Electron Acceleration at the Earth's Bow Shock,Solar Flares and Interplanetary Shocks

Details Electron Acceleration at the Earth's Bow Shock,Solar Flares and Interplanetary Shocks Electron Acceleration at the Earth's Bow Shock,Solar Flares and Interplanetary Shocks

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..369..497o&link_type=abstract

New Solar Physics with Solar-B Mission ASP Conference Series, Vol. 369, proceedings of the conference held 8-11 November, 2005 a

Physics

Scientific paper

Solar flares and interplanetary shocks (IPSs) generate power-law energy distributions of electrons, but parameter dependence of electron acceleration has not been clarified from both theories and observations. Making use of in-situ data obtained by Geotail at the Earth's bow shock, we studied power-law formation of electron energy spectra with respect to the Alfvén Mach number M_A and shock angle θ_{Bn}. We found that the spectral index Γ of electron energy spectrum f(E)∝ E^{-Γ} is regulated by the whistler critical Mach number. sub-critical regime while Γ were concentrated between 3.0 and 3.5 in the super-critical regime. Electron acceleration at solar flares and interplanetary shocks are discussed based on the results.

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