{
  "id": "0909.2585",
  "version": "v1",
  "published": "2009-09-14T15:57:21.000Z",
  "updated": "2009-09-14T15:57:21.000Z",
  "title": "Radio emission and jets from microquasars",
  "authors": [
    "E. Gallo"
  ],
  "comment": "28 pages, 13 figures, To appear in Belloni, T. (ed.): The Jet Paradigm - From Microquasars to Quasars, Lect. Notes Phys. 794 (2009)",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "To some extent, all Galactic binary systems hosting a compact object are potential `microquasars', so much as all galactic nuclei may have been quasars, once upon a time. The necessary ingredients for a compact object of stellar mass to qualify as a microquasar seem to be: accretion, rotation and magnetic field. The presence of a black hole may help, but is not strictly required, since neutron star X-ray binaries and dwarf novae can be powerful jet sources as well. The above issues are broadly discussed throughout this Chapter, with a a rather trivial question in mind: why do we care? In other words: are jets a negligible phenomenon in terms of accretion power, or do they contribute significantly to dissipating gravitational potential energy? How do they influence their surroundings? The latter point is especially relevant in a broader context, as there is mounting evidence that outflows powered by super-massive black holes in external galaxies may play a crucial role in regulating the evolution of cosmic structures. Microquasars can also be thought of as a form of quasars for the impatient: what makes them appealing, despite their low number statistics with respect to quasars, are the fast variability time-scales. In the first approximation, the physics of the jet-accretion coupling in the innermost regions should be set by the mass/size of the accretor: stellar mass objects vary on 10^5-10^8 times shorter time-scales, making it possible to study variable accretion modes and related ejection phenomena over average Ph.D. time-scales. [Abridged]",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-09-14T15:57:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "radio emission",
      "microquasar",
      "compact object",
      "black hole",
      "neutron star x-ray binaries"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1007/978-3-540-76937-8_4",
      "journal": "Lecture Notes in Physics, Berlin Springer Verlag",
      "year": 2010,
      "month": "Mar",
      "volume": 794,
      "pages": 85
    },
    "note": {
      "typesetting": "TeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 831148,
      "adsabs": "2010LNP...794...85G"
    }
  }
}