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

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

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)415-418
ページ数4
ジャーナルEuropean Space Agency, (Special Publication) ESA SP
459
出版ステータスPublished - 2001 9 1
外部発表はい
イベント4th Integral Workshop -Exploring the Gamma-Ray Universe-2000 - Alicante, Spain
継続期間: 2000 9 42000 9 8

ASJC Scopus subject areas

  • 航空宇宙工学
  • 宇宙惑星科学

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