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

C. Phillips, R. Bandyopadhyay, D. J. McComas, S. D. Bale

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Several 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.

Original languageEnglish (US)
Pages (from-to)L1-L4
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume519
Issue number1
DOIs
StatePublished - Feb 1 2023

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • (magnetohydrodynamics) MHD
  • Sun: corona
  • solar wind
  • turbulence

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