Back
GCN Circular 32458

Subject
Fermi trigger No 681890304: Global MASTER-Net observations report
Date
2022-08-11T08:30:10Z (2 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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 GRB220811.25 (trigger No 681890304,04h 09m 26.40s , +27d 33m 00.0s, R=1.95) errorbox  5615 sec after notice time and 5647 sec after trigger time at 2022-08-11 07:32:26 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 78 deg. The sun  altitude  is -47.7 deg. 

The galactic latitude b = -17 deg., longitude l = 168 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2054011

We obtain a following upper limits.  

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

    5678 | 2022-08-11 07:32:26 |         MASTER-OAFA | (04h 00m 45.65s , +25d 02m 27.9s) |   C |    60 | 16.3 |        
    6470 | 2022-08-11 07:45:38 |         MASTER-OAFA | (04h 08m 42.35s , +25d 03m 59.3s) |   C |    60 | 14.3 |        
    6561 | 2022-08-11 07:47:10 |         MASTER-OAFA | (04h 17m 35.74s , +25d 02m 41.5s) |   C |    60 | 14.0 |        
    6652 | 2022-08-11 07:48:41 |         MASTER-OAFA | (04h 00m 46.00s , +25d 04m 07.3s) |   C |    60 | 16.0 |        
    7275 | 2022-08-11 07:59:03 |         MASTER-OAFA | (04h 12m 54.55s , +26d 57m 02.6s) |   C |    60 | 15.3 |        
    7637 | 2022-08-11 08:05:06 |         MASTER-OAFA | (04h 08m 39.71s , +25d 04m 33.7s) |   C |    60 | 15.8 |        
    7728 | 2022-08-11 08:06:37 |         MASTER-OAFA | (04h 17m 39.63s , +25d 03m 47.9s) |   C |    60 | 15.6 |        
    8124 | 2022-08-11 08:13:12 |         MASTER-OAFA | (04h 04m 46.88s , +26d 56m 37.1s) |   C |    60 | 15.6 |        
    8215 | 2022-08-11 08:14:44 |         MASTER-OAFA | (04h 12m 57.20s , +26d 58m 42.3s) |   C |    60 | 15.3 |        
    8306 | 2022-08-11 08:16:15 |         MASTER-OAFA | (04h 21m 53.89s , +26d 58m 00.8s) |   C |    60 | 15.6 |        
    8398 | 2022-08-11 08:17:46 |         MASTER-OAFA | (04h 00m 06.99s , +28d 51m 26.9s) |   C |    60 | 15.3 |        
    8489 | 2022-08-11 08:19:17 |         MASTER-OAFA | (04h 09m 12.31s , +28d 50m 42.6s) |   C |    60 | 14.5 |        
    8580 | 2022-08-11 08:20:49 |         MASTER-OAFA | (04h 08m 46.94s , +25d 02m 59.4s) |   C |    60 | 15.8 |        
    8672 | 2022-08-11 08:22:20 |         MASTER-OAFA | (04h 17m 36.33s , +25d 04m 28.4s) |   C |    60 | 15.6 |        
Filter C is a clear (unfiltred) band. 


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