Back
GCN Circular 31381

Subject
Fermi GRB 220104A: Global MASTER-Net observations report
Date
2022-01-04T05:00:41Z (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, T.Pogrosheva, E.Minkina,
A.Chasovnikov, V.Topolev, V.Grinshpun, D.Kuvshinov,  D. Cheryasov
(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),

B.L.Carrasco, J.R.Valdes,V.Chavushyan, C.J.Martinez, V.M.Patino Alvarez,
M.L.H.Rodriguez (INAOE, OAGH)

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

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


MASTER-IAC robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 220104A ( Fermi GBM team, GCN 31380Loading...
 
 ) errorbox  581 sec after notice time and 619 sec after trigger time at 2022-01-04 04:11:22 UT, with upper limit up to  18.6 mag. The observations began at zenith distance = 40 deg. The sun  altitude  is -48.4 deg. 

The galactic latitude b = 75 deg., longitude l = 107 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1837544

We obtain a following upper limits.  

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

     680 | 2022-01-04 04:11:22 |          MASTER-IAC | (13h 09m 03.78s , +42d 14m 31.9s) |  P| |   120 | 18.3 |        
     680 | 2022-01-04 04:11:22 |          MASTER-IAC | (13h 10m 16.14s , +42d 07m 48.5s) |  P- |   120 | 17.9 |        
     835 | 2022-01-04 04:13:42 |          MASTER-IAC | (13h 09m 03.68s , +42d 12m 57.0s) |  P| |   150 | 18.5 |        
     835 | 2022-01-04 04:13:42 |          MASTER-IAC | (13h 10m 16.14s , +42d 06m 14.2s) |  P- |   150 | 18.0 |        
    1020 | 2022-01-04 04:16:32 |          MASTER-IAC | (13h 09m 05.78s , +42d 14m 34.3s) |  P| |   180 | 18.6 |        
    1020 | 2022-01-04 04:16:32 |          MASTER-IAC | (13h 10m 18.33s , +42d 07m 51.9s) |  P- |   180 | 18.3 |        
    1219 | 2022-01-04 04:19:52 |          MASTER-IAC | (13h 09m 00.64s , +42d 13m 50.3s) |  P| |   180 | 18.6 |        
    1219 | 2022-01-04 04:19:52 |          MASTER-IAC | (13h 10m 13.28s , +42d 07m 08.1s) |  P- |   180 | 18.3 |        


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