Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 7707

GRB 080507: Swift XRT analysis confirms the X-ray afterglow
2008-05-11T06:48:03Z (16 years ago)
Valentina La Parola at INAF-IASPA <>
V. Mangano, B. Sbarufatti, V. LaParola, P. Romano (INAF-IASF PA)
and W. H. Baumgartner (GSFC/UMBC)
report on behalf of the Swift-XRT team:

Swift started a second ToO observation of GRB 080507 (Lapshov et al.,
GCN Circ. 7697) on May 9th at 17:24 UT.
We have analyzed the 4 ks PC observation, and found that the brightest
uncatalogued source detected during the previous ToO observation
(Mangano et al., GCN Circ. 7699) has decayed from a rate level of
(1.4 +/- 0.2) e-2 counts s-1 to a level of (2.2 +/- 0.7) e-3 counts s-1.
The second uncatalogued source in the SuperAGILE error circle is
still visible at the constant level of (3.0 +/- 1.0) e-3 counts s-1.

We can confirm that the brightest source detected in Mangano et al.,
GCN Circ. 7699 is the X-ray afterglow of GRB 080507, in agreement with 
the observation reported by Kann et al. (GCN 7705).

This is an official product of the Swift-XRT team
Looking for U.S. government information and services? Visit