{
  "id": "2001.08897",
  "version": "v1",
  "published": "2020-01-24T06:10:30.000Z",
  "updated": "2020-01-24T06:10:30.000Z",
  "title": "On the Injection of Relativistic Electrons in the Jet of 3C 279",
  "authors": [
    "Wen Hu",
    "Dahai Yan",
    "Benzhong Dai",
    "Wei Zeng",
    "Qianglin Hu"
  ],
  "comment": "18 pages, 12 figures, 3 tables, accepted for publication in MNRAS",
  "categories": [
    "astro-ph.HE",
    "hep-ph"
  ],
  "abstract": "The acceleration of electrons in 3C 279 is investigated through analyzing the injected electron energy distribution (EED) in a time-dependent synchrotron self-Compton + external Compton emission model. In this model, it is assumed that relativistic electrons are continuously injected into the emission region, and the injected EED [$Q_e^\\prime(\\gamma^\\prime)$] follows a single power-law form with low- and high-energy cutoffs $\\rm \\gamma_{min}'$ and $\\rm \\gamma_{max}'$, respectively, and the spectral index $n$, i.e, $Q_e^\\prime(\\gamma^\\prime)\\propto\\gamma^{\\prime-n}$. This model is applied to 14 quasi-simultaneous spectral energy distributions (SEDs) of 3C 279. The Markov Chain Monte Carlo fitting technique is performed to obtain the best-fitting parameters and the uncertainties on the parameters. The results show that the injected EED is well constrained in each state. The value of $n$ is in the range of 2.5 to 3.8, which is larger than that expected by the classic non-relativistic shock acceleration. However, the large value of $n$ can be explained by the relativistic oblique shock acceleration. The flaring activity seems to be related to an increased acceleration efficiency, reflected in an increased $\\gamma'_{\\rm min}$ and electron injection power.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-01-24T06:10:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "relativistic electrons",
      "classic non-relativistic shock acceleration",
      "markov chain monte carlo",
      "relativistic oblique shock acceleration",
      "chain monte carlo fitting technique"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}