Sunday, August 4, 2013

1308.0195 (T. Ergin et al.)

Modeling the Shell of Cassiopeia A to find the TeV Gamma-ray Emission Region    [PDF]

T. Ergin, L. Saha, P. Majumdar, M. Bozkurt, E. N. Ercan
We will present the multi-wavelength modeling of the supernova remnant Cassiopeia A's shell based on radio, X-rays, and GeV-TeV gamma rays. Our aim is to estimate the location of TeV gamma rays with the help of spectral analysis of X-rays from different regions of the shell, because Chandra X-ray observations have a far better angular resolution than the gamma-ray measurements. Our analysis shows X-ray flux levels from various regions of the remnant to be different. We find that leptonic model is unable to explain the GeV and TeV data, simultaneously. So, we invoke a hadronic model as an additional component to explain the GeV and TeV data.
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