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GCN Circular 36383

Subject
Fermi trigger No 736379109: Global MASTER-Net observations report
Date
2024-05-03T14:30:59Z (2 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-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB240502.91 (trigger No 736379109,11h 07m 31.20s , +66d 18m 00.0s, R=8.19) errorbox  55169 sec after notice time and 55202 sec after trigger time at 2024-05-03 13:05:06 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 16 deg. The sun  altitude  is -17.1 deg. 

The galactic latitude b = 48 deg., longitude l = 138 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2441402

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

   55232 | 2024-05-03 13:05:06 |         MASTER-Amur | (12h 18m 22.11s , +65d 30m 02.4s) |   C |    60 | 18.4 |        
   55232 | 2024-05-03 13:05:06 |         MASTER-Amur | (12h 36m 46.79s , +65d 54m 57.8s) |   C |    60 | 16.3 |        
   55325 | 2024-05-03 13:06:39 |         MASTER-Amur | (12h 30m 34.09s , +67d 26m 17.2s) |   C |    60 | 18.3 |        
   55325 | 2024-05-03 13:06:39 |         MASTER-Amur | (12h 50m 28.32s , +67d 51m 13.8s) |   C |    60 | 16.6 |        
   55510 | 2024-05-03 13:09:45 |         MASTER-Amur | (12h 15m 52.28s , +67d 40m 45.8s) |   C |    60 | 18.5 |        
   55510 | 2024-05-03 13:09:45 |         MASTER-Amur | (11h 56m 38.85s , +67d 15m 21.3s) |   C |    60 | 16.6 |        
   55707 | 2024-05-03 13:13:01 |         MASTER-Amur | (12h 45m 44.22s , +69d 20m 30.4s) |   C |    60 | 18.1 |        
   55893 | 2024-05-03 13:16:07 |         MASTER-Amur | (12h 29m 58.15s , +69d 33m 03.7s) |   C |    60 | 17.1 |        
   55893 | 2024-05-03 13:16:07 |         MASTER-Amur | (12h 09m 07.96s , +69d 07m 38.3s) |   C |    60 | 15.2 |        
   55986 | 2024-05-03 13:17:40 |         MASTER-Amur | (12h 04m 30.02s , +65d 44m 55.7s) |   C |    60 | 17.0 |        
   55986 | 2024-05-03 13:17:40 |         MASTER-Amur | (11h 46m 42.49s , +65d 19m 32.5s) |   C |    60 | 15.2 |        
   56101 | 2024-05-03 13:19:36 |         MASTER-Amur | (12h 17m 16.78s , +71d 12m 09.6s) |   C |    60 | 16.8 |        
   56101 | 2024-05-03 13:19:36 |         MASTER-Amur | (12h 41m 01.12s , +71d 36m 48.0s) |   C |    60 | 15.6 |        
   56194 | 2024-05-03 13:21:09 |         MASTER-Amur | (12h 41m 21.14s , +65d 45m 48.9s) |   C |    60 | 17.1 |        
   56194 | 2024-05-03 13:21:09 |         MASTER-Amur | (12h 23m 32.50s , +65d 20m 01.3s) |   C |    60 | 15.4 |        
   56287 | 2024-05-03 13:22:42 |         MASTER-Amur | (12h 30m 41.01s , +67d 25m 14.4s) |   C |    60 | 16.9 |        
   56287 | 2024-05-03 13:22:42 |         MASTER-Amur | (12h 50m 36.72s , +67d 49m 39.8s) |   C |    60 | 15.6 |        
   56474 | 2024-05-03 13:25:48 |         MASTER-Amur | (12h 15m 54.46s , +67d 40m 26.3s) |   C |    60 | 14.4 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.


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