GCN Circular 39712
Subject
Fermi trigger No 763581136: Global MASTER-Net observations report
Date
2025-03-14T02:16:43Z (21 days ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
email
V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko,
A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin,
V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),
O.Gress, N.Budnev (ISU),
C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)
D.Buckley (SAAO),
R.Rebolo (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB250313.74 (trigger No 763581136,18h 42m 24.00s , +00d 58m 58.8s, R=6.27) errorbox 27520 sec after notice time and 27564 sec after trigger time at 2025-03-14 01:31:35 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 56 deg. The sun altitude is -21.3 deg.
The galactic latitude b = 2 deg., longitude l = 33 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2811247
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
27594 | 2025-03-14 01:31:35 | MASTER-Kislovodsk | (18h 39m 04.76s , +01d 26m 30.2s) | C | 60 | 17.6 |
27993 | 2025-03-14 01:38:13 | MASTER-Kislovodsk | (18h 38m 47.91s , -00d 27m 18.2s) | C | 60 | 17.6 |
28073 | 2025-03-14 01:39:33 | MASTER-Kislovodsk | (18h 40m 24.11s , +03d 18m 32.2s) | C | 60 | 17.1 |
28152 | 2025-03-14 01:40:53 | MASTER-Kislovodsk | (18h 23m 49.44s , +01d 26m 56.6s) | C | 60 | 17.9 |
28232 | 2025-03-14 01:42:12 | MASTER-Kislovodsk | (18h 25m 16.69s , +03d 20m 34.7s) | C | 60 | 17.3 |
28312 | 2025-03-14 01:43:32 | MASTER-Kislovodsk | (18h 23m 35.70s , -00d 26m 52.0s) | C | 60 | 18.0 |
28391 | 2025-03-14 01:44:52 | MASTER-Kislovodsk | (18h 43m 03.83s , +05d 12m 24.2s) | C | 60 | 17.0 |
28471 | 2025-03-14 01:46:11 | MASTER-Kislovodsk | (18h 39m 53.31s , -02d 21m 38.9s) | C | 60 | 16.6 |
28551 | 2025-03-14 01:47:31 | MASTER-Kislovodsk | (18h 27m 53.45s , +05d 14m 26.6s) | C | 60 | 17.4 |
28630 | 2025-03-14 01:48:51 | MASTER-Kislovodsk | (18h 54m 10.70s , +01d 26m 14.1s) | C | 60 | 17.5 |
28710 | 2025-03-14 01:50:10 | MASTER-Kislovodsk | (18h 53m 58.89s , -00d 29m 39.5s) | C | 60 | 16.4 |
28791 | 2025-03-14 01:51:31 | MASTER-Kislovodsk | (18h 55m 40.16s , +03d 20m 06.9s) | C | 60 | 17.2 |
28870 | 2025-03-14 01:52:51 | MASTER-Kislovodsk | (18h 55m 09.08s , -02d 21m 42.2s) | C | 60 | 16.7 |
28950 | 2025-03-14 01:54:11 | MASTER-Kislovodsk | (18h 24m 37.00s , -02d 20m 34.3s) | C | 60 | 17.6 |
29030 | 2025-03-14 01:55:30 | MASTER-Kislovodsk | (18h 31m 39.50s , +07d 07m 00.6s) | C | 60 | 16.8 |
29110 | 2025-03-14 01:56:50 | MASTER-Kislovodsk | (18h 42m 08.14s , -04d 15m 24.0s) | C | 60 | 16.6 |
29269 | 2025-03-14 01:59:30 | MASTER-Kislovodsk | (18h 46m 57.68s , +07d 08m 43.9s) | C | 60 | 17.2 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.