2010ApJ...719L..10B

Query : 2010ApJ...719L..10B

2010ApJ...719L..10B - Astrophys. J., 719, L10-L14 (2010/August-2)

Fast optical variability of a naked-eye Burst–Manifestation of the periodic activity of an internal engine.

BESKIN G., KARPOV S., BONDAR S., GRECO G., GUARNIERI A., BARTOLINI C. and PICCIONI A.

Abstract (from CDS):

We imaged the position of the naked-eye burst, GRB080319B, before, during, and after its gamma-ray activity with sub-second temporal resolution using the TORTORA wide-field camera. The burst optical prompt emission, which reached 5.3 mag, has been detected, and its periodic optical variability has been discovered in the form of four equidistant flashes with a duration of several seconds. We also detected a strong correlation (r ≈ 0.82) between optical and gamma-ray light curves with a 2 s delay of the optical emission with respect to the gamma-ray emission. The revealed temporal structure of the optical light curve in comparison with the gamma-ray light curve can be interpreted in the framework of the model of shell collisions in the ejecta containing a significant neutron component. All observed emission features reflect the non-stationary behavior of the burst internal engine–supposedly, a hyperaccreting solar-mass black hole formed in the collapse of a massive stellar core.

Abstract Copyright: ∼

Journal keyword(s): gamma-ray burst: individual: GRB 080319B

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 080319B gB 14 31 41.04 +36 18 09.2           ~ 508 0

Query : 2010ApJ...719L..10B

Basic data :
GRB 080319B -- Gamma-ray Burst
Other object types: otypes_help 		gB (GRB)
ICRS coord. (ep=J2000) : 		14 31 41.04 +36 18 09.2 (X-ray) [ 1400 1400 90 ] D 2009MNRAS.397.1177E
FK4 coord. (ep=B1950 eq=1950) : 		14 29 37.38 +36 31 22.4 [ 1400 1400 90 ]
Gal coord. (ep=J2000) : 		062.54568 +66.87963 [ 1400 1400 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 173740 [~] / z(~) 0.9382 [~] / cz 281265 [~]
   D 2009ApJS..185..526F
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Identifiers (1) :
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GRB 080319B

References (508 between 1850 and 2026) (Total 508)
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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