SIMBAD references

2015ApJ...805L..19E - Astrophys. J., 805, L19 (2015/June-1)

Ultra-close encounters of stars with massive black holes: tidal disruption events with prompt hyperaccretion.

EVANS C., LAGUNA P. and ERACLEOUS M.

Abstract (from CDS):

A bright flare from a galactic nucleus followed at late times by a t–5/3 decay in luminosity is often considered the signature of the complete tidal disruption of a star by a massive black hole. The flare and power-law decay are produced when the stream of bound debris returns to the black hole, self-intersects, and eventually forms an accretion disk or torus. In the canonical scenario of a solar-type star disrupted by a 106 black hole, the time between the disruption of the star and the formation of the accretion torus could be years. We present fully general relativistic simulations of a new class of tidal disruption events involving ultra-close encounters of solar-type stars with intermediate mass black holes. In these encounters, a thick disk forms promptly after disruption, on timescales of hours. After a brief initial flare, the accretion rate remains steady and highly super-Eddington for a few days at ∼ 102 M☉/yr.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - stars: black holes

Simbad objects: 1

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