Photometric study of the improved GRB 970815 error box

Gorosabel, J.; Castro-Tirado, A. J.; Benítez, N.; Zapatero-Osorio, M. R.; Campos, A.; Trapero, J.; Sánchez, E.; Metcalfe, N.
Referencia bibliográfica

GAMMA-RAY BURSTS: 5th Huntsville Symposium. AIP Conference Proceedings, Volume 526, pp. 334-338 (2000).

Fecha de publicación:
9
2000
Número de autores
8
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
An improved error box of GRB 970815 has been reported very recently (Smith et al.1999). This error box is consistent with the decaying X-ray source detected by ROSAT, which strongly supports the source as the GRB X-ray afterglow. We report a re-analysis of the follow up observations performed in 1997 containing the improved RXTE error box. No variable optical/IR source has been found neither within the entire RXTE error box nor within the ROSAT and ASCA X-ray circles. Upper limits for any transient object are K'>=18 (Aug 17 1997), B>=21.5, R>=22 (20 Aug 1997), B>=22.5 and R>=23 (23 Aug 1997). Also we report additional BVRI optical observations performed in 1999 of the ROSAT X-ray source aimed to detect the host galaxy of GRB 970815. .