Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008uvun.conf..218f&link_type=abstract
"Ultraviolet Universe II, Proceedings of the All-Russian Conference "UV Universe-2008" May 19-20, 2008, Moscow, Russia, Shustov,
Physics
Scientific paper
We discuss a new type of X-ray sources discovered in galaxies -- ultraluminous X-ray sources (ULXs). They are of two order of magnitude brighter in X-rays than the brightest Galactic black holes. Two mod- els of ULXs are discussed: "intermediate mass" black holes, 100 - 10000 solar masses, with standard accretion disks, and "stellar mass" black holes with su- percritical accretion disks like that in the Galactic object SS 433. A study of gas nebulae surrounding these objects gives us a new important information on the central sources. The observed X-ray radiation of ULXs is not enough to power their nebulae. To understand both spectra and power of the nebulae one needs a powerful UV source. The ULXs must be such bright in UV range as they are in X-rays. Spectroscopy of gas filaments surrounding SS 433 proves that the intrinsic face-on luminosity of the supercritical accretion disk in the far UV region to be "sim; 10^40 erg/s. We expect that observations of ULXs with the WSO-UV Observatory, measurements their UV fluxes and spectral slopes solve the problem of ULXs between the two known models of these sources.
Abolmasov Pavel
Fabrika Sergei
Sholukhova Olga
No associations
LandOfFree
Ultraluminous X-ray Sources. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ultraluminous X-ray Sources., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraluminous X-ray Sources. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-796997