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- Title
Evidence for a binary black hole in active nucleus of NGC 1194 galaxy?
- Authors
Vasylenko, A.; Fedorova, E.; Hnatyk, B.; Zhdanov, V.
- Abstract
Based on the data obtained with the XMM-Newton and INTEGRAL space telescopes, some properties of the X-ray emission from active nucleus of NGC 1194 galaxy are analyzed. Particular attention is paid to the X-ray energy spectrum from 6 to 7.5 keV. In this case, besides Fe K (6.38 keV) and Fe K (7.01 keV) fluorescent lines, an additional line with an energy of 6.51 keV was found with a rather broad profile generated in an inclined accretion disk, which is characteristic for the Fe K relativistic line. Such a line configuration can be explained within the model of binary black hole system in the nucleus of NGC 1194 with orbital period of the order of 6 years. The energies and profiles of the iron Fe K spectral lines correspond to the radiation of accretion disks around the Schwazschild black holes with inclination angles of 6-20 degrees between the line of sight and the normal to the disk. To make final conclusions about the line structure and the presence or absence of a binary black hole in the nucleus of NGC 1194, it is necessary to perform additional observations.
- Subjects
BINARY black holes; X-ray emission spectroscopy; RADIATION; SPACE telescopes; FLUORESCENCE
- Publication
Kinematics & Physics of Celestial Bodies, 2015, Vol 31, Issue 1, p13
- ISSN
0884-5913
- Publication type
Article
- DOI
10.3103/S0884591315010079