CDF-S XT1 and XT2: White Dwarf Tidal Disruption Events by Intermediate-mass Black Holes?
نویسندگان
چکیده
منابع مشابه
Tidal Capture of Stars by Intermediate-Mass Black Holes
Recent X-ray observations and theoretical modelling have made it plausible that some ultraluminous X-ray sources (ULX) are powered by intermediate-mass black holes (IMBHs). N-body simulations have also shown that runaway merging of stars in dense star clusters is a way to form IMBHs. In the present paper we have performed N -body simulations of young clusters such as MGG-11 of M82 in which IMBH...
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We present a numerical investigation of the tidal disruption of white dwarfs by moderately massive black holes, with particular reference to the centers of dwarf galaxies and globular clusters. Special attention is given to the fate of white dwarfs of all masses that approach the black hole close enough to be disrupted and severely compressed to such extent that explosive nuclear burning can be...
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Intermediate Mass Black Holes (IMBHs; 10 M⊙) are thought to form as relics of Population III stars or from the runaway collapse of stars in young clusters; their number and very existence are uncertain. We ran N-body simulations of Galactic IMBHs, modeling them as a halo population distributed according to a Navarro, Frenk & White (NFW; 1996) or a more concentrated Diemand, Madau & Moore (DMM; ...
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Observational searches for Intermediate-Mass Black Holes (IMBHs), defined to have masses between 30 and 300,000 solar masses, provide limits which allow up to ten percent of what is presently identified as halo dark matter to be in the form of IMBHs. These concentrate entropy so efficiently that the halo contribution can be bigger than the core supermassive black hole. Formation of IMBHs is bri...
متن کاملTidal dissipation and evolution of white dwarfs around massive black holes: an eccentric path to tidal disruption
Awhite dwarf (WD) captured into a high-eccentricity orbit around amassive black hole (MBH) may undergo many pericentre passages before tidal disruption. During these passages, the tidal potential of the MBH excites internal oscillations or waves in the WD, and the dissipation of these oscillations can significantly influence the physical properties of the WD prior to its disruption. We calculat...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2019
ISSN: 2041-8213
DOI: 10.3847/2041-8213/ab481b