TITLE:   GCN CIRCULAR
NUMBER:  8324
SUBJECT: GRB 081003B: Swift-XRT upper limit 
DATE:    08/10/04 19:23:35 GMT
FROM:    Kim Page at U.of Leicester  <kpa@star.le.ac.uk>

K.L. Page (U. Leicester) & C.B. Markwardt (CRESST/GSFC/UMD) report on 
behalf of the Swift-XRT team:

Swift-XRT performed a Target of Opportunity observation of the INTEGRAL 
GRB 081003B (Gotz et al., GCN Circ. 8317), starting ~29 ks after the 
trigger. No source is detected within or near to the INTEGRAL error circle 
during a 3.6 ks Photon Counting mode observation. The 3-sigma upper limit 
on the count rate is 0.002 count s^-1, corresponding to an approximate 
observed 0.3-10 keV flux of 1x10^-13 erg cm^-2 s^-1 (using a standard 
counts to flux conversion factor).

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