{
  "id": "2204.02664",
  "version": "v1",
  "published": "2022-04-06T08:25:11.000Z",
  "updated": "2022-04-06T08:25:11.000Z",
  "title": "An Asymmetrical Model for High Energy Radiation of Cassiopeia A",
  "authors": [
    "Shihong Zhan",
    "Wei Wang",
    "Guobin Mou",
    "Zhuo Li"
  ],
  "comment": "7 pages, 7 figures. MNRAS in press",
  "categories": [
    "astro-ph.HE",
    "astro-ph.SR"
  ],
  "abstract": "Cassiopeia A (Cas A) supernova remnant shows strong radiation from radio to gamma-ray bands. The mechanism of gamma-ray radiation in Cas A and its possible contribution to PeV cosmic rays are still under debate. The X-ray imaging reveals an asymmetric profile of Cas A, suggesting the existence of a jet-like structure. In this work, we propose an asymmetrical model for Cas A, consisting of a fast moving jet-like structure and a slowly expanding isotropic shell. This model can account for the multi-wavelength spectra of Cas A, especially for the power-law hard X-ray spectrum from $\\sim$ 60 to 220 keV. The GeV to TeV emission from Cas A should be contributed by both hadronic and leptonic processes. Moreover, the jet-like structure may produce a gamma-ray flux of $\\sim 10^{-13}\\rm erg\\ cm^{-2}\\ s^{-1}$ at $\\sim 100$ TeV, to be examined by LHAASO and CTA.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-04-06T08:25:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "high energy radiation",
      "asymmetrical model",
      "cassiopeia",
      "power-law hard x-ray spectrum",
      "pev cosmic rays"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}