Effect of electron resonant heating on the kinetic evolution and acceleration of the solar wind

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We investigate the effects of electron cyclotron resonant heating on the kinetic evolution and acceleration of the fast solar wind. A previous study has shown that kinetic wave-particle interactions due to ion resonant heating, may account for the bulk acceleration of the solar wind, the preferential heating of the helium ions over the protons, as well as the occasionally observed double-peaked proton velocity distributions. The model followed the evolution of the particle distributions along an inhomogeneous field line under the effects of ion heating, Coulomb collisions, and an ambipolar electric field that was consistent with the distributions themselves. This study extends the model to take into account also the effect of electron cyclotron resonant heating. Our parametric study shows that the electron heating does not change the solar wind qualitative features described above. However, the wave-particle interaction increases the ambipolar electric field, thereby enhancing the solar wind velocity.

Original languageEnglish
Pages (from-to)1351-1354
Number of pages4
JournalGeophysical Research Letters
Volume28
Issue number7
DOIs
Publication statusPublished - 2001 Apr 1

Fingerprint

solar wind
heating
electron
kinetics
wave-particle interactions
electrons
cyclotrons
ion
electric field
solar wind velocity
Coulomb collisions
protons
electric fields
helium ions
helium
effect
ions
velocity distribution
collision
wind velocity

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "We investigate the effects of electron cyclotron resonant heating on the kinetic evolution and acceleration of the fast solar wind. A previous study has shown that kinetic wave-particle interactions due to ion resonant heating, may account for the bulk acceleration of the solar wind, the preferential heating of the helium ions over the protons, as well as the occasionally observed double-peaked proton velocity distributions. The model followed the evolution of the particle distributions along an inhomogeneous field line under the effects of ion heating, Coulomb collisions, and an ambipolar electric field that was consistent with the distributions themselves. This study extends the model to take into account also the effect of electron cyclotron resonant heating. Our parametric study shows that the electron heating does not change the solar wind qualitative features described above. However, the wave-particle interaction increases the ambipolar electric field, thereby enhancing the solar wind velocity.",
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Effect of electron resonant heating on the kinetic evolution and acceleration of the solar wind. / Tam, Sunny Wing-Yee; Chang, T.

In: Geophysical Research Letters, Vol. 28, No. 7, 01.04.2001, p. 1351-1354.

Research output: Contribution to journalArticle

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