GCN Circular 36294
Subject
Fermi trigger No 735697285: Global MASTER-Net observations report
Date
2024-04-25T00:31:14Z (5 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),
D. Buckley
(South African Astronomical Observatory),
O.A. Gress, N.M. Budnev, O.Ershova
(Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez
(INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
V. Yurkov, A. Gabovich
(Blagoveschensk Educational State University)
MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB240425.01 (trigger No 735697285,15h 01m 45.60s , +45d 39m 00.0s, R=5.8) errorbox 96 sec after notice time and 128 sec after trigger time at 2024-04-25 00:23:28 UT, with upper limit up to 13.0 mag. The observations began at zenith distance = 20 deg. The sun altitude is -21.9 deg.
MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB240425.01 errorbox 109 sec after notice time and 141 sec after trigger time at 2024-04-25 00:23:41 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 79 deg. The sun altitude is -59.1 deg.
The galactic latitude b = 58 deg., longitude l = 77 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=2434813
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
144 | 2024-04-25 00:23:28 | MASTER-Tavrida | (15h 02m 27.12s , +45d 55m 23.3s) | C | 30 | 13.0 |
156 | 2024-04-25 00:23:41 | MASTER-SAAO | (15h 00m 05.69s , +45d 46m 57.7s) | C | 30 | 17.1 |
156 | 2024-04-25 00:23:41 | MASTER-SAAO | (15h 02m 38.82s , +45d 34m 01.6s) | C | 30 | 17.0 |
181 | 2024-04-25 00:24:05 | MASTER-Tavrida | (15h 02m 29.03s , +45d 57m 04.9s) | C | 30 | 12.4 |
206 | 2024-04-25 00:24:31 | MASTER-SAAO | (15h 00m 05.85s , +45d 47m 01.8s) | C | 30 | 17.1 |
206 | 2024-04-25 00:24:31 | MASTER-SAAO | (15h 02m 38.88s , +45d 34m 06.6s) | C | 30 | 17.0 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.