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GCN Circular 34384

Subject
Fermi trigger No 713525317: Global MASTER-Net observations report
Date
2023-08-12T16:45:39Z (8 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, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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. Gres, N.M. Budnev
(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),

A. Gabovich, V.Yurkov 
(Blagoveschensk Educational State University)


MASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB230812.39 (trigger No 713525317,19h 36m 48.00s , -32d 09m 36.0s, R=4.53) errorbox  569 sec after notice time and 603 sec after trigger time at 2023-08-12 09:38:35 UT, with upper limit up to  15.4 mag. The observations began at zenith distance = 83 deg. The sun  altitude  is -20.7 deg. 

The galactic latitude b = -24 deg., longitude l =  8 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2253135

We obtain a following upper limits.  

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

     664 | 2023-08-12 09:38:35 |         MASTER-OAFA | (19h 35m 05.13s , -32d 11m 16.7s) |   C |   120 | 15.4 |        
     830 | 2023-08-12 09:41:07 |         MASTER-OAFA | (19h 34m 59.66s , -32d 12m 15.9s) |   C |   150 | 14.8 |        
    1046 | 2023-08-12 09:44:28 |         MASTER-OAFA | (19h 35m 04.86s , -32d 12m 11.3s) |   C |   180 | 14.7 |        
    1258 | 2023-08-12 09:48:00 |         MASTER-OAFA | (19h 35m 01.58s , -32d 10m 31.0s) |   C |   180 | 15.1 |        
Filter C is a clear (unfiltred) band. 


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


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