2011ApJ...743..134K

Query : 2011ApJ...743..134K

2011ApJ...743..134K - Astrophys. J., 743, 134 (2011/December-3)

Swift J1644+57: a white dwarf tidally disrupted by a 104 M☉Black hole?

KROLIK J.H. and PIRAN T.

Abstract (from CDS):

We propose that the remarkable object Swift J1644+57, in which multiple recurring hard X-ray flares were seen over a span of several days, is a system in which a white dwarf was tidally disrupted by an intermediate-mass black hole. Disruption of a white dwarf rather than a main-sequence star offers a number of advantages in understanding the multiple, and short, timescales seen in the light curve of this system. In particular, the short internal dynamical timescale of a white dwarf offers a more natural way of understanding the short rise times (∼100 s) observed. The relatively long intervals between flares (∼5x104 s) may also be readily understood as the period between successive pericenter passages of the remnant white dwarf. In addition, the expected jet power is larger when a white dwarf is disrupted. If this model is correct, the black hole responsible must have a mass ≲ 105 M☉.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - black hole physics - galaxies: nuclei - white dwarfs

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 : 2011ApJ...743..134K

Basic data :
SWIFT J164449.3+573451 -- Galaxy
Other object types: otypes_help 		X (2MAXI,SWIFT,...), G (2011ApJ), gB (GRB), MIR (WISE), Opt (PSO)
ICRS coord. (ep=J2000) : 		16 44 47.81184000 +57 35 00.7113480 (Optical) [ 44.7 79.8 90 ] C 2017yCat.2349....0C
FK4 coord. (ep=B1950 eq=1950) : 		16 43 53.72792830 +57 40 25.4402620 [ 44.7 79.8 90 ]
Gal coord. (ep=J2000) : 		086.71278295763 +39.44581128471 [ 44.7 79.8 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 87971 [~] / z(~) 0.353 [~] / cz 105827 [~]
   D 2011ApJ...734L..33S
Fluxes (2) :
i (AB) 21.3036 [0.0988] C 2017yCat.2349....0C
z (AB) 20.8828 [0.0344] C 2017yCat.2349....0C
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Identifiers (7) :
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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)
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Observing logs

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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

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WISE J164447.82+573500.7

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