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31.
G. A. Khorunzhev S. Yu. Sazonov R. A. Burenin A. Yu. Tkachenko 《Astronomy Letters》2012,38(8):475-491
The masses of 68 supermassive black holes (SMBHs) in nearby (z < 0.15) active galactic nuclei (AGNs) detected by the INTEGRAL observatory in the hard X-ray energy band (17?C60 keV) outside the Galactic plane (|b| 5°) have been estimated. Well-known relations between the SMBHmass and (1) the infrared luminosity of the stellar bulge (from 2MASS data) and (2) the characteristics of broad emission lines (from RTT-150 data) have been used. A comparison with the more accurate SMBH mass estimates obtained by the reverberation-mapping technique and from direct dynamical measurements is also made for several objects. The SMBH masses derived from the correlation with the bulge luminosity turn out to be systematically higher than the estimates made by other methods. The ratio of the bolometric luminosity to the critical Eddington luminosity has been found for all AGNs. It ranges from 1 to 100% for the overwhelming majority of objects. 相似文献
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A. A. Lutovinov R. A. Burenin M.G. Revnivtsev V. F. Suleimanov A. Yu. Tkachenko 《Astronomy Letters》2010,36(12):904-909
We present the results of our optical identification of the X-ray source IGR J16547-1916 detected by the INTEGRAL observatory
during a deep all-sky survey. Analysis of the spectroscopic data from the SWIFT and INTEGRAL observatories in the X-ray energy
band and from the BTA (Special Astrophysical Observatory) telescope in the optical band has shown that the source is most
likely an intermediate polar—an accreting white dwarf with the mass ofM
WD μ 0.85M
⊙ binary system. Subsequent studies of the object’s rapid variability with the RTT-150 telescope have confirmed this conclusion
by revealing periodic pulsations of its optical emission with a period of ≈550 s. 相似文献