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GCN Circular 35294

Subject
Fermi trigger No 723581802: Global MASTER-Net observations report
Date
2023-12-06T20:17:17Z (7 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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB231206.79 (trigger No 723581802,02h 47m 28.80s , +03d 54m 36.0s, R=8.34) errorbox  569 sec after notice time and 604 sec after trigger time at 2023-12-06 19:06:41 UT, with upper limit up to  19.9 mag. The observations began at zenith distance = 46 deg. The sun  altitude  is -17.1 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB231206.79 errorbox  1092 sec after notice time and 1127 sec after trigger time at 2023-12-06 19:15:24 UT, with upper limit up to  19.4 mag. The observations began at zenith distance = 40 deg. The sun  altitude  is -54.4 deg. 

The galactic latitude b = -48 deg., longitude l = 170 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2326390

We obtain a following upper limits.  

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

     634 | 2023-12-06 19:06:41 |         MASTER-SAAO | (03h 12m 07.17s , +06d 46m 04.0s) |   C |    60 | 19.8 |        
     634 | 2023-12-06 19:06:41 |         MASTER-SAAO | (03h 21m 43.18s , +06d 35m 27.8s) |   C |    60 | 19.9 |        
     725 | 2023-12-06 19:08:12 |         MASTER-SAAO | (02h 40m 28.91s , +02d 56m 45.6s) |   C |    60 | 19.4 |        
     725 | 2023-12-06 19:08:12 |         MASTER-SAAO | (02h 50m 02.02s , +02d 46m 09.7s) |   C |    60 | 19.8 |        
     805 | 2023-12-06 19:09:32 |         MASTER-SAAO | (02h 40m 23.05s , +01d 02m 56.1s) |   C |    60 | 19.7 |        
     805 | 2023-12-06 19:09:32 |         MASTER-SAAO | (02h 49m 55.65s , +00d 52m 20.4s) |   C |    60 | 19.9 |        
     896 | 2023-12-06 19:11:03 |         MASTER-SAAO | (02h 40m 54.04s , +04d 52m 42.3s) |   C |    60 | 19.4 |        
     896 | 2023-12-06 19:11:03 |         MASTER-SAAO | (02h 50m 28.44s , +04d 42m 08.2s) |   C |    60 | 19.9 |        
    1157 | 2023-12-06 19:15:24 |      MASTER-Tavrida | (02h 29m 53.23s , +03d 43m 34.4s) |   C |    60 | 19.0 |        
    1304 | 2023-12-06 19:17:51 |      MASTER-Tavrida | (03h 00m 59.09s , +07d 35m 01.7s) |   C |    60 | 19.4 |        
    1377 | 2023-12-06 19:19:04 |      MASTER-Tavrida | (02h 46m 52.80s , +11d 22m 04.2s) |   C |    60 | 19.1 |        
    1451 | 2023-12-06 19:20:18 |      MASTER-Tavrida | (03h 00m 31.67s , +05d 38m 56.6s) |   C |    60 | 19.4 |        
    1527 | 2023-12-06 19:21:34 |      MASTER-Tavrida | (02h 30m 04.15s , +05d 38m 41.0s) |   C |    60 | 19.1 |        
    1601 | 2023-12-06 19:22:48 |      MASTER-Tavrida | (03h 00m 26.41s , +03d 46m 44.2s) |   C |    60 | 19.4 |        
    1675 | 2023-12-06 19:24:02 |      MASTER-Tavrida | (03h 01m 28.63s , +09d 28m 41.3s) |   C |    60 | 19.4 |        
    1750 | 2023-12-06 19:25:17 |      MASTER-Tavrida | (02h 45m 06.21s , +01d 49m 54.9s) |   C |    60 | 18.5 |        
    1825 | 2023-12-06 19:26:32 |      MASTER-Tavrida | (02h 30m 51.96s , +09d 26m 29.5s) |   C |    60 | 18.7 |        
    1898 | 2023-12-06 19:27:46 |      MASTER-Tavrida | (02h 31m 33.51s , +11d 20m 42.5s) |   C |    60 | 18.0 |        
    2269 | 2023-12-06 19:33:56 |      MASTER-Tavrida | (02h 29m 50.50s , +03d 42m 51.8s) |   C |    60 | 18.6 |        
    2341 | 2023-12-06 19:35:08 |      MASTER-Tavrida | (02h 37m 58.70s , +03d 43m 33.6s) |   C |    60 | 18.5 |        
    2415 | 2023-12-06 19:36:22 |      MASTER-Tavrida | (02h 46m 10.76s , +09d 27m 32.0s) |   C |    60 | 18.6 |        
    2488 | 2023-12-06 19:37:35 |      MASTER-Tavrida | (02h 54m 14.71s , +09d 26m 18.6s) |   C |    60 | 19.3 |        
    2561 | 2023-12-06 19:38:48 |      MASTER-Tavrida | (03h 00m 58.26s , +07d 34m 11.9s) |   C |    60 | 19.0 |        
    2634 | 2023-12-06 19:40:01 |      MASTER-Tavrida | (03h 08m 54.34s , +07d 33m 40.9s) |   C |    60 | 19.1 |        
    2708 | 2023-12-06 19:41:15 |      MASTER-Tavrida | (02h 46m 50.77s , +11d 21m 21.3s) |   C |    60 | 18.6 |        
    2780 | 2023-12-06 19:42:27 |      MASTER-Tavrida | (02h 55m 03.87s , +11d 20m 44.6s) |   C |    60 | 19.2 |        
    2854 | 2023-12-06 19:43:41 |      MASTER-Tavrida | (03h 00m 29.11s , +05d 38m 06.2s) |   C |    60 | 19.4 |        
    3005 | 2023-12-06 19:46:12 |      MASTER-Tavrida | (03h 08m 32.22s , +05d 38m 45.9s) |   C |    60 | 18.9 |        
    3156 | 2023-12-06 19:48:44 |      MASTER-Tavrida | (02h 29m 59.22s , +05d 38m 18.5s) |   C |    60 | 18.3 |        
    3229 | 2023-12-06 19:49:56 |      MASTER-Tavrida | (02h 38m 05.05s , +05d 37m 41.9s) |   C |    60 | 18.3 |        
    3303 | 2023-12-06 19:51:10 |      MASTER-Tavrida | (03h 00m 15.71s , +03d 43m 54.9s) |   C |    60 | 18.7 |        
    3376 | 2023-12-06 19:52:23 |      MASTER-Tavrida | (03h 08m 22.80s , +03d 44m 46.6s) |   C |    60 | 18.8 |        
    3450 | 2023-12-06 19:53:37 |      MASTER-Tavrida | (03h 01m 28.77s , +09d 27m 47.3s) |   C |    60 | 19.1 |        
    3523 | 2023-12-06 19:54:50 |      MASTER-Tavrida | (03h 09m 32.69s , +09d 26m 23.3s) |   C |    60 | 19.0 |        
    3597 | 2023-12-06 19:56:04 |      MASTER-Tavrida | (02h 45m 09.56s , +01d 50m 49.2s) |   C |    60 | 18.4 |        
    3669 | 2023-12-06 19:57:16 |      MASTER-Tavrida | (02h 53m 03.04s , +01d 50m 16.8s) |   C |    60 | 18.7 |        
    3744 | 2023-12-06 19:58:31 |      MASTER-Tavrida | (02h 30m 46.92s , +09d 26m 02.0s) |   C |    60 | 18.6 |        
    3816 | 2023-12-06 19:59:43 |      MASTER-Tavrida | (02h 38m 57.23s , +09d 25m 25.7s) |   C |    60 | 18.7 |        
    3889 | 2023-12-06 20:00:56 |      MASTER-Tavrida | (02h 31m 27.24s , +11d 18m 00.5s) |   C |    60 | 18.7 |        
    3969 | 2023-12-06 20:02:16 |      MASTER-Tavrida | (02h 39m 38.68s , +11d 18m 32.9s) |   C |    60 | 18.7 |        
    4414 | 2023-12-06 20:09:41 |      MASTER-Tavrida | (02h 29m 48.51s , +03d 42m 39.2s) |   C |    60 | 18.5 |        
    4486 | 2023-12-06 20:10:53 |      MASTER-Tavrida | (02h 37m 48.51s , +03d 44m 00.9s) |   C |    60 | 18.3 |        
Filter C is a clear (unfiltred) band. 


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


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