2013ApJ...767L..36W

Query : 2013ApJ...767L..36W

2013ApJ...767L..36W - Astrophys. J., 767, L36 (2013/April-3)

Giant X-ray bump in GRB 121027A: evidence for fall-back disk accretion.

WU X.-F., HOU S.-J. and LEI W.-H.

Abstract (from CDS):

A particularly interesting discovery in observations of GRB 121027A is that of a giant X-ray bump detected by the Swift/X-Ray Telescope. The X-ray afterglow re-brightens sharply at ∼103 s after the trigger by more than two orders of magnitude in less than 200 s. This X-ray bump lasts for more than 104 s. It is quite different from typical X-ray flares. In this Letter we propose a fall-back accretion model to interpret this X-ray bump within the context of the collapse of a massive star for a long-duration gamma-ray burst. The required fall-back radius of ∼3.5x1010 cm and mass of ∼0.9-2.6 M☉ imply that a significant part of the helium envelope should survive through the mass loss during the last stage of the massive progenitor of GRB 121027A.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - black hole physics - gamma-ray burst: individual: GRB 121027A - magnetic fields

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 GRB 121027A gB 04 14 23.450 -58 49 47.17           ~ 136 0

Query : 2013ApJ...767L..36W

Basic data :
GRB 121027A -- Gamma-ray Burst
Other object types: otypes_help 		gB (GRB)
ICRS coord. (ep=J2000) : 		04 14 23.450 -58 49 47.17 [ ] D 2013A&A...552A.143S
FK4 coord. (ep=B1950 eq=1950) : 		04 13 28.806 -58 57 14.84 [ ]
Gal coord. (ep=J2000) : 		269.720747 -42.974987 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 230792 [~] / z(~) 1.773 [~] / cz 531532 [~]
   D 2013ApJ...768...23W
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Identifiers (1) :
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GRB 121027A

References (136 between 1850 and 2026) (Total 136)
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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