GCN Circular 36792
Subject
LIGO/Virgo/KAGRA S240629by: Coverage and upper limits from MAXI/GSC observations
Date
2024-06-30T01:06:11Z (5 months ago)
From
Satoshi Sugita at Aoyama Gakuin U. <sugita@phys.aoyama.ac.jp>
Via
Web form
M. Nakajima, H. Negoro, 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 S240629by at 2024-06-29 14:52:56.859 UTC (GCN 36784).
At the trigger time of S240629by, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+1589 sec (+26.5 min).
The first one-orbit (92 min) scan observation with GSC after the event covered 80%
of the 90% credible region of the bayestar skymap (bayestar.multiorder.fits,1) from 15:39:13 to 15:41:23 UTC (T0+2777 to T0+2907 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.