2003ApJ...584L..43B

Query : 2003ApJ...584L..43B

2003ApJ...584L..43B - Astrophys. J., 584, L43-L46 (2003/February-3)

The unusual optical afterglow of the gamma-ray burst GRB 021004: color changes and short-timescale variability.

BERSIER D., STANEK K.Z., WINN J.N., GRAV T., HOLMAN M.J., MATHESON T., MOCHEJSKA B., STEEGHS D., WALKER A.R., GARNAVICH P.M., QUINN J., JHA S., COOK K.H., CRAIG W.W., MEINTJES P.J. and CALITZ J.J.

Abstract (from CDS):

We report UBVRI observations of the optical afterglow of the gamma-ray burst GRB 021004. We observed significant (∼10%-20%) deviations from a power-law decay on several timescales, ranging from a few hours down to 20-30 minutes. We also observed a significant color change starting ∼1.5 days after the burst, confirming the spectroscopic results already reported by Matheson et al. We discuss these results in the context of several models that have recently been proposed to account for the anomalous photometric behavior of this event.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts

CDS comments: Calibrator for GB 021004 is USNO-A2.0 1050-00134780

Simbad objects: 6

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Number of rows : 6
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 USNO-A2.0 1050-00134780 * 00 26 51.4160810448 +18 54 36.102999816           ~ 1 0
2 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 560 0
3 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 883 1
4 GRB 011211 gB 11 15 16 -21 56.0           ~ 305 0
5 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 499 1
6 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 361 0

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