[AAVSO-HEN] GRB 091003: Swift-XRT confirmation of fading afterglow

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
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TITLE:   GCN CIRCULAR
NUMBER:  9991
SUBJECT: GRB 091003: Swift-XRT confirmation of fading afterglow
DATE:    09/10/05 07:59:40 GMT
FROM:    Kim Page at U.of Leicester  <kpa at star.le.ac.uk>

K.L. Page, R.L.C. Starling, P.A. Evans & A.P. Beardmore (U. Leicester) 
report on behalf of the Swift-XRT team:

We have now collected 15 ks of Swift-XRT Photon Counting mode data on the 
Fermi burst GRB 091003 (Rau, GCN Circ. 9983; McEnery, Chiang & Hanabata, 
GCN Circ. 9985), between 56 and 168 ks after the trigger. The light-curve 
is fading, with alpha = 1.02 +0.21/-0.20. We therefore confirm that the 
source given by Starling et al. in GCN Circ. 9986 and 9988 is, indeed, the 
X-ray afterglow.

This circular is an official product of the Swift-XRT team.