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DOE OSTI · 1577403

Electron Energy Partition across Interplanetary Shocks. II. Statistics

Wilson, III, Lynn B. (ORCID:0000000243131970)·Chen, Li-Jen (ORCID:000000024768189X)·Wang, Shan (ORCID:0000000267837759)·Schwartz, Steven J. (ORCID:0000000306822753)·Turner, Drew L. (ORCID:0000000224257818)·Stevens, Michael L. (ORCID:0000000277280085)·Kasper, Justin C. (ORCID:000000027077930X)·Osmane, Adnane (ORCID:0000000325555953)·Caprioli, Damiano (ORCID:0000000309398775)·Bale, Stuart D. (ORCID:0000000219893596)·Pulupa, Marc P. (ORCID:0000000215737457)·Salem, Chadi S. (ORCID:0000000265361531)·Goodrich, Katherine A. (ORCID:0000000242885084)
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Abstract

Abstract A statistical analysis of 15,210 electron velocity distribution function (VDF) fits, observed within ±2 hr of 52 interplanetary (IP) shocks by the Wind spacecraft near 1 au, is presented. This is the second in a three-part series on electron VDFs near IP shocks. The electron velocity moment statistics for the dense, low-energy core, tenuous, hot halo, and field-aligned beam/strahl are a statistically significant list of values illustrated with both histograms and tabular lists for reference and baselines in future work. Given the large statistics in this investigation, the beam/strahl fit results in the upstream are now the most comprehensive attempt to parameterize the beam/strahl electron velocity moments in the ambient solar wind. The median density, temperature, beta, and temperature anisotropy values for the core(halo)[beam/strahl] components, with subscripts ec(eh)[eb], of all fit results, respectively, are , , , and . This work will also serve as a 1 au baseline and reference for missions like Parker Solar Probe and Solar Orbiter .

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79 ASTRONOMY AND ASTROPHYSICSastronomy & astrophysicsinterplanetary particle accelerationinterplanetary shocksplasma astrophysicsplasma physicssolar coronal mass ejection shockssolar coronal mass ejectionssolar windspace plasmas

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Wilson, III, Lynn B. (ORCID:0000000243131970), Chen, Li-Jen (ORCID:000000024768189X), Wang, Shan (ORCID:0000000267837759), Schwartz, Steven J. (ORCID:0000000306822753), Turner, Drew L. (ORCID:0000000224257818), Stevens, Michael L. (ORCID:0000000277280085), Kasper, Justin C. (ORCID:000000027077930X), Osmane, Adnane (ORCID:0000000325555953), Caprioli, Damiano (ORCID:0000000309398775), Bale, Stuart D. (ORCID:0000000219893596), Pulupa, Marc P. (ORCID:0000000215737457), Salem, Chadi S. (ORCID:0000000265361531), Goodrich, Katherine A. (ORCID:0000000242885084). 2019-12-06. Electron Energy Partition across Interplanetary Shocks. II. Statistics. https://doi.org/10.3847/1538-4365%2Fab5445

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