2015ApJ...805L..19E

Query : 2015ApJ...805L..19E

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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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	SWIFT J164449.3+573451	G	16 44 47.81184000	+57 35 00.7113480						~	533	0

Query : 2015ApJ...805L..19E

Basic data :

SWIFT J164449.3+573451 -- Galaxy

X (2MAXI,SWIFT,...), G (2011ApJ), gB (GRB), MIR (WISE), Opt (PSO)

16 44 47.81184000 +57 35 00.7113480 (Optical) [ 44.7 79.8 90 ] C 2017yCat.2349....0C

16 43 53.72792830 +57 40 25.4402620 [ 44.7 79.8 90 ]

086.71278295763 +39.44581128471 [ 44.7 79.8 90 ]

V(km/s) 87971 [~] / z(~) 0.353 [~] / cz 105827 [~] D 2011ApJ...734L..33S

i (AB) 21.3036 [0.0988] C 2017yCat.2349....0C

z (AB) 20.8828 [0.0344] C 2017yCat.2349....0C

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`NAME Swift J1644+57`	`2MAXI J1645+576`	`SWIFT J164449.3+573451`	`WISE J164447.82+573500.7`
`GRB 110328A`	`PSO J251.1992+57.5835`	`2SXPS J164449.8+573459`

References (533 between 1850 and 2026) (Total 533)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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WISE J164447.82+573500.7

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