Role of turbulent dissipation and thermal convection in solar wind's temperature evolution

Details Role of turbulent dissipation and thermal convection in solar wind's temperature evolution Role of turbulent dissipation and thermal convection in solar wind's temperature evolution

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...10127549v&link_type=abstract

Journal of Geophysical Research, Volume 101, Issue A12, p. 27549-27554

Physics

2

Interplanetary Physics: Solar Wind Plasma, Interplanetary Physics: Mhd Waves And Turbulence

Scientific paper

In this brief report we calculate the turbulent dissipation rates in the solar wind using the Kolmogorov-like MHD turbulence phenomenology with Kolmogorov's constants calculated by Verma and Bhattacharjee [1995]. We find that the turbulent heating cannot account for the total heating of the non-Alfvénic streams in the solar wind. Solar wind observations indicate that the thermal conduction could contribute significantly to the temperature evolution of the solar wind plasma. In this paper we theoretically estimate the contribution of turbulent thermal convection to the temperature evolution; the theoretical estimates are consistent with observations.

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