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GRB 211001.03

GCN Circular 30904

Subject

Swift GRB211001.03: Global MASTER-Net OT detection

Date

2021-10-01T00:50:48Z (4 years ago)

From

Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

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

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

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

V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk

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

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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the  GRB211001.03 27 sec after notice time and 41 sec after trigger time at 2021-10-01 00:44:01 UT. On our 3-th (20s exposure)  set , obtained 100 sec after tigger time at 2021-10-01 00:44:59 UT, we  found 1 optical transient within Swift error-box (ra=71.4667 dec=12.0397 r=0.05) brighter than  14.6.


 T-Tmid      Date      Time       Expt.        Ra                Dec           Mag
---------|---------------------|-------|-----------------|-----------------|-------
     110   2021-10-01 00:44:59      20   (04h 46m 00.28s , +12d 02m 15.1s)     14.2

The 5-sigma upper limit has been about  14.6mag
The message may be cited.

GCN Circular 30906

Subject

Swift GRB211001.03: Global MASTER-Net observations report

Date

2021-10-01T01:58:35Z (4 years ago)

From

Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
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, O.Ershova 
(Irkutsk State University, API),

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

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




MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Swift GRB211001.03 (trigger No 1076121,04h 45m 52.80s , +12d 02m 24.0s, R=0.05) errorbox 41 sec after trigger time at 2021-10-01 00:44:01 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 35 deg. The sun  altitude  is -31.3 deg. 

The galactic latitude b = -20 deg., longitude l = 187 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1738591

We obtain a following upper limits.  

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

      47 |      MASTER-Tavrida |  P\ |    10 | 14.7 |        
      76 |      MASTER-Tavrida |  P\ |    10 | 14.8 |        
     110 |      MASTER-Tavrida |  P\ |    20 | 15.1 |        
     154 |      MASTER-Tavrida |  P\ |    30 | 14.8 |        
     209 |      MASTER-Tavrida |  P\ |    40 | 15.2 |        
     273 |      MASTER-Tavrida |  P\ |    50 | 15.8 |        
     347 |      MASTER-Tavrida |  P\ |    60 | 15.9 |        
     436 |      MASTER-Tavrida |  P\ |    80 | 15.9 |        
     545 |      MASTER-Tavrida |  P\ |   100 | 15.9 |        
     674 |      MASTER-Tavrida |  P\ |   120 | 16.0 |        
    1099 |      MASTER-Tavrida |   C |   180 | 18.4 |        
    1298 |      MASTER-Tavrida |   C |   180 | 18.5 |        
    1566 |      MASTER-Tavrida |   C |   180 | 18.6 |        
    1765 |      MASTER-Tavrida |   C |   180 | 18.7 |        
    1964 |      MASTER-Tavrida |   C |   180 | 18.8 |        
    2163 |      MASTER-Tavrida |   C |   180 | 18.9 |        
    2362 |      MASTER-Tavrida |   C |   180 | 18.9 |        
    2561 |      MASTER-Tavrida |   C |   180 | 19.0 |        
    2760 |      MASTER-Tavrida |   C |   180 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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

GCN Circular 30911

Subject

Swift GRB211001.03 / trigger 1076121 : MASTER OT retraction

Date

2021-10-01T07:42:35Z (4 years ago)

From

Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>

E. Gorbovskoy, V.Lipunov

MASTER optical candidate to transients sources from GCN 30904Loading...
 
  is not astrophysical.