PSP Bibliography



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Association of intermittency with electron heating in the near-Sun solar wind


AuthorPhillips, C.; Bandyopadhyay, R.; McComas, D.~J.; Bale, S.~D.;
KeywordsParker Data Used; (magnetohydrodynamics) MHD; turbulence; Sun: corona; Solar wind; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
AbstractSeveral studies in the near-Earth environment show that intermittent structures are important sites of energy dissipation and particle energization. Recent Parker Solar Probe (PSP) data, sampled in the near-Sun environment, have shown that proton heating is concentrated near coherent structures, suggesting local heating of protons by turbulent cascade in this region. However, whether electrons exhibit similar behaviour in the near-Sun environment is not clear. Here, we address this question using PSP data collected near the Sun during the first seven orbits. We use the partial variance of increments (PVI) technique to identify coherent structures. We find that electron temperature is preferentially enhanced near strong discontinuities. Our results provide strong support for the inhomogeneous heating of electrons in the young solar wind associated with the dissipation of turbulent fluctuations near intermittent structures.
Year of Publication2023
Journal\mnras
Volume519
Number of PagesL1-L4
Section
Date Publishedfeb
ISBN
URL
DOI10.1093/mnrasl/slac143