[AAVSO-HEN] GRB 090118: Swift XRT Observations - Confirmation of an Afterglow

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  8840
SUBJECT: GRB 090118: Swift XRT Observations - Confirmation of an Afterglow
DATE:    09/01/22 20:14:14 GMT
FROM:    Antonia Rowlinson at U.of Leicester  <bar7 at star.le.ac.uk>

B.A. Rowlinson and K.L. Page (U. Leicester) report of behalf of the
Swift-XRT team:

Swift-XRT completed a 10ks follow-up ToO obsevation of GRB 090118
(Copete et al. GCN Circ. 8825) approximately 250ks after the burst.
These observations confirm the previous Swift-XRT observations
(Rowlinson & Page GCN Circ. 8828) that a fading source has been detected
with a decay slope of alpha=0.61 +/- 0.3. This source is confirmed as
the afterglow.