Ultraluminous X-Ray Sources
| Autor: | S. Fabrika, K. Atapin, O. N. Sholukhova, Alexander Vinokurov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences 03 medical and health sciences symbols.namesake 0302 clinical medicine Accretion disc Observatory 030225 pediatrics 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Spectroscopy 010303 astronomy & astrophysics Instrumentation Astrophysics::Galaxy Astrophysics Physics Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Accretion (astrophysics) Black hole Neutron star Astrophysics of Galaxies (astro-ph.GA) Eddington luminosity symbols |
| Zdroj: | Astrophysical Bulletin. 76:6-38 |
| ISSN: | 1990-3421 1990-3413 |
| Popis: | Ultraluminous X-ray sources (ULXs) were identified as a separate class of objects in 2000 based on data from the Chandra X-Ray Observatory. These are unique objects: their X-ray luminosities exceed the Eddington limit for a typical stellar-mass black hole. For a long time, the nature of ULXs remained unclear. However, the gradual accumulation of data, new results of X-ray and optical spectroscopy, and the study of the structure and energy of nebulae surrounding ULXs led to the understanding that most of the ultraluminous X-ray sources must be supercritical accretion disks like SS 433. The discovery of neutron stars in a number of objects only increased the confidence of the scientific community in the conclusions obtained, since the presence of neutron stars in such systems clearly indicates a supercritical accretion regime. In this review, we systematize the main facts about the observational manifestations of ULXs and SS 433 in the X-ray and optical ranges and discuss their explanation from the point of view of the supercritical accretion theory. 32 pages, 21 figures, 1 table |
| Databáze: | OpenAIRE |
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