GCN Circular 36454

H. Negoro, M. Nakajima, K. Takagi (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 S240513cx at 2024-05-13 12:14:18.837 UTC.

At the trigger time of S240513cx, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+1386 sec (+23.1 min).
The first one-orbit (92 min) scan observation with GSC after the event covered 41%
of the 90% credible region of the bayestar skymap from 12:37:28 to 13:40:48 UTC (T0+1390 to T0+5190 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.