GCN Circular 35130
Subject
LIGO/Virgo/KAGRA S231119ab: Coverage and upper limits from MAXI/GSC observations
Date
2023-11-20T02:17:10Z (5 months ago)
From
Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>
Via
Web form
M. Serino, S. Sugita, H. Hiramatsu, H. Nishikawa, Y. Kondo (AGU),
N. Kawai (RIKEN), H. Negoro, M. Nakajima (Nihon U.),
T. Mihara (RIKEN),
Y. Kawakubo (LSU)
report on behalf of the MAXI team:
We examined MAXI/GSC all-sky X-ray images (2-20 keV)
after compact binary merger candidate S231119ab at 2023-11-19 09:38:50 UTC.
At the trigger time of S231119ab, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+843 sec (+14.1 min).
The first one-orbit (92 min) scan observation with GSC after the event covered 82%
of the 90% credible region of the cwb skymap from 09:52:55 to 11:03:41 UTC (T0+845 to T0+5091 sec).
No significant new source was found in the region in the one-orbit scan observation.
A typical 1-sigma averaged upper limit obtained in one scan observation
is 20 mCrab at 2-20 keV.
If you require information about X-ray flux by MAXI/GSC at specific coordinates,
please contact the submitter of this circular by email.