VERITAS Studies of the Supernova Remnants Cas A and IC 443

Details VERITAS Studies of the Supernova Remnants Cas A and IC 443 VERITAS Studies of the Supernova Remnants Cas A and IC 443

2008-10-05

arxiv.org/abs/0810.0799v1

Astronomy and Astrophysics

Astrophysics

Submitted to Proceedings of "4th Heidelberg International Symposium on High Energy Gamma-Ray Astronomy 2008"

Scientific paper

10.1063/1.3076680

VERITAS observed the supernova remnants Cassiopeia A (Cas A) and IC 443 during 2007, resulting in strong TeV detections of both sources. Cas A is a young remnant, and bright in both the radio and nonthermal X-rays, both tracers of cosmic-ray electrons. IC 443 is a middle-aged composite remnant interacting with a molecular cloud; the molecular cloud provides an enhanced density of target material for hadronic cosmic rays to produce TeV gamma rays via pion decay. The TeV morphology - point-like for Cas A and extended for IC 443 - will be discussed in the context of existing multiwavelength data on the remnants.

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