GCN Circular 7906
Subject
GRB 080625:Swift-XRT detection of the afterglow
Date
2008-06-26T02:25:11Z (16 years ago)
From
Michael Stroh at PSU/Swift <stroh@astroh.org>
M.C. Stroh, C. Pagani and L. Vetere (PSU) report on behalf of the
Swift-XRT team
The Swift-XRT began observations of the SuperAGILE burst GRB 080625
(Pacciani et al., GCN Circ 7903) ~5 hours after the trigger. The data
consist of 3.9 ks observed in Photon Counting mode.
We detect an X-ray counterpart at position: RA, Dec = 298.40420,
56.27747 which is equivalent to:
RA (J2000): 19 53 37.0
Dec (J2000): +56 16 38.9
with an uncertainty of 4 arcsec (radius, 90% confidence). This is
consistent with the UVOT position (Immler, GCN 7905).
We are unable to determine whether the source is decaying at this
time. Observations are continuing and further analysis regarding the
fading nature of this source will be issued as the data become
available.
The spectrum can be fitted with a powerlaw with an intrinsic absorbing
column of (2.5+/-0.9) e21 cm-2 and photon index 2.31+/- 0.17. The
observed (unabsorbed) 0.3-10 keV flux is 2.91 (3.00) e-12 erg cm-2 s-1.
This circular is an official product of the Swift-XRT team.