GCN Circular 311
Subject
GRB990510: NFI X-ray source
Date
1999-05-10T21:38:12Z (25 years ago)
From
Luigi Piro at IAS/CNR Frascati <piro@alpha1.ias.rm.cnr.it>
Luigi Piro (BeppoSAX Mission Scientist on behalf of the BeppoSAX team) report:
BeppoSAX MAIL n. 99/8: GRB990510: possible X-ray afterglow
A BeppoSAX follow-up of GRB990510 started about 8 hr after the burst.
Preliminary analysis of the first two orbits of the MECS data at SOC shows
a previously unknown strong source in the center of the WFC error circle.
Preliminary coordinates are:
R.A.(2000)= 204.605
DEC(2000)= -80.490
The error radius is 1.5'
Considering its strength, this X-ray source is likely the X-ray
afterglow of GB990510. BeppoSAX is continuing its observation.