Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources

K. Ebisawa, Aya Kubota, T. Mizuno, P. Zycki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The Ultra-luminous Compact X-ray Sources (ULXs) in nearby spiral galaxies and the Galactic super-luminal jet sources share the common spectral characteristic that they have extremely high disk temperatures which cannot be explained in the framework of the standard accretion disk model in the Schwarzschild metric. We examine several possibilities to solve this "too-hot" disk problem. In particular, we have calculated an extreme Kerr disk model to fit the observed spectra. We found that the Kerr disk will become significantly harder compared to the Schwarzschild disk only when the disk is highly inclined. For super-luminal jet sources, which are known to be inclined systems, the Kerr disk model may work if we choose proper values for the black hole angular momentum. For the ULXs, however, the Kerr disk interpretation will be problematic, as it is highly unlikely that their accretion disks are preferentially inclined.

Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
Pages415-418
Number of pages4
Edition459
Publication statusPublished - 2001 Sep
Externally publishedYes
Event4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 - Alicante, Spain
Duration: 2000 Sep 42000 Sep 8

Other

Other4th Integral Workshop -Exploring the Gamma-Ray Universe-2000
CountrySpain
CityAlicante
Period00/9/400/9/8

Fingerprint

Galaxies
X rays
Angular momentum
Temperature

Keywords

  • Accretion disks
  • Black holes
  • Super-luminal jet sources
  • Ultra-luminous X-ray sources

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Ebisawa, K., Kubota, A., Mizuno, T., & Zycki, P. (2001). Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources. In European Space Agency, (Special Publication) ESA SP (459 ed., pp. 415-418)

Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources. / Ebisawa, K.; Kubota, Aya; Mizuno, T.; Zycki, P.

European Space Agency, (Special Publication) ESA SP. 459. ed. 2001. p. 415-418.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ebisawa, K, Kubota, A, Mizuno, T & Zycki, P 2001, Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources. in European Space Agency, (Special Publication) ESA SP. 459 edn, pp. 415-418, 4th Integral Workshop -Exploring the Gamma-Ray Universe-2000, Alicante, Spain, 00/9/4.
Ebisawa K, Kubota A, Mizuno T, Zycki P. Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources. In European Space Agency, (Special Publication) ESA SP. 459 ed. 2001. p. 415-418
Ebisawa, K. ; Kubota, Aya ; Mizuno, T. ; Zycki, P. / Accretion disk spectra of the ultra-luminous compact X-ray sources in nearby spiral galaxies and the super-luminal jet sources. European Space Agency, (Special Publication) ESA SP. 459. ed. 2001. pp. 415-418
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