Case, A.~W.; Stevens, M.~L.; Bale, S.~D.; MacDowall, R.~J.; Pulupa, M.~P.;

Published by: \apj      Published on: sep

YEAR: 2022     DOI: 10.3847/1538-4357/ac85b8

Parker Data Used; Solar wind; Slow solar wind; Fast solar wind; 1534; 1873; 1872; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Overview of the Remote Sensing Observations from PSP Solar Encounter 10 with Perihelion at 13.3 R $_\ensuremath\odot$

The closest perihelion pass of Parker Solar Probe (PSP), so far, occurred between 2021 November 16 and 26 and reached \raisebox-0.5ex\textasciitilde13.29 R $_☉$ from Sun center. This pass resulted in very unique observations of the solar corona by the Wide-field Instrument for Solar PRobe (WISPR). WISPR observed at least 10 coronal mass ejections (CMEs), some of which were so close that the structures appear distorted. All of the CMEs appeared to have a magnetic flux rope (MFR) structure, and most were oriented such that t ...

Howard, Russell; Stenborg, Guillermo; Vourlidas, Angelos; Gallagher, Brendan; Linton, Mark; Hess, Phillip; Rich, Nathan; Liewer, Paulett;

Published by: \apj      Published on: sep

YEAR: 2022     DOI: 10.3847/1538-4357/ac7ff5

Parker Data Used; Solar coronal mass ejections; Solar wind; Solar K corona; Solar coronal streamers; 310; 1534; 2042; 1486; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics

The heliospheric ambipolar potential inferred from sunward-propagating halo electrons

We provide evidence that the sunward-propagating half of the solar wind electron halo distribution evolves without scattering in the inner heliosphere. We assume the particles conserve their total energy and magnetic moment, and perform a Liouville mapping on electron pitch angle distributions measured by the Parker Solar Probe SPAN-E instrument. Namely, we show that the distributions are consistent with Liouville s theorem if an appropriate interplanetary potential is chosen. This potential, an outcome of our fitting meth ...

Horaites, Konstantinos; Boldyrev, Stanislav;

Published by: \mnras      Published on: oct

YEAR: 2022     DOI: 10.1093/mnras/stac2051

Parker Data Used; plasmas; Solar wind; Physics - Space Physics

Magnetic Switchbacks Heat the Solar Corona

Akhavan-Tafti, M.; Kasper, J.; Huang, J.; Thomas, L.;

Published by: \apjl      Published on: oct

YEAR: 2022     DOI: 10.3847/2041-8213/ac913d

Parker Data Used; Solar coronal heating; Solar magnetic reconnection; Solar wind; Heliosphere; 1989; 1504; 1534; 711

The Solar Probe ANalyzer-Ions on the Parker Solar Probe

The Solar Probe ANalyzer for Ions (SPAN-I) onboard NASA s Parker Solar Probe spacecraft is an electrostatic analyzer with time-of- flight capabilities that measures the ion composition and three- dimensional distribution function of the thermal corona and solar-wind plasma. SPAN-I measures the energy per charge of ions in the solar wind from 2 eV to 30 keV with a field of view of 247.\textdegree5 \texttimes 120\textdegree while simultaneously separating H$^+$ from He$^++$ to develop 3D velocity distribution functions of indi ...

Livi, Roberto; Larson, Davin; Kasper, Justin; Abiad, Robert; Case, A.~W.; Klein, Kristopher; Curtis, David; Dalton, Gregory; Stevens, Michael; Korreck, Kelly; Ho, George; Robinson, Miles; Tiu, Chris; Whittlesey, Phyllis; Verniero, Jaye; Halekas, Jasper; McFadden, James; Marckwordt, Mario; Slagle, Amanda; Abatcha, Mamuda; Rahmati, Ali; McManus, Michael;

Published by: \apj      Published on: oct

YEAR: 2022     DOI: 10.3847/1538-4357/ac93f5

Parker Data Used; Heliosphere; The Sun; Solar Physics; 711; 1693; 1476

Switchback deflections beyond the early parker solar probe encounters

Switchbacks are Aflv\ enic fluctuations in the solar wind, which exhibit large rotations in the magnetic field direction. Observations from Parker Solar Probe s (PSP s) first two solar encounters have formed the basis for many of the described switchback properties and generation mechanisms. However, this early data may not be representative of the typical near-Sun solar wind, biasing our current understanding of these phenomena. One defining switchback property is the magnetic deflection direction. During the first solar en ...

Laker, R.; Horbury, T.~S.; Matteini, L.; Bale, S.~D.; Stawarz, J.~E.; Woodham, L.~D.; Woolley, T.;

Published by: \mnras      Published on: nov

YEAR: 2022     DOI: 10.1093/mnras/stac2477

Parker Data Used; Sun: magnetic fields; Sun: heliosphere; Solar wind; Physics - Space Physics

Observations of Quiescent Solar Wind Regions with Near-f $_ce$ Wave Activity

In situ measurements in the near-Sun solar wind from the Parker Solar Probe have revealed the existence of quiescent solar wind regions: extended regions of solar wind with low-amplitude turbulent magnetic field fluctuations compared to adjacent regions. Identified through the study of harmonic waves near the electron cyclotron frequency (f $_ce$), these quiescent regions are shown to host a variety of plasma waves. The near-f $_ce$ harmonic waves are observed exclusively in quiescent regions, and as such, they can be used a ...

Short, Benjamin; Malaspina, David; Halekas, Jasper; Romeo, Orlando; Verniero, J.~L.; Finley, Adam; Kasper, Justin; Rahmati, Ali; Bale, Stuart; Bonnell, John; Case, Anthony; de Wit, Thierry; Goetz, Keith; Goodrich, Katherine; Harvey, Peter; Korreck, Kelly; Larson, Davin; Livi, Roberto; MacDowall, Robert; Pulupa, Marc; Stevens, Michael; Whittlesey, Phyllis;

Published by: \apj      Published on: nov

YEAR: 2022     DOI: 10.3847/1538-4357/ac97e4

Parker Data Used; Solar wind; interplanetary turbulence; Space plasmas; Solar magnetic fields; Heliosphere; 1534; 830; 1544; 1503; 711

CMEs and SEPs During November-December 2020: A Challenge for Real-Time Space Weather Forecasting

Predictions of coronal mass ejections (CMEs) and solar energetic particles (SEPs) are a central issue in space weather forecasting. In recent years, interest in space weather predictions has expanded to include impacts at other planets beyond Earth as well as spacecraft scattered throughout the heliosphere. In this sense, the scope of space weather science now encompasses the whole heliospheric system, and multipoint measurements of solar transients can provide useful insights and validations for prediction models. In this w ...

Palmerio, Erika; Lee, Christina; Mays, Leila; Luhmann, Janet; Lario, David; anchez-Cano, Beatriz; Richardson, Ian; Vainio, Rami; Stevens, Michael; Cohen, Christina; Steinvall, Konrad; Möstl, Christian; Weiss, Andreas; Nieves-Chinchilla, Teresa; Li, Yan; Larson, Davin; Heyner, Daniel; Bale, Stuart; Galvin, Antoinette; Holmström, Mats; Khotyaintsev, Yuri; Maksimovic, Milan; Mitrofanov, Igor;

Published by: Space Weather      Published on: may

YEAR: 2022     DOI: 10.1029/2021SW002993

Parker Data Used; coronal mass ejections; Solar energetic particles; space weather forecasts; MHD models; Inner heliosphere; Solar wind; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics; Physics - Space Physics

CMEs and SEPs During November-December 2020: A Challenge for Real-Time Space Weather Forecasting

Predictions of coronal mass ejections (CMEs) and solar energetic particles (SEPs) are a central issue in space weather forecasting. In recent years, interest in space weather predictions has expanded to include impacts at other planets beyond Earth as well as spacecraft scattered throughout the heliosphere. In this sense, the scope of space weather science now encompasses the whole heliospheric system, and multipoint measurements of solar transients can provide useful insights and validations for prediction models. In this w ...

Palmerio, Erika; Lee, Christina; Mays, Leila; Luhmann, Janet; Lario, David; anchez-Cano, Beatriz; Richardson, Ian; Vainio, Rami; Stevens, Michael; Cohen, Christina; Steinvall, Konrad; Möstl, Christian; Weiss, Andreas; Nieves-Chinchilla, Teresa; Li, Yan; Larson, Davin; Heyner, Daniel; Bale, Stuart; Galvin, Antoinette; Holmström, Mats; Khotyaintsev, Yuri; Maksimovic, Milan; Mitrofanov, Igor;

Published by: Space Weather      Published on: may

YEAR: 2022     DOI: 10.1029/2021SW002993

Parker Data Used; coronal mass ejections; Solar energetic particles; space weather forecasts; MHD models; Inner heliosphere; Solar wind; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics; Physics - Space Physics

Statistical Analysis of Intermittency and its Association with Proton Heating in the Near-Sun Environment

We use data from the first six encounters of the Parker Solar Probe and employ the partial variance of increments (PVI) method to study the statistical properties of coherent structures in the inner heliosphere with the aim of exploring physical connections between magnetic field intermittency and observable consequences such as plasma heating and turbulence dissipation. Our results support proton heating localized in the vicinity of, and strongly correlated with, magnetic structures characterized by PVI \ensuremath\geq 1. W ...

Sioulas, Nikos; Velli, Marco; Chhiber, Rohit; Vlahos, Loukas; Matthaeus, William; Bandyopadhyay, Riddhi; Cuesta, Manuel; Shi, Chen; Bowen, Trevor; Qudsi, Ramiz; Stevens, Michael; Bale, Stuart;

Published by: \apj      Published on: mar

YEAR: 2022     DOI: 10.3847/1538-4357/ac4fc1

Parker Data Used; Solar wind; Space plasmas; Plasma astrophysics; 1534; 1544; 1261; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

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

Suprathermal Ion Energy Spectra and Anisotropies near the Heliospheric Current Sheet Crossing Observed by the Parker Solar Probe during Encounter 7

We present observations of \ensuremath\gtrsim10-100 keV nucleon$^-1$ suprathermal (ST) H, He, O, and Fe ions associated with crossings of the heliospheric current sheet (HCS) at radial distances of <0.1 au from the Sun. Our key findings are as follows: (1) very few heavy ions are detected during the first full crossing, the heavy-ion intensities are reduced during the second partial crossing and peak just after the second crossing; (2) ion arrival times exhibit no velocity dispersion; (3) He pitch-angle distributions track t ...

Desai, M.~I.; Mitchell, D.~G.; McComas, D.~J.; Drake, J.~F.; Phan, T.; Szalay, J.~R.; Roelof, E.~C.; Giacalone, J.; Hill, M.~E.; Christian, E.~R.; Schwadron, N.~A.; McNutt, R.~L.; Wiedenbeck, M.~E.; Joyce, C.; Cohen, C.~M.~S.; Davis, A.~J.; Krimigis, S.~M.; Leske, R.~A.; Matthaeus, W.~H.; Malandraki, O.; Mewaldt, R.~A.; Labrador, A.; Stone, E.~C.; Bale, S.~D.; Verniero, J.; Rahmati, A.; Whittlesey, P.; Livi, R.; Larson, D.; Pulupa, M.; MacDowall, R.~J.; Niehof, J.~T.; Kasper, J.~C.; Horbury, T.~S.;

Published by: \apj      Published on: mar

YEAR: 2022     DOI: 10.3847/1538-4357/ac4961

Parker Data Used; The Sun; Solar magnetic reconnection; Interplanetary particle acceleration; interplanetary magnetic fields; Heliosphere; 1693; 1504; 826; 824; 711; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Suprathermal Ion Energy Spectra and Anisotropies near the Heliospheric Current Sheet Crossing Observed by the Parker Solar Probe during Encounter 7

We present observations of \ensuremath\gtrsim10-100 keV nucleon$^-1$ suprathermal (ST) H, He, O, and Fe ions associated with crossings of the heliospheric current sheet (HCS) at radial distances of <0.1 au from the Sun. Our key findings are as follows: (1) very few heavy ions are detected during the first full crossing, the heavy-ion intensities are reduced during the second partial crossing and peak just after the second crossing; (2) ion arrival times exhibit no velocity dispersion; (3) He pitch-angle distributions track t ...

Desai, M.~I.; Mitchell, D.~G.; McComas, D.~J.; Drake, J.~F.; Phan, T.; Szalay, J.~R.; Roelof, E.~C.; Giacalone, J.; Hill, M.~E.; Christian, E.~R.; Schwadron, N.~A.; McNutt, R.~L.; Wiedenbeck, M.~E.; Joyce, C.; Cohen, C.~M.~S.; Davis, A.~J.; Krimigis, S.~M.; Leske, R.~A.; Matthaeus, W.~H.; Malandraki, O.; Mewaldt, R.~A.; Labrador, A.; Stone, E.~C.; Bale, S.~D.; Verniero, J.; Rahmati, A.; Whittlesey, P.; Livi, R.; Larson, D.; Pulupa, M.; MacDowall, R.~J.; Niehof, J.~T.; Kasper, J.~C.; Horbury, T.~S.;

Published by: \apj      Published on: mar

YEAR: 2022     DOI: 10.3847/1538-4357/ac4961

Parker Data Used; The Sun; Solar magnetic reconnection; Interplanetary particle acceleration; interplanetary magnetic fields; Heliosphere; 1693; 1504; 826; 824; 711; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Flux rope and dynamics of the heliospheric current sheet. Study of the Parker Solar Probe and Solar Orbiter conjunction of June 2020

Context. Solar Orbiter and Parker Solar Probe jointly observed the solar wind for the first time in June 2020, capturing data from very different solar wind streams: calm, Alfv\ enic wind and also highly dynamic large-scale structures. Context. Our aim is to understand the origin and characteristics of the highly dynamic solar wind observed by the two probes, particularly in the vicinity of the heliospheric current sheet (HCS). \ Methods: We analyzed the plasma data obtained by Parker Solar Probe and Solar Orbiter in situ du ...

Réville, V.; Fargette, N.; Rouillard, A.~P.; Lavraud, B.; Velli, M.; Strugarek, A.; Parenti, S.; Brun, A.~S.; Shi, C.; Kouloumvakos, A.; Poirier, N.; Pinto, R.~F.; Louarn, P.; Fedorov, A.; Owen, C.~J.; enot, V.; Horbury, T.~S.; Laker, R.; Brien, H.; Angelini, V.; Fauchon-Jones, E.; Kasper, J.~C.;

Published by: \aap      Published on: mar

YEAR: 2022     DOI: 10.1051/0004-6361/202142381

Parker Data Used; Solar wind; magnetohydrodynamics (MHD); magnetic reconnection; methods: numerical; methods: data analysis; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

Flux rope and dynamics of the heliospheric current sheet. Study of the Parker Solar Probe and Solar Orbiter conjunction of June 2020

Context. Solar Orbiter and Parker Solar Probe jointly observed the solar wind for the first time in June 2020, capturing data from very different solar wind streams: calm, Alfv\ enic wind and also highly dynamic large-scale structures. Context. Our aim is to understand the origin and characteristics of the highly dynamic solar wind observed by the two probes, particularly in the vicinity of the heliospheric current sheet (HCS). \ Methods: We analyzed the plasma data obtained by Parker Solar Probe and Solar Orbiter in situ du ...

Réville, V.; Fargette, N.; Rouillard, A.~P.; Lavraud, B.; Velli, M.; Strugarek, A.; Parenti, S.; Brun, A.~S.; Shi, C.; Kouloumvakos, A.; Poirier, N.; Pinto, R.~F.; Louarn, P.; Fedorov, A.; Owen, C.~J.; enot, V.; Horbury, T.~S.; Laker, R.; Brien, H.; Angelini, V.; Fauchon-Jones, E.; Kasper, J.~C.;

Published by: \aap      Published on: mar

YEAR: 2022     DOI: 10.1051/0004-6361/202142381

Parker Data Used; Solar wind; magnetohydrodynamics (MHD); magnetic reconnection; methods: numerical; methods: data analysis; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

PSP Observations of a Slow Shock Pair Bounding a Large-Scale Plasmoid/Macro Magnetic Hole

Slow shocks are introduced to be the main dissipation sites in Petschek reconnection model, but they are seldom observed in interplanetary space. We report a slow shock pair bounding a plasmoid/macro magnetic hole observed by Parker Solar Probe. The jump conditions across the shocks are examined and confirmed to satisfy the Rankine-Hugoniot relations. The flow speed in the preshock and postshock regions of both shocks match up with the characteristics of slow shocks. The slow shock pair is suggested to be a part of a curved ...

Zhou, Zilu; Xu, Xiaojun; Zuo, Pingbing; Wang, Yi; Wang, Ludi; Ye, Yudong; Wang, Ming; Chang, Qing; Wang, Xing; Luo, Lei;

Published by: \grl      Published on: mar

YEAR: 2022     DOI: 10.1029/2021GL097564

Parker Data Used; slow shocks; magnetic reconnection; Solar wind; magnetic hole

PSP/WISPR Observations of Dust Density Depletion near the Sun. II. New Insights from within the Depletion Zone

Visible light observations from the Wide-field Imager for Solar PRobe (WISPR) aboard the Parker Solar Probe (PSP) mission offer a unique opportunity to study the dust environment near the Sun. The existence of a dust-free zone (DFZ) around stars was postulated almost a century ago. Despite numerous attempts to detect it from as close as 0.3 au, observational evidence of a circumsolar DFZ has remained elusive. Analysis of WISPR images obtained from heliocentric distances between 13.3-53.7 R $_\ensuremath\odot$ over multiple P ...

Stenborg, Guillermo; Howard, Russell; Vourlidas, Angelos; Gallagher, Brendan;

Published by: \apj      Published on: jun

YEAR: 2022     DOI: 10.3847/1538-4357/ac6b36

Parker Data Used; Circumstellar dust; Solar F corona; 236; 1991

The Dynamic Structure of Coronal Hole Boundaries

The boundaries of solar coronal holes are difficult to uniquely define observationally but are sites of interest in part because the slow solar wind appears to originate there. The aim of this article is to explore the dynamics of interchange magnetic reconnection at different types of coronal hole boundaries- namely streamers and pseudostreamers-and their implications for the coronal structure. We describe synthetic observables derived from three-dimensional magnetohydrodynamic simulations of the atmosphere of the Sun in wh ...

Aslanyan, V.; Pontin, D.~I.; Scott, R.~B.; Higginson, A.~K.; Wyper, P.~F.; Antiochos, S.~K.;

Published by: \apj      Published on: jun

YEAR: 2022     DOI: 10.3847/1538-4357/ac69ed

Parker Data Used; Solar Physics; Solar magnetic reconnection; Solar corona; Solar coronal holes; Slow solar wind; Magnetohydrodynamics; 1476; 1504; 1483; 1484; 1873; 1964

Influence of Large-scale Interplanetary Structures on the Propagation of Solar Energetic Particles: The Multispacecraft Event on 2021 October 9

An intense solar energetic particle (SEP) event was observed on 2021 October 9 by multiple spacecraft distributed near the ecliptic plane at heliocentric radial distances R \ensuremath\lesssim 1 au and within a narrow range of heliolongitudes. A stream interaction region (SIR), sequentially observed by Parker Solar Probe (PSP) at R = 0.76 au and 48\textdegree east from Earth (\ensuremath\phi = E48\textdegree), STEREO-A (at R = 0.96 au, \ensuremath\phi = E39\textdegree), Solar Orbiter (SolO; at R = 0.68 au, \ensuremath\phi = ...

Lario, D.; Wijsen, N.; Kwon, R.~Y.; anchez-Cano, B.; Richardson, I.~G.; Pacheco, D.; Palmerio, E.; Stevens, M.~L.; Szabo, A.; Heyner, D.; Dresing, N.; omez-Herrero, R.; Carcaboso, F.; Aran, A.; Afanasiev, A.; Vainio, R.; Riihonen, E.; Poedts, S.; Brüden, M.; Xu, Z.~G.; Kollhoff, A.;

Published by: \apj      Published on: jul

YEAR: 2022     DOI: 10.3847/1538-4357/ac6efd

Parker Data Used; Corotating streams; Solar energetic particles; Solar coronal mass ejection shocks; 314; 1491; 1997

Influence of Large-scale Interplanetary Structures on the Propagation of Solar Energetic Particles: The Multispacecraft Event on 2021 October 9

An intense solar energetic particle (SEP) event was observed on 2021 October 9 by multiple spacecraft distributed near the ecliptic plane at heliocentric radial distances R \ensuremath\lesssim 1 au and within a narrow range of heliolongitudes. A stream interaction region (SIR), sequentially observed by Parker Solar Probe (PSP) at R = 0.76 au and 48\textdegree east from Earth (\ensuremath\phi = E48\textdegree), STEREO-A (at R = 0.96 au, \ensuremath\phi = E39\textdegree), Solar Orbiter (SolO; at R = 0.68 au, \ensuremath\phi = ...

Lario, D.; Wijsen, N.; Kwon, R.~Y.; anchez-Cano, B.; Richardson, I.~G.; Pacheco, D.; Palmerio, E.; Stevens, M.~L.; Szabo, A.; Heyner, D.; Dresing, N.; omez-Herrero, R.; Carcaboso, F.; Aran, A.; Afanasiev, A.; Vainio, R.; Riihonen, E.; Poedts, S.; Brüden, M.; Xu, Z.~G.; Kollhoff, A.;

Published by: \apj      Published on: jul

YEAR: 2022     DOI: 10.3847/1538-4357/ac6efd

Parker Data Used; Corotating streams; Solar energetic particles; Solar coronal mass ejection shocks; 314; 1491; 1997

On the Transmission of Turbulent Structures across the Earth s Bow Shock

Collisionless shocks and plasma turbulence are crucial ingredients for a broad range of astrophysical systems. The shock-turbulence interaction, and in particular the transmission of fully developed turbulence across the quasi-perpendicular Earth s bow shock, is here addressed using a combination of spacecraft observations and local numerical simulations. An alignment between the Wind (upstream) and Magnetospheric Multiscale (downstream) spacecraft is used to study the transmission of turbulent structures across the shock, r ...

Trotta, Domenico; Pecora, Francesco; Settino, Adriana; Perrone, Denise; Hietala, Heli; Horbury, Timothy; Matthaeus, William; Burgess, David; Servidio, Sergio; Valentini, Francesco;

Published by: \apj      Published on: jul

YEAR: 2022     DOI: 10.3847/1538-4357/ac7798

Parker Data Used; Shocks; Space plasmas; interplanetary turbulence; 2086; 1544; 830; Physics - Space Physics

Multipoint Interplanetary Coronal Mass Ejections Observed with Solar Orbiter, BepiColombo, Parker Solar Probe, Wind, and STEREO-A

We report the result of the first search for multipoint in situ and imaging observations of interplanetary coronal mass ejections (ICMEs) starting with the first Solar Orbiter (SolO) data in 2020 April-2021 April. A data exploration analysis is performed including visualizations of the magnetic-field and plasma observations made by the five spacecraft SolO, BepiColombo, Parker Solar Probe (PSP), Wind, and STEREO-A, in connection with coronagraph and heliospheric imaging observations from STEREO-A/SECCHI and SOHO/LASCO. We id ...

Möstl, Christian; Weiss, Andreas; Reiss, Martin; Amerstorfer, Tanja; Bailey, Rachel; Hinterreiter, Jürgen; Bauer, Maike; Barnes, David; Davies, Jackie; Harrison, Richard; von Forstner, Johan; Davies, Emma; Heyner, Daniel; Horbury, Tim; Bale, Stuart;

Published by: \apjl      Published on: jan

YEAR: 2022     DOI: 10.3847/2041-8213/ac42d0

Parker Data Used; 310; 1526; 1534; 1476; 827; 824; 829; 711; 2037; 1472; 1528; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Variable Ion Compositions of Solar Energetic Particle Events in the Inner Heliosphere: A Field Line Braiding Model with Compound Injections

We propose a model for interpreting highly variable ion composition ratios in solar energetic particle (SEP) events recently observed by the Parker Solar Probe (PSP) at 0.3-0.45 au. We use numerical simulations to calculate SEP propagation in a turbulent interplanetary magnetic field with a Kolmogorov power spectrum from large scales down to the gyration scale of energetic particles. We show that when the source regions of different species are offset by a distance comparable to the size of the source regions, the observed e ...

Guo, Fan; Zhao, Lulu; Cohen, Christina; Giacalone, Joe; Leske, R.~A.; Wiedenbeck, M.~E.; Kahler, S.~W.; Li, Xiaocan; Zhang, Qile; Ho, George; Desai, Mihir;

Published by: \apj      Published on: jan

YEAR: 2022     DOI: 10.3847/1538-4357/ac3233

Parker Data Used; 1491; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Clouds of Spacecraft Debris Liberated by Hypervelocity Dust Impacts on Parker Solar Probe

Hypervelocity impacts on spacecraft surfaces produce a wide range of effects including transient plasma clouds, surface material ablation, and for some impacts, the liberation of spacecraft material as debris clouds. This study examines debris-producing impacts on the Parker Solar Probe spacecraft as it traverses the densest part of the zodiacal cloud: the inner heliosphere. Hypervelocity impacts by interplanetary dust grains on the spacecraft that produce debris clouds are identified and examined. Impact-generated plasma an ...

Malaspina, David; Stenborg, Guillermo; Mehoke, Doug; Al-Ghazwi, Adel; Shen, Mitchell; Hsu, Hsiang-Wen; Iyer, Kaushik; Bale, Stuart; de Wit, Thierry;

Published by: \apj      Published on: jan

YEAR: 2022     DOI: 10.3847/1538-4357/ac3bbb

Parker Data Used; 1845; 821; 1549; 1542; 1544

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

Parker Data Used; 1534; 1964

Parker Solar Probe Imaging of the Night Side of Venus

We present images of Venus from the Wide-Field Imager for Parker Solar Probe (WISPR) telescope on board the Parker Solar Probe (PSP) spacecraft, obtained during PSP s third and fourth flybys of Venus on 2020 July 11 and 2021 February 20, respectively. Thermal emission from the surface is observed on the night side, representing the shortest wavelength observations of this emission ever, the first detection of the Venusian surface by an optical telescope observing below 0.8 \ensuremath\mum. Consistent with previous observatio ...

Wood, Brian; Hess, Phillip; Lustig-Yaeger, Jacob; Gallagher, Brendan; Korwan, Daniel; Rich, Nathan; Stenborg, Guillermo; Thernisien, Arnaud; Qadri, Syed; Santiago, Freddie; Peralta, Javier; Arney, Giada; Izenberg, Noam; Vourlidas, Angelos; Linton, Mark; Howard, Russell; Raouafi, Nour;

Published by: \grl      Published on: feb

YEAR: 2022     DOI: 10.1029/2021GL096302

Parker Data Used



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