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GCN Circular 32007

Subject
Fermi trigger No 673610950: Global MASTER-Net observations report
Date
2022-05-07T10:30:31Z (3 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-OAGH robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB220507.42 (trigger No 673610950,13h 49m 00.00s , +45d 33m 00.0s, R=6.17) errorbox  284 sec after notice time and 305 sec after trigger time at 2022-05-07 10:14:11 UT, with upper limit up to  19.4 mag. The observations began at zenith distance = 51 deg. The sun  altitude  is -25.7 deg. 

The galactic latitude b = 68 deg., longitude l = 94 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1965407

We obtain a following upper limits.  

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

     336 | 2022-05-07 10:14:11 |         MASTER-OAGH | (13h 35m 38.01s , +46d 46m 16.9s) |   C |    60 | 18.7 |        
     336 | 2022-05-07 10:14:11 |         MASTER-OAGH | (13h 35m 10.72s , +47d 13m 45.9s) |   C |    60 | 19.1 |        
     417 | 2022-05-07 10:15:33 |         MASTER-OAGH | (13h 47m 11.05s , +46d 45m 16.5s) |   C |    60 | 18.4 |        
     417 | 2022-05-07 10:15:33 |         MASTER-OAGH | (13h 46m 44.50s , +47d 12m 41.2s) |   C |    60 | 19.1 |        
     499 | 2022-05-07 10:16:54 |         MASTER-OAGH | (13h 51m 05.58s , +44d 53m 00.6s) |   C |    60 | 18.4 |        
     499 | 2022-05-07 10:16:54 |         MASTER-OAGH | (13h 50m 40.10s , +45d 20m 30.9s) |   C |    60 | 19.0 |        
     580 | 2022-05-07 10:18:15 |         MASTER-OAGH | (14h 02m 22.37s , +44d 51m 31.1s) |   C |    60 | 18.8 |        
     580 | 2022-05-07 10:18:15 |         MASTER-OAGH | (14h 01m 57.60s , +45d 18m 56.9s) |   C |    60 | 19.4 |        
     661 | 2022-05-07 10:19:36 |         MASTER-OAGH | (13h 45m 40.85s , +42d 58m 06.5s) |   C |    60 | 18.2 |        
     661 | 2022-05-07 10:19:36 |         MASTER-OAGH | (13h 45m 16.15s , +43d 25m 46.7s) |   C |    60 | 19.0 |        
Filter C is a clear (unfiltred) band. 


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