A Soft Gamma Repeater burst from CXOU J164710.2-455216/PSR J1647-4552

ATel #17311; David M. Palmer on behalf of the Swift Team
on 27 Jul 2025; 00:04 UT
Credential Certification: David M. Palmer (palmer@lanl.gov)

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As reported in GCN #41172 (Dichiara et al.), Swift/BAT has detected a short burst from the Soft Gamma Repeater (SGR) CXOU J164710.2-455216 == PSR J1647-4552 at 2025-07-26 22:49:05 UTC

The catalog of bursts from this source as detected by BAT is listed below.
2006-09-21 01:34:51
2011-09-19 21:16:11
2011-09-19 21:25:44
2017-05-16 07:09:02
2017-10-19 04:48:48
2017-10-19 05:20:39
2017-10-19 09:58:13
2018-02-05 19:25:19
2018-02-05 19:25:46
2018-02-05 19:27:11
2018-08-23 04:57:27
2020-02-06 16:40:26
2025-07-26 22:49:05

BAT's livetime and FOV coverage implies a ~10% completeness in time for any random point in the sky, so many additional bursts (e.g. ATel #11270, Savchenko et al., for 3 bursts on 2018-02-06) are not detected by BAT.