TITLE:   GCN CIRCULAR
NUMBER:  42495
SUBJECT: SVOM trigger sb25102702/GRB 251027A is not a GRB
DATE:    25/10/28 00:05:44 GMT
FROM:    SVOM_group <svomgroup@bao.ac.cn>

Y. H.Cheng (YNU), Y. F. Liang (PMO), M. Brunet (IRAP), D. Turpin (CEA), report on behalf of the SVOM mission team:

At 2025-10-27T09:38:17 SVOM issued an alert with burst-id: sb25102702.

The following circular(s) have been published regarding this event: GCN 42471, 42480, 42481, 42486.

After reprocessing the data with the full telemetry, this trigger is no longer considered as an astrophysical source but is due to coding noise from the Crab in the field of view.

We apologize for any inconvenience this may have caused.

The Burst Advocate (BA) on shift for this alert is Yehao Cheng: yhcheng@mail.ynu.edu.cn.
Please contact the BA by email if you require additional information.