SIMBAD references

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