{
  "id": "astro-ph/9904349",
  "version": "v1",
  "published": "1999-04-26T06:29:50.000Z",
  "updated": "1999-04-26T06:29:50.000Z",
  "title": "A BeppoSAX observation of the massive X-ray binary 4U1700-37",
  "authors": [
    "A. P. Reynolds",
    "A. Owens",
    "L. Kaper",
    "A. N. Parmar",
    "A. Segreto"
  ],
  "comment": "4 pages. Accepted for publication in A&A",
  "categories": [
    "astro-ph"
  ],
  "abstract": "A 0.5-200 keV BeppoSAX spectrum of the non-pulsating high-mass X-ray binary 4U1700-37 is presented. The spectrum is well characterized by the standard accreting pulsar model of an absorbed power-law with a photon index of 1.07 +0.02 -0.03, sharply modified by an exponential cutoff above 5.9 +/- 0.2 keV. The e-folding energy of the cutoff is 23.9 +/-0.5 keV. A soft bremsstrahlung component with a temperature of 0.2 +/- 0.1 keV is also required, together with a narrow iron line at 6.5 keV. Both continuum components are absorbed by a column of (5.1 +/- 0.2) x 10E22 atom/cm2. There is some evidence for the presence of a broad cyclotron absorption feature at ~37 keV, although we cannot exclude the possibility that this is due to an incorrect modeling of the continuum, or instrumental effects. The hypothesis that the compact object is a neutron star rather than a black hole seems most likely.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-04-26T06:29:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "massive x-ray binary",
      "bepposax observation",
      "broad cyclotron absorption feature",
      "standard accreting pulsar model",
      "kev bepposax spectrum"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 498831
    }
  }
}