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Face-on SS 433 stars as a possible new type of extragalactic X-ray sourcesстатья
- Авторы: Fabrika S., Mescheryakov A.
- Сборник: Galaxies and their Constituents at the Highest Angular Resolutions, Proceedings of IAU Symposium #205, held 15-18 August 2000 at Manchester, United Kingdom. Edited by R. T. Schilizzi, 2001
- Серия: ASP Publication
- Год издания: 2001
- Первая страница: 268
- Аннотация: The SS433 objects is a well-known source of relativistic jets, which are formed in supercritical accretion disk. It is very probable that the disk has polar channels and their radiation is collimated (the photocones). The face-on SS433 object can appear as extremely bright (and highly variable) X-ray source, Lx ~ 1040 - 1042 erg/s. We discuss properties of these hypothetical objects as X-ray sources and their frequency expected in galaxies. We describe a search for such objects using the ROSAT Bright Source Catalog (18811 sources) and the RC3 catalog (about 19000 spiral and Irr galaxies). Among 246 X-ray sources associated with the galaxies, 115 sources were not confirmed as AGNs previously, and 44 of them are point-like. Among them 11 X-ray sources are certainly non-nuclear, their luminosities are 1039 - 1043 erg/s. We discuss properties of the X-ray sources isolated and futher observational steps to recognize the population of "face-on SS433 stars". Considering the sources frequency as depending on galaxy distances to estimate possible observational selections, we find that the frequency of galaxies containing such sources is about 0.5 - 1 %.
- Добавил в систему: Мещеряков Александр Валерьевич