Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1307c&link_type=abstract
American Astronomical Society, SPD meeting #40, #13.07; Bulletin of the American Astronomical Society, Vol. 41, p.833
Astronomy and Astrophysics
Astronomy
Scientific paper
Recent observations (e.g., Ralchenko et al. 2007) imply that electrons in the quiet solar corona may have a suprathermal component superposed on the Maxwellian distribution of the typical corona temperature. In this poster, we investigate the possibility of generating a nonthermal tail from an initially Maxwellian spectrum in the quiet corona. By introducing stochastic turbulence of some generic form, we determine the evolution of electron spectrum towards a steady state condition by solving the time-dependent Fokker-Planck equation. At each time step, we evaluate the energy loss rate and adjust the level of turbulence to achieve the steady state condition. Our preliminary results indicate that a nonthermal tails can develop, however, in most cases these tails are too weak to account for the observations.
Chen Qingrong
Petrosian Vahe
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