GCN Circular 44448

A. Ridnaia, D. Frederiks, A. Lysenko, D. Svinkin,
and T. Cline on behalf of the Konus-Wind team,

C. Wang (IHEP), S. Xiong (IHEP), S. Zhang (IHEP),
J. Wei (NAOC),  B. Cordier (CEA) on behalf of the SVOM-GRM team,

and

E. Burns on behalf of the IPN, report:

A bright, short-duration, soft burst was detected by
Konus-Wind and SVOM (GRM) at about 20396 s UT (05:39:56) on May 2.

We have triangulated it to a Konus-GRM annulus centered at
RA(2000)=243.691 deg (16h 14m 46s)  Dec(2000)=-21.870 deg (-21d 52' 12"),
whose radius is 39.329 +/- 0.068 deg (3 sigma).

Among known SGRs, only the position of SGR 1E1841-045 is inside the annulus.
Given the positional coincidence of this burst with
SGR 1E1841-045, its time history, and softness of its spectrum
(as observed by Konus-Wind), we conclude this burst likely originated from SGR 1E1841-045.

A triangulation map is posted at
http://www.ioffe.ru/LEA/SGRs/260502_T20396/IPN/

The time history and spectrum will be given in forthcoming GCN circulars.