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GCN Circular 34977

Subject
GRB 231110A: Swift detection of a burst
Date
2023-11-10T21:35:09Z (4 months ago)
From
Jamie Kennea at Penn State <jak51@psu.edu>
Via
email

V. D'Elia (SSDC & INAF-OAR), E. Ambrosi (INAF-IASFPA),
A. D'Ai (INAF-IASFPA), S. Dichiara (PSU), J.D. Gropp (PSU),
J. A. Kennea (PSU), A. Melandri (INAF-OAR) and M. A. Williams (PSU)
report on behalf of the Neil Gehrels Swift Observatory Team:

At 21:19:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 231110A (trigger=1195733).  Swift did not slew immediately 
to the burst due to an observing constraint. 
The BAT on-board calculated location is 
RA, Dec 356.296, +82.621 which is 
   RA(J2000) = 23h 45m 11s
   Dec(J2000) = +82d 37' 16"
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  The BAT light curve showed a single-peaked
structure with a duration of about 20 sec.  The peak count rate
was ~2800 counts/sec (15-350 keV), at ~1 sec after the trigger. 

Due to an observing constraint, Swift will not slew until T0+50.7
minutes. There will be no XRT or UVOT data until this time. 

Burst Advocate for this burst is V. D'Elia (valerio.delia AT ssdc.asi.it). 
Please contact the BA by email if you require additional information
regarding Swift followup of this burst. In extremely urgent cases, after
trying the Burst Advocate, you can contact the Swift PI by phone (see
Swift TOO web site for information: http://www.swift.psu.edu/)


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