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GCN Circular 34963

Subject
Fermi trigger No 721006392: Global MASTER-Net observations report
Date
2023-11-07T22:45:51Z (6 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 GRB231106.98 (trigger No 721006392,08h 17m 40.80s , +53d 17m 24.0s, R=8.02) errorbox  12562 sec after notice time and 80126 sec after trigger time at 2023-11-07 21:48:34 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 47 deg. The sun  altitude  is -61.9 deg. 

The galactic latitude b = 35 deg., longitude l = 165 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2297251

We obtain a following upper limits.  

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

   80157 | 2023-11-07 21:48:34 |      MASTER-Tavrida | (08h 04m 24.79s , +54d 39m 15.6s) |   C |    60 | 19.1 |        
   81504 | 2023-11-07 22:11:01 |      MASTER-Tavrida | (08h 04m 24.92s , +54d 39m 04.6s) |   C |    60 | 17.7 |        
   81576 | 2023-11-07 22:12:13 |      MASTER-Tavrida | (08h 18m 07.02s , +54d 38m 20.4s) |   C |    60 | 18.3 |        
   82472 | 2023-11-07 22:27:09 |      MASTER-Tavrida | (08h 04m 22.89s , +54d 40m 10.0s) |   C |    60 | 17.8 |        
   82543 | 2023-11-07 22:28:20 |      MASTER-Tavrida | (08h 18m 04.92s , +54d 39m 32.1s) |   C |    60 | 18.2 |        
Filter C is a clear (unfiltred) band. 


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


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