SIMBAD references

1999A&AS..138..463P - Astron. Astrophys., Suppl. Ser., 138, 463-464 (1999/September-0)

BeppoSAX detection and follow-up of GRB 980425.

PIAN E., AMATI L., ANTONELLI L.A., BUTLER R.C., COSTA E., CUSUMANO G., DANZIGER J., FEROCI M., FIORE F., FRONTERA F., GIOMMI P., MASETTI N., MULLER J.M., OOSTERBROEK T., OWENS A., PALAZZI E., PIRO L., CASTRO-TIRADO A., COLETTA A., DAL FIUME D., DEL SORDO S., HEISE J., NICASTRO L., ORLANDINI M., PARMAR A., SOFFITTA P., TORRONI V. and IN'T ZAND J.J.M.

Abstract (from CDS):

We present BeppoSAX GRBM and WFC light curves of GRB 980425 and NFI follow-up data taken in 1998 April, May, and November. The first NFI observation has detected within the 8' radius error box of the GRB an X-ray source positionally consistent with the supernova SN 1998bw, exploded within a day of GRB 980425, and a fainter X-ray source, not consistent with the position of the supernova. The former source is detected in the following NFI pointings and exhibits a decline of a factor of two in six months. If it is associated with SN 1998bw, this is the first detection of hard X-ray emission from a Type I supernova. The latter source exhibits only marginally significant variability. Based on these data, it is not possible to select either source as a firm candidate for the GRB counterpart.

Abstract Copyright:

Journal keyword(s): gamma-rays: bursts

Nomenclature: [PAA99] SN (Nos S1-S2).

Simbad objects: 5

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