X-ray fluctuation timescale and Black Hole mass relation in AGN
نویسندگان
چکیده
منابع مشابه
The scaling of the X–ray variability with black hole mass in AGN
The relation between the 2− 10 keV, long term, excess variance and AGN black hole mass is considered in this work. A significant anti-correlation is found between these two quantities in the sense that the excess variance decreases with increasing black hole mass. This anti-correlation is consistent with the hypothesis that the 2− 10 keV power spectrum in AGN follows a power law of slope −2 at ...
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We discuss the progenitor evolution of high mass black hole binaries with black hole of mass ∼ > 10M⊙, like Cyg X-1. From the observed large space velocity of Cyg X-1, which we interpret as coming from a Blaauw-Boersma kick, we find that the helium envelope of the black hole progenitor must have been at least 16M⊙. Using new and improved wind mass loss rates for Wolf-Rayet stars, we are unable ...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2016
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921317003490