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GCN Circular 38230

Subject
LIGO/Virgo/KAGRA S241114bi: Coverage and upper limits from MAXI/GSC observations
Date
2024-11-15T04:41:09Z (18 days ago)
From
Yuta Kawakubo at Aoyama Gakuin University <kawakubo@phys.aoyama.ac.jp>
Via
Web form
K. Takagi, H. Negoro, M. Nakajima (Nihon U.),
N. Kawai, T. Mihara, (RIKEN),
S. Sugita, M. Serino, Y. Kawakubo, H. Hiramatsu, H. Nishikawa, Y. Kondo (AGU)
report on behalf of the MAXI team:

We examined MAXI/GSC all-sky X-ray images (2-20 keV)
after compact binary merger candidate S241114bi at 2024-11-14 23:52:58.148 UTC (#38228).

At the trigger time of S241114bi, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+792 sec (+13.2 min).
The first one-orbit (92 min) scan observation with GSC after the event covered 94%
of the 90% credible region of the bayestar skymap from 00:06:11 to 01:13:09 UTC (T0+793 to T0+4811 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.
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