{
  "id": "2211.08816",
  "version": "v1",
  "published": "2022-11-16T10:20:42.000Z",
  "updated": "2022-11-16T10:20:42.000Z",
  "title": "Discovery of GeV gamma-ray emission from PWN Kes 75 and PSR J1846-0258",
  "authors": [
    "Samayra M. Straal",
    "Joseph D. Gelfand",
    "Jordan L. Eagle"
  ],
  "comment": "Accepted for publication in ApJ. 10 pages, 5 figures, 2 tables",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We report the detection of gamma-ray emission from PWN Kes 75 and PSR J1846-0258. Through modeling the spectral energy distribution incorporating the new Fermi-LAT data, we find the the observed gamma-ray emission is likely a combination of both the PWN and pulsar magnetosphere. The spectral shape of this magnetospheric emission is similar to the gamma-ray spectrum of rotation powered pulsars detected by Fermi-LAT and the results from our best-fit model suggest the pulsar's magnetospheric emission accounts for 1% of the current spin-down luminosity. Prior works attempted to characterize the properties of this system and found a low supernova explosion energy and low SN ejecta mass. We re-analyze the broadband emission incorporating the new Fermi emission and compare the implications of our results to prior reports. The best-fit gamma-ray emission model suggests a second very hot photon field possibly generated by the stellar wind of a Wolf-Rayet star embedded within the nebula, which supports the low ejecta mass found for the progenitor in prior reports and here in the scenario of binary mass transfer.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-11-16T10:20:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gev gamma-ray emission",
      "pwn kes",
      "photon field possibly",
      "best-fit gamma-ray emission model",
      "prior reports"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}