Published January 1, 2014
| Version v1
Journal article
Open
Origin of gamma-ray emission in the shell of Cassiopeia A
- 1. Saha Inst Nucl Phys, Kolkata 700064, India
- 2. Bogazici Univ, Dept Phys, TR-34342 Bebek, Turkey
Description
Context. Non-thermal X-ray emission from the shell of Cassiopeia A (Cas A) has been an interesting subject of study, as it provides information about relativistic electrons and their acceleration mechanisms in shocks. The Chandra X-ray observatory revealed the detailed spectral and spatial structure of this supernova remnant in X-rays. The spectral analysis of the Chandra X-ray data of Cas A shows unequal flux levels for different regions of the shell, which can be attributed to different magnetic fields in those regions. Additionally, the GeV gamma-ray emission observed by the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope showed that the hadronic processes are dominating in Cas A, which is a clear signature of acceleration of protons.
Files
bib-7fd7c95e-8fff-42b5-a53c-331fb8740cd5.txt
Files
(162 Bytes)
| Name | Size | Download all |
|---|---|---|
|
md5:51c03a08c3263dce4dc15893e0547f88
|
162 Bytes | Preview Download |