Origin of gamma-ray emission in the shell of Cassiopeia A

Saha, L.
Ergin, Tülün
Majumdar, P.
Bozkurt, M.
Ercan, E. N.
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.

Citation Formats
L. Saha, T. Ergin, P. Majumdar, M. Bozkurt, and E. N. Ercan, “Origin of gamma-ray emission in the shell of Cassiopeia A,” ASTRONOMY & ASTROPHYSICS, vol. 563, pp. 0–0, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37111.