Weighing the black holes in ultraluminous X-ray sources through timing
نویسندگان
چکیده
منابع مشابه
Weighing the black holes in ultraluminous X-ray sources through timing
We describe a new method to estimate the mass of black holes in Ultraluminous X-ray Sources (ULXs). The method is based on the recently discovered “variability plane”, populated by Galactic stellar-mass black-hole candidates (BHCs) and supermassive active galactic nuclei (AGNs), in the parameter space defined by the black-hole mass, accretion rate and characteristic frequency. We apply this met...
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Chandra and XMM−Newton observations of the Cartwheel galaxy show∼ 17 bright X-ray sources ( > ∼ 5× 10 38 erg s), all within the gas-rich outer ring. We explore the hypothesis that these X-ray sources are powered by intermediate-mass black holes (IMBHs) accreting gas or undergoing mass transfer from a stellar companion. To this purpose, we run N -body/SPH simulations of the galaxy interaction wh...
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We have computed models for ultraluminous X-ray sources (“ULXs”) consisting of a black-hole accretor of intermediate mass (“IMBH”; e.g., ∼1000 M⊙) and a captured donor star. For each of four different sets of initial donor masses and orbital separations, we computed 30,000 binary evolution models using a full Henyey stellar evolution code. To our knowledge this is the first time that a populati...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.13372.x