{
  "id": "1110.5345",
  "version": "v1",
  "published": "2011-10-24T20:18:29.000Z",
  "updated": "2011-10-24T20:18:29.000Z",
  "title": "X-ray emission from massive stars with magnetic fields",
  "authors": [
    "L. M. Oskinova",
    "W. -R. Hamann",
    "J. P. Cassinelli",
    "J. C. Brown",
    "H. Todt"
  ],
  "comment": "Accepted AN. 2011 Potsdam Thinkshop \"Magnetic Fields in Stars and Exoplanets\"",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We investigate the connections between the magnetic fields and the X-ray emission from massive stars. Our study shows that the X-ray properties of known strongly magnetic stars are diverse: while some comply to the predictions of the magnetically confined wind model, others do not. We conclude that strong, hard, and variable X-ray emission may be a sufficient attribute of magnetic massive stars, but it is not a necessary one. We address the general properties of X-ray emission from \"normal\" massive stars, especially the long standing mystery about the correlations between the parameters of X-ray emission and fundamental stellar properties. The recent development in stellar structure modeling shows that small scale surface magnetic fields may be common. We suggest a \"hybrid\" scenario which could explain the X-ray emission from massive stars by a combination of magnetic mechanisms on the surface and shocks in the stellar wind. The magnetic mechanisms and the wind shocks are triggered by convective motions in sub-photospheric layers. This scenario opens the door for a natural explanation of the well established correlation between bolometric and X-ray luminosities.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-10-24T20:18:29.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray emission",
      "massive stars",
      "small scale surface magnetic fields",
      "magnetic mechanisms",
      "fundamental stellar properties"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1002/asna.201111602",
      "journal": "Astronomische Nachrichten",
      "year": 2011,
      "month": "Dec",
      "volume": 332,
      "pages": 988
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 942505,
      "adsabs": "2011AN....332..988O"
    }
  }
}