We study mechanism of formation of black holes (BHs) from collisions of particles in the vicinity of the supermassive black hole acting as a particle accelerator trough BSW (Banados-Silk-West) effect. Moreover, we also investigate BH-BH collision, in which stellar black holes colliding near ...
The origin of the supermassive black holes that inhabit the centres of massive galaxies remains unclear1,2. Direct-collapse black holes—remnants of supermassive stars, with masses around 10,000 times that of the Sun—are ideal seed candidates3,4,5,6. However, their very existence and their ...
Once formed, they possess a gravitational field so strong that not even light can escape, leading to the term "black hole". In this paper, we will explore the formation of black holes, their properties, and their effects on the universe. Introduction:The concept of a black hole was first...
The appearance of supermassive black holes at very early times1–3 in the Universe is a challenge to our understanding of star and black hole formation. The direct-collapse4,5 black hole scenario provides a potential solution. A prerequisite for forming a direct-collapse black hole is that the...
The observations suggest that high-mass stellar black holes may form promptly, when massive stars disappear silently.MirabelI.FelixRodriguesIrapuanEBSCO_AspScienceMirabel, I.F., Rodrigues, I., 2003. Formation of a black hole in the dark. Science 300, 1119-1120.Mirabel and Rodrigues, 2003] ...
It is based on the Lematre–Tolman solution and is a refinement of an earlier model. The most important improvement is the choice of the interior geometry of the black hole allowing for the formation of Gyrs old black holes. Other refinements are the use of an arbitrary Friedmann model as...
The properties of theX-ray source are best explained by a black hole with a mass of at least350Msun, which is intermediate between stellar-mass and supermassive blackholes. A nearby but somewhat more massive star cluster (MGG-9) shows noevidence of such an intermediate mass black hole, ...
These are exciting times for binary black holes (BBHs). LIGO and Virgo detections are progressively drawing a spectacular fresco of BBH masses, spins, and merger rates. In this review, we discuss the main formation channels of BBHs from stellar evolution
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