{
  "id": "0912.4229",
  "version": "v1",
  "published": "2009-12-21T18:39:38.000Z",
  "updated": "2009-12-21T18:39:38.000Z",
  "title": "HESS J1507-622: an unique unidentified source off the Galactic Plane",
  "authors": [
    "O. Tibolla",
    "W. Domainko",
    "W. Hofmann",
    "O. de Jager",
    "S. Kaufmann",
    "N. Komin",
    "K. Kosack",
    "for the H. E. S. S. Collaboration"
  ],
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Galactic very high energy (VHE, > 100 GeV) gamma ray sources in the inner Galaxy H.E.S.S. survey tend to cluster within 1 degree in latitude around the Galactic plane. HESS J1507-622 instead is unique, since it is located at latitude of ~3.5 degrees. HESS J1507-622 is slightly extended over the PSF of the instrument and hence its Galactic origin is clear. The search for counterparts in other wavelength regimes (radio, infrared and X-rays) failed to show any plausible counterparts; and given its position off the Galactic plane and hence the absorption almost one order of magnitude lower, it is very surprising to not see any counterparts especially at X-rays wavelengths (by ROSAT, XMM Newton and Chandra). Its latitude implies that it is either rather close, within about 1 kpc, or is located well off the Galactic plane. And also the models reflect the uniqueness of this object: a leptonic PWN scenario would place this source due to its quite small extension to multi-kpc distance whereas a hadronic scenario would preferentially locate this object at distances of < 1 kpc where the density of target material is higher.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-12-21T18:39:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "galactic plane",
      "unique unidentified source",
      "counterparts",
      "leptonic pwn scenario",
      "quite small extension"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 840906,
      "adsabs": "2009arXiv0912.4229T"
    }
  }
}