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GCN Circular 36233

Subject
Fermi trigger No 735470374: Global MASTER-Net observations report
Date
2024-04-22T18:31:16Z (3 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-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 GRB240422.39 (trigger No 735470374,19h 01m 45.60s , +50d 12m 00.0s, R=2.77) errorbox  14775 sec after notice time and 28066 sec after trigger time at 2024-04-22 17:07:16 UT, with upper limit up to  15.7 mag. Observations started at twilight.  The observations began at zenith distance = 79 deg. The sun  altitude  is -11.9 deg. 

The galactic latitude b = 19 deg., longitude l = 81 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2431376

We obtain a following upper limits.  

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

   28097 | 2024-04-22 17:07:16 |   MASTER-Kislovodsk | (19h 08m 50.65s , +50d 36m 56.3s) |   C |    60 | 15.4 |        
   28097 | 2024-04-22 17:07:16 |   MASTER-Kislovodsk | (19h 15m 01.01s , +50d 11m 53.6s) |   C |    60 | 13.8 |        
   28177 | 2024-04-22 17:08:36 |   MASTER-Kislovodsk | (18h 51m 07.10s , +50d 10m 54.9s) |   C |    60 | 13.9 |        
   28177 | 2024-04-22 17:08:36 |   MASTER-Kislovodsk | (18h 44m 56.27s , +50d 35m 51.8s) |   C |    60 | 15.7 |        
   28257 | 2024-04-22 17:09:56 |   MASTER-Kislovodsk | (19h 08m 01.40s , +52d 30m 37.0s) |   C |    60 | 15.5 |        
   28257 | 2024-04-22 17:09:56 |   MASTER-Kislovodsk | (19h 14m 28.01s , +52d 05m 33.0s) |   C |    60 | 13.4 |        
   28338 | 2024-04-22 17:11:17 |   MASTER-Kislovodsk | (18h 47m 50.82s , +48d 42m 28.9s) |   C |    60 | 15.5 |        
   28338 | 2024-04-22 17:11:17 |   MASTER-Kislovodsk | (18h 53m 46.86s , +48d 17m 25.8s) |   C |    60 | 14.0 |        
   28418 | 2024-04-22 17:12:37 |   MASTER-Kislovodsk | (19h 16m 46.27s , +48d 17m 45.1s) |   C |    60 | 14.2 |        
   28418 | 2024-04-22 17:12:37 |   MASTER-Kislovodsk | (19h 10m 50.90s , +48d 42m 59.0s) |   C |    60 | 15.5 |        
   28565 | 2024-04-22 17:15:04 |   MASTER-Kislovodsk | (18h 42m 58.98s , +52d 31m 29.3s) |   C |    60 | 15.6 |        
   28565 | 2024-04-22 17:15:04 |   MASTER-Kislovodsk | (18h 49m 26.47s , +52d 06m 28.3s) |   C |    60 | 13.4 |        
   28645 | 2024-04-22 17:16:24 |   MASTER-Kislovodsk | (18h 57m 36.26s , +46d 23m 15.4s) |   C |    60 | 14.4 |        
   28646 | 2024-04-22 17:16:25 |   MASTER-Kislovodsk | (18h 51m 53.60s , +46d 48m 25.5s) |   C |    60 | 15.5 |        
   28729 | 2024-04-22 17:17:48 |   MASTER-Kislovodsk | (19h 08m 16.95s , +54d 22m 53.3s) |   C |    60 | 15.6 |        
   28729 | 2024-04-22 17:17:48 |   MASTER-Kislovodsk | (19h 15m 01.49s , +53d 57m 44.1s) |   C |    60 | 13.4 |        
   28809 | 2024-04-22 17:19:08 |   MASTER-Kislovodsk | (18h 49m 04.45s , +53d 58m 32.0s) |   C |    60 | 12.6 |        
   29452 | 2024-04-22 17:29:50 |   MASTER-Kislovodsk | (19h 08m 50.50s , +50d 37m 29.7s) |   C |    60 | 15.6 |        
   29452 | 2024-04-22 17:29:51 |   MASTER-Kislovodsk | (19h 15m 02.18s , +50d 12m 38.1s) |   C |    60 | 14.4 |        
   29533 | 2024-04-22 17:31:12 |   MASTER-Kislovodsk | (18h 45m 01.26s , +50d 36m 59.4s) |   C |    60 | 15.6 |        
   29533 | 2024-04-22 17:31:12 |   MASTER-Kislovodsk | (18h 51m 13.58s , +50d 12m 14.4s) |   C |    60 | 13.9 |        
   29614 | 2024-04-22 17:32:33 |   MASTER-Kislovodsk | (19h 07m 57.49s , +52d 29m 24.4s) |   C |    60 | 15.4 |        
   29614 | 2024-04-22 17:32:33 |   MASTER-Kislovodsk | (19h 14m 25.09s , +52d 04m 32.8s) |   C |    60 | 13.6 |        
   29696 | 2024-04-22 17:33:55 |   MASTER-Kislovodsk | (18h 47m 57.62s , +48d 42m 21.0s) |   C |    60 | 15.4 |        
   29696 | 2024-04-22 17:33:55 |   MASTER-Kislovodsk | (18h 53m 54.83s , +48d 17m 33.9s) |   C |    60 | 14.2 |        
   29778 | 2024-04-22 17:35:17 |   MASTER-Kislovodsk | (19h 10m 56.19s , +48d 43m 09.6s) |   C |    60 | 15.4 |        
   29778 | 2024-04-22 17:35:17 |   MASTER-Kislovodsk | (19h 16m 52.55s , +48d 18m 12.4s) |   C |    60 | 14.4 |        
   29858 | 2024-04-22 17:36:37 |   MASTER-Kislovodsk | (18h 43m 05.14s , +52d 30m 24.3s) |   C |    60 | 15.3 |        
   29858 | 2024-04-22 17:36:37 |   MASTER-Kislovodsk | (18h 49m 33.24s , +52d 05m 38.1s) |   C |    60 | 13.4 |        
   29938 | 2024-04-22 17:37:57 |   MASTER-Kislovodsk | (18h 51m 55.55s , +46d 49m 40.0s) |   C |    60 | 15.1 |        
   29938 | 2024-04-22 17:37:57 |   MASTER-Kislovodsk | (18h 57m 39.05s , +46d 24m 48.6s) |   C |    60 | 14.4 |        
   30018 | 2024-04-22 17:39:17 |   MASTER-Kislovodsk | (19h 08m 18.49s , +54d 24m 21.8s) |   C |    60 | 15.3 |        
   30018 | 2024-04-22 17:39:17 |   MASTER-Kislovodsk | (19h 15m 04.01s , +53d 59m 26.7s) |   C |    60 | 13.5 |        
   30098 | 2024-04-22 17:40:37 |   MASTER-Kislovodsk | (18h 49m 03.08s , +54d 01m 18.0s) |   C |    60 | 13.1 |        
Filter C is a clear (unfiltred) band. 


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


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