Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21534201b&link_type=abstract
American Astronomical Society, AAS Meeting #215, #342.01; Bulletin of the American Astronomical Society, Vol. 42, p.447
Astronomy and Astrophysics
Astronomy
Scientific paper
Shell-type supernova remnants (SNRs) are believed to be the best candidates for the acceleration site of galactic cosmic rays. SNRs are also now well established as sources of high-energy gamma-ray emission, which can be produced by the interactions of relativistic particle populations. The presence of cosmic rays accelerated in SNR shells makes gamma ray production possible through two channels: Inverse Compton scattering of local photon fields by a high-energy leptonic particle population, or neutral pion decay resulting from the interactions of a high-energy hadronic particle population with surrounding matter.
VERITAS is an array of four Atmospheric Imaging Cherenkov Telescopes sensitive to gamma rays between 100 GeV and 30 TeV in energy. This presentation will discuss VERITAS observations of SNRs, and how these observations help to determine the nature (hadronic or leptonic) of the cosmic ray population being accelerated in the remnants.
Boltuch Dana
VERITAS Collaboration
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