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GCN Circular 35543

Subject
Integral GRB240115.70: Global MASTER-Net observations report
Date
2024-01-15T21:38:42Z (a month ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
legacy email
V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik,  D. Vlasenko,
G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij
(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. Gress, N.M. Budnev, O.Ershova
(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),

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

MASTER-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the Integral GRB240115.70 (trigger No 10472,12h 47m 16.10s , -35d 33m 29.1s, R=0.053) errorbox  12776 sec after notice time and 12801 sec after trigger time at 2024-01-15 20:19:16 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 87 deg. The sun  altitude  is -26.0 deg. 

The galactic latitude b = 27 deg., longitude l = 303 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2356567

We obtain a following upper limits.  

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

   12891 |         MASTER-SAAO |   C |   180 | 16.3 |        
   14129 |         MASTER-SAAO |   C |   180 | 15.3 |        
   14129 |         MASTER-SAAO |   C |   180 | 17.6 |        
   14329 |         MASTER-SAAO |   C |   180 | 16.3 |        
   14329 |         MASTER-SAAO |   C |   180 | 18.0 |        
   14509 |         MASTER-SAAO |   C |   540 | 18.5 |  Coadd 
   14529 |         MASTER-SAAO |   C |   180 | 16.8 |        
   14529 |         MASTER-SAAO |   C |   180 | 18.0 |        
   14729 |         MASTER-SAAO |   C |   180 | 17.3 |        
   14909 |         MASTER-SAAO |   C |   540 | 18.3 |  Coadd 
   14729 |         MASTER-SAAO |   C |   180 | 18.1 |        
   14928 |         MASTER-SAAO |   C |   180 | 17.3 |        
   14928 |         MASTER-SAAO |   C |   180 | 18.0 |        
   15128 |         MASTER-SAAO |   C |   180 | 17.7 |        
   15128 |         MASTER-SAAO |   C |   180 | 18.3 |        
   15330 |         MASTER-SAAO |   C |   180 | 18.0 |        
   15330 |         MASTER-SAAO |   C |   180 | 18.7 |        
   15536 |         MASTER-SAAO |   C |   180 | 18.9 |        
   15536 |         MASTER-SAAO |   C |   180 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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


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