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Found 7 entries in the Bibliography.
Showing entries from 1 through 7
| 2021 |
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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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On Alfvénic Slow Wind: A Journey From the Earth Back to the Sun Comparative studies of fast and slow solar wind streams performed over the past decades have illustrated several differences between the plasma regimes for these different flows, examples including features such as temperatures, particle distribution function anisotropies, and the nature of the embedded turbulence, specifically the Alfvénicity of the fluctuations. Though this two state classification of the solar wind primarily based on flow speed has been widely adopted, more in depth studies have found that slow solar win ... Amicis, R.; Perrone, D.; Bruno, R.; Velli, M.; Published by: Journal of Geophysical Research (Space Physics) Published on: 04/2021 YEAR: 2021 DOI: 10.1029/2020JA028996 Parker Data Used; Coronal holes; interplanetary magnetic field; MHD waves and turbulence; Solar wind plasma; solar wind sources; turbulence |
| 2020 |
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The Parker Solar Probe mission has shown the ubiquitous presence of strong magnetic field deflections, namely switchbacks, during its first perihelion where it was embedded in a highly Alfvenic slow stream. Here, we study the turbulent magnetic fluctuations around ion scales in three intervals characterized by a different switchback activity, identified by the behavior of the magnetic field radial component, B-r. Quiet (B-r does not show significant fluctuations), weakly disturbed (B-r has strong fluctuations but no reversal ... Perrone, Denise; Bruno, Roberto; Amicis, Raffaella; Telloni, Daniele; De Marco, Rossana; Stangalini, Marco; Perri, Silvia; Pezzi, Oreste; Alexandrova, Olga; Bale, Stuart; Published by: ASTROPHYSICAL JOURNAL Published on: 12/2020 YEAR: 2020 DOI: 10.3847/1538-4357/abc480 |
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Magnetohydrodynamic Turbulent Evolution of a Magnetic Cloud in the Outer Heliosphere Telloni, Daniele; Zhao, Lingling; Zank, Gary; Liang, Haoming; Nakanotani, Masaru; Adhikari, Laxman; Carbone, Francesco; Amicis, Raffaella; Perrone, Denise; Bruno, Roberto; Dasso, Sergio; Published by: \apjl Published on: 12/2020 YEAR: 2020 DOI: 10.3847/2041-8213/abcb03 Parker Data Used; Magnetohydrodynamics; interplanetary turbulence; Solar coronal mass ejections; interplanetary magnetic fields; Heliosphere; Solar wind; Solar magnetic reconnection; 1964; 830; 310; 824; 711; 1534; 1504 |
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The magnetic field measurements of the FIELDS instrument on the Parker Solar Probe (PSP) have shown intensities, throughout its first solar encounter, that require a very low source surface (SS) height ( R\ SS\ ⩽1.8R\ ⊙\ \ RSS⩽1.8R⊙ ) to be reconciled with magnetic field measurements at the Sun via potential field extrapolation (PFSS). However, during PSP\textquoterights second encounter, the situation went back to a more classic SS height ( R\ SS\ ⩽2 ... Panasenco, Olga; Velli, Marco; D\textquoterightAmicis, Raffaella; Shi, Chen; eville, Victor; Bale, Stuart; Badman, Samuel; Kasper, Justin; Korreck, Kelly; Bonnell, J.; de Wit, Thierry; Goetz, Keith; Harvey, Peter; MacDowall, Robert; Malaspina, David; Pulupa, Marc; Case, Anthony; Larson, Davin; Livi, Roberto; Stevens, Michael; Whittlesey, Phyllis; Published by: The Astrophysical Journal Supplement Series Published on: 02/2020 YEAR: 2020 DOI: 10.3847/1538-4365/ab61f4 |
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Alfv\ enic fluctuations in solar wind are an intrinsic property of fast streams, while slow intervals typically have a very low degree of Alfv\ enicity, with much more variable parameters. However, sometimes a slow wind can be highly Alfv\ enic. Here we compare three different regimes of solar wind, in terms of Alfv\ enic content and spectral properties, during a minimum phase of the solar activity and at 0.3 au. We show that fast and Alfv\ enic slow intervals share some common characteristics. This would suggest a simila ... Perrone, D.; D\textquoterightAmicis, R.; De Marco, R.; Matteini, L.; Stansby, D.; Bruno, R.; Horbury, T.; Published by: Astronomy \& Astrophysics Published on: 01/2020 YEAR: 2020 DOI: 10.1051/0004-6361/201937064 parker solar probe; plasmas; Solar Probe Plus; Solar wind; Sun: corona; Sun: heliosphere; turbulence |
| 2018 |
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On slow solar wind with high Alfv\ enicity: from composition and microphysics to spectral properties Alfv\ enic fluctuations are very common features in the solar wind and are found especially within the main portion of fast-wind streams while the slow wind usually is less Alfv\ enic and more variable. In general, the fast and slow winds show many differences, which span from the large-scale structure to small-scale phenomena, including also a different turbulent behaviour. Recent studies, however, have shown that even the slow wind can sometimes be highly Alfv\ enic, with fluctuations as large as those of the fast wind. ... D’Amicis, Raffaella; Matteini, Lorenzo; Bruno, Roberto; Published by: Monthly Notices of the Royal Astronomical Society Published on: 3/2019 YEAR: 2018 DOI: 10.1093/mnras/sty3329 Astrophysics - Solar and Stellar Astrophysics; methods: data analysis; parker solar probe; Physics - Data Analysis; Physics - Plasma Physics; Physics - Space Physics; Solar Probe Plus; Solar wind; Statistics and Probability; turbulence |
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