Accretion Disk Spectra of the Ultra-luminous Compact X-ray Sources in Nearby Galaxies and the Super-luminal Jet Sources

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dc.creatorEbisawa, Ken
dc.creatorKubota, Aya
dc.creatorMizuno, Tsunefumi
dc.creatorZycki, Piotr
dc.date2001-06-03
dc.date.accessioned2026-07-25T18:09:21Z
dc.descriptionThe 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.
dc.descriptionContribution to the 4th INTEGRAL Workshop (2000 September, Alicante, Spain)
dc.identifierhttps://arxiv.org/abs/astro-ph/0106034
dc.identifierhttp://arxiv.org/abs/astro-ph/0106034
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/53933
dc.subjectAstrophysics
dc.titleAccretion Disk Spectra of the Ultra-luminous Compact X-ray Sources in Nearby Galaxies and the Super-luminal Jet Sources
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