{
  "id": "1010.4167",
  "version": "v1",
  "published": "2010-10-20T11:49:23.000Z",
  "updated": "2010-10-20T11:49:23.000Z",
  "title": "X-ray pulsations from the radio-quiet gamma-ray pulsar in CTA 1",
  "authors": [
    "P. A. Caraveo",
    "A. De Luca",
    "M. Marelli",
    "G. F. Bignami",
    "P. S. Ray",
    "P. M. Saz-Parkinson",
    "G. Kanbach"
  ],
  "comment": "19 pages, 4 figures. Accepted for publication in ApJ Letters",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Prompted by the Fermi LAT discovery of a radio-quiet gamma-ray pulsar inside the CTA 1 supernova remnant, we obtained a 130 ks XMM-Newton observation to assess the timing behavior of this pulsar. Exploiting both the unprecedented photon harvest and the contemporary Fermi LAT timing measurements, a 4.7 sigma single peak pulsation is detected, making PSR J0007+7303 the second example, after Geminga, of a radio-quiet gamma-ray pulsar also seen to pulsate in X-rays. Phase-resolved spectroscopy shows that the off-pulse portion of the light curve is dominated by a power-law, non-thermal spectrum, while the X-ray peak emission appears to be mainly of thermal origin, probably from a polar cap heated by magnetospheric return currents, pointing to a hot spot varying throughout the pulsar rotation.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-10-20T11:49:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray pulsations",
      "sigma single peak pulsation",
      "contemporary fermi lat timing measurements",
      "x-ray peak emission appears",
      "radio-quiet gamma-ray pulsar inside"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/2041-8205/725/1/L6",
      "journal": "The Astrophysical Journal",
      "year": 2010,
      "month": "Dec",
      "volume": 725,
      "number": 1
    },
    "note": {
      "typesetting": "TeX",
      "pages": 19,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 873513,
      "adsabs": "2010ApJ...725L...6C"
    }
  }
}