2003A&A...411L.315C

Query : 2003A&A...411L.315C

2003A&A...411L.315C - Astronomy and Astrophysics, volume 411L315-319 (2003/11-3)

GRB 030227: The first multiwavelength afterglow of an INTEGRAL GRB.

CASTRO-TIRADO A.J., GOROSABEL J., GUZIY S., REVERTE D., CASTRO CERON J.M., DE UGARTE POSTIGO A., TANVIR N., MEREGHETTI S., TIENGO A., BUCKLE J., SAGAR R., PANDEY S.B., MOHAN V., MASETTI N., MANNUCCI F., FELTZING S., LUNDSTROM I., PEDERSEN H., RIESS C., TRUSHKIN S., VILCHEZ J., LUND N., BRANDT S., MARTINEZ NUNEZ S., REGLERO V., PEREZ-RAMIREZ M.D., KLOSE S., GREINER J., HJORTH J., KAPER L., PIAN E., PALAZZI E., ANDERSEN M.I., FRUCHTER A., FYNBO J.P.U., JENSEN B.L., KOUVELIOTOU C., RHOADS J., ROL E., VREESWIJK P.M., WIJERS R.A.M.J. and VAN DEN HEUVEL E.

Abstract (from CDS):

We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ∼1.7 days after the event. Here we report the discovery of a dim optical afterglow (OA) that would not have been detected by many previous searches due to its faintess (R∼23). This OA was seen to decline following a power law decay with index αR=-0.95±0.16. The spectral index βopt/NIR yielded -1.25±0.14. These values may be explained by a relativistic expansion of a fireball (with p=2.0) in the cooling regime. We also find evidence for inverse Compton scattering in X-rays.

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Journal keyword(s): gamma rays: bursts - techniques: photometric - cosmology: observations

Simbad objects: 8

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Number of rows : 8
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 030227 gB 04 57 32.2 +20 29 54           ~ 75 0
2 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 363 1
3 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 204 1
4 GRB 020331 gB 13 16 09.5 -17 55 16           ~ 40 0
5 GRB 000630 gB 14 47.2 +41 13           ~ 53 1
6 GRB 000926 gB 17 04 15 +51 46.0           ~ 373 0
7 GRB 020322 gB 18 00 48.5 +81 06 13           ~ 44 0
8 GRB 980519 gB 23 22 21.5 +77 15 43           ~ 203 0

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