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GCN Circular 18391

Subject

Swift Trigger 657564: XRT prompt analysis

Date

2015-10-04T20:15:04Z (9 years ago)

From

Claudio Pagani at U of Leicester <cp232@star.le.ac.uk>

C. Pagani (U. Leicester), P. A. Evans (U. Leicester) and S. B. Cenko (GSFC) report on behalf of the Swift-XRT Team:

The XRT began observing the field of the possible GRB 151004A (Swift trigger 657564, Cenko et al., GCN Circ. 18389Not found
 
 
) at 19:09:14.0 UT, 3609.3 seconds after the BAT trigger. No source was detected in 1.1 ks of promptly downlinked data, which covered 84% of the BAT error circle. We are waiting for the full dataset to detect and localise any possible XRT
counterpart.

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