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GCN Circular 35910

Subject
Fermi GRB 240310A: Global MASTER-Net observations report
Date
2024-03-10T22:45:52Z (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 GRB 240310A ( Fermi GBM team, GCN 35908Not found
 
 
) errorbox  52875 sec after notice time and 52908 sec after trigger time at 2024-03-10 20:21:56 UT, with upper limit up to  17.3 mag. Observations started at twilight.  The observations began at zenith distance = 69 deg. The sun  altitude  is -15.5 deg. 

The galactic latitude b = -29 deg., longitude l = 43 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2395738

We obtain a following upper limits.  

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

   52938 | 2024-03-10 20:21:56 |         MASTER-Amur | (20h 20m 04.50s , +05d 01m 00.9s) |   C |    60 | 17.3 |        
   53018 | 2024-03-10 20:23:16 |         MASTER-Amur | (20h 28m 04.31s , +05d 02m 38.3s) |   C |    60 | 17.2 |        
   53177 | 2024-03-10 20:25:55 |         MASTER-Amur | (20h 08m 44.97s , +01d 12m 42.5s) |   C |    60 | 16.8 |        
   53895 | 2024-03-10 20:37:53 |         MASTER-Amur | (20h 19m 59.07s , +05d 01m 44.8s) |   C |    60 | 17.0 |        
   53975 | 2024-03-10 20:39:13 |         MASTER-Amur | (20h 28m 08.06s , +05d 01m 08.4s) |   C |    60 | 16.9 |        
   54136 | 2024-03-10 20:41:54 |         MASTER-Amur | (20h 08m 48.83s , +01d 10m 54.5s) |   C |    60 | 16.1 |        
   54215 | 2024-03-10 20:43:14 |         MASTER-Amur | (20h 15m 59.12s , +01d 11m 14.5s) |   C |    60 | 16.5 |        
   54295 | 2024-03-10 20:44:33 |         MASTER-Amur | (20h 24m 02.80s , +01d 13m 22.6s) |   C |    60 | 16.3 |        
   54375 | 2024-03-10 20:45:53 |         MASTER-Amur | (20h 32m 30.33s , +03d 07m 57.2s) |   C |    60 | 16.4 |        
   54455 | 2024-03-10 20:47:13 |         MASTER-Amur | (20h 40m 37.56s , +03d 07m 22.0s) |   C |    60 | 16.4 |        
   54694 | 2024-03-10 20:51:12 |         MASTER-Amur | (20h 31m 12.01s , +01d 11m 40.1s) |   C |    60 | 15.9 |        
   54774 | 2024-03-10 20:52:32 |         MASTER-Amur | (20h 39m 14.65s , +01d 13m 39.3s) |   C |    60 | 15.8 |        
   54854 | 2024-03-10 20:53:52 |         MASTER-Amur | (20h 19m 58.98s , +04d 59m 44.6s) |   C |    60 | 16.0 |        
   54933 | 2024-03-10 20:55:12 |         MASTER-Amur | (20h 27m 59.97s , +05d 01m 09.9s) |   C |    60 | 15.7 |        
   55093 | 2024-03-10 20:57:51 |         MASTER-Amur | (20h 08m 44.79s , +01d 09m 45.4s) |   C |    60 | 14.9 |        
Filter C is a clear (unfiltred) band. 


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