Stochastic Electron Acceleration in TeV Supernova Remnants

Details Stochastic Electron Acceleration in TeV Supernova Remnants Stochastic Electron Acceleration in TeV Supernova Remnants

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21630105l&link_type=abstract

American Astronomical Society, AAS Meeting #216, #301.05; Bulletin of the American Astronomical Society, Vol. 41, p.846

Astronomy and Astrophysics

Astronomy

Scientific paper

Since the discovery of TeV gamma-ray emission from a few shell-type supernova remnants with no detectable thermal X-ray emissions, more detailed and advanced observations and modelings have been made. However, whether the TeV gamma-rays are predominantly produced by relativistic electrons or protons is still a matter of debate. The hadronic scenario suggests a proton acceleration efficiency much higher than that for electrons. A very gradual high-energy cutoff is required to fit the gamma-ray spectrum in the leptonic scenario. I will discuss our recent study of stochastic electron acceleration in the downstream of strong non-relativistic shocks and show how a gradual high-energy cutoff of the electron distribution may emerge due to non-resonant interactions of relativistic electrons with a spectrum of compressible waves. This work is supported by the EU's SOLAIRE Research and Training Network at the University of Glasgow (MTRN-CT-2006-035484).

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