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GRB 220311.69

GCN Circular 31741

Subject
Integral GRB220311.69: Global MASTER-Net OT detection
Date
2022-03-11T16:45:26Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk

V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,
A.Kuznetsov, D. Vlasenko, F. Balakin, I. Gorbunov
Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University

K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk
Irkutsk State University

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

R. Podesta, Carlos Lopez and F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA)

Hugo Levato
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

D. Buckley, S. Potter, A. Kniazev, M. Kotze
South African Astronomical Observatory

MASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in  Russia (Blagoveshchensk State Pedagogical University)  was pointed to the  GRB220311.69 25 sec after notice time and 53 sec after trigger time at 2022-03-11 16:34:45 UT. On our first (10s exposure)  set we  found 1 optical transient within Integral error-box (ra=184.033 dec=66.7611 r=0.054167) brighter than  14.0.


 T-Tmid      Date      Time       Expt.        Ra                Dec           Mag
---------|---------------------|-------|-----------------|-----------------|-------
      58   2022-03-11 16:34:45      10   (12h 16m 05.22s , +66d 47m 23.8s)     13.5

The 5-sigma upper limit has been about  14.0mag
The message may be cited.

GCN Circular 31742

Subject
Integral GRB220311.69: Global MASTER-Net observations report
Date
2022-03-11T16:57:12Z (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-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Integral GRB220311.69 (trigger No 9769,10h 32m 03.74s , +66d 04m 03.8s, R=0.0516667) errorbox  15 sec after notice time and 30 sec after trigger time at 2022-03-11 16:33:46 UT, with upper limit up to  16.4 mag. The observations began at zenith distance = 21 deg. The sun  altitude  is -42.3 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Integral GRB220311.69 errorbox  195 sec after notice time and 210 sec after trigger time at 2022-03-11 16:36:46 UT, with upper limit up to  16.1 mag. Observations started at twilight.  The observations began at zenith distance = 41 deg. The sun  altitude  is -10.4 deg. 

The galactic latitude b = 46 deg., longitude l = 142 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1907358

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      36 |         MASTER-Amur |  P\ |    10 | 14.4 |        
      65 |         MASTER-Amur |  P\ |    10 | 14.5 |        
     230 |         MASTER-Amur |  P\ |    40 | 15.6 |        
     231 |      MASTER-Tavrida |  P\ |    40 | 15.0 |        
     294 |         MASTER-Amur |  P\ |    50 | 15.0 |        
     295 |      MASTER-Tavrida |  P\ |    50 | 14.9 |        
     374 |         MASTER-Amur |  P\ |    70 | 15.5 |        
     369 |      MASTER-Tavrida |  P\ |    60 | 14.5 |        
     459 |      MASTER-Tavrida |  P\ |    80 | 15.5 |        
     468 |         MASTER-Amur |  P\ |    80 | 15.5 |        
     568 |      MASTER-Tavrida |  P\ |   100 | 15.1 |        
     578 |         MASTER-Amur |  P\ |   100 | 15.7 |        
     698 |      MASTER-Tavrida |  P\ |   120 | 16.1 |        
     712 |         MASTER-Amur |  P\ |   130 | 15.7 |        
     893 |         MASTER-Amur |  P\ |   160 | 16.3 |        
    1083 |         MASTER-Amur |  P\ |   180 | 16.4 |        


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

GCN Circular 31743

Subject
Integral GRB220311.69: Global MASTER-Net observations report
Date
2022-03-11T16:57:18Z (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-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Integral GRB220311.69 (trigger No 75305,12h 16m 08.21s , +66d 45m 39.6s, R=0.0542) errorbox  45 sec after notice time and 53 sec after trigger time at 2022-03-11 16:34:45 UT, with upper limit up to  14.5 mag. The observations began at zenith distance = 16 deg. The sun  altitude  is -42.3 deg. 

The galactic latitude b = 50 deg., longitude l = 128 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1907372

We obtain a following upper limits.  

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

      59 |         MASTER-Amur |  P\ |    10 | 14.5 |        
      94 |         MASTER-Amur |  P\ |    20 | 14.1 |        
     134 |         MASTER-Amur |  P\ |    20 | 14.1 |        


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