Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 35346

Subject
Swift GRB231215.41: Global MASTER-Net observations report
Date
2023-12-15T11:41:18Z (4 months 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-Tunka robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB231215.41 (trigger No 1202522,00h 39m 00.00s , +57d 38m 31.2s, R=0.05) errorbox  2511 sec after notice time and 2545 sec after trigger time at 2023-12-15 10:29:50 UT, with upper limit up to  19.6 mag. Observations started at twilight.  The observations began at zenith distance = 16 deg. The sun  altitude  is -13.1 deg. 

The galactic latitude b = -5 deg., longitude l = 122 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2333312

We obtain a following upper limits.  

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

    2590 |        MASTER-Tunka |   C |    90 | 19.2 |        
    2625 |        MASTER-Tunka |   C |   160 | 19.3 |  Coadd 
    2769 |        MASTER-Tunka |   C |    10 | 19.0 |        
    2779 |        MASTER-Tunka |   C |    30 | 19.4 |  Coadd 
    2874 |        MASTER-Tunka |   C |   220 | 19.5 |  Coadd 
    2783 |        MASTER-Tunka |   C |    10 | 19.1 |        
    2797 |        MASTER-Tunka |   C |    10 | 19.1 |        
    2816 |        MASTER-Tunka |   C |    20 | 19.4 |        
    2841 |        MASTER-Tunka |   C |    70 | 19.6 |  Coadd 
    2840 |        MASTER-Tunka |   C |    20 | 19.3 |        
    2869 |        MASTER-Tunka |   C |    30 | 19.4 |        
    2903 |        MASTER-Tunka |   C |    30 | 19.4 |        
    2942 |        MASTER-Tunka |   C |    40 | 18.7 |        
    2991 |        MASTER-Tunka |   C |    50 | 18.9 |        
    3051 |        MASTER-Tunka |   C |   170 | 19.5 |  Coadd 
    3050 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3114 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3178 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3242 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3306 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3369 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3433 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3497 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3561 |        MASTER-Tunka |   C |    60 | 19.6 |        
    3625 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3688 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3752 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3816 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3880 |        MASTER-Tunka |   C |    60 | 19.5 |        
    3944 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4008 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4071 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4135 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4200 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4264 |        MASTER-Tunka |   C |    60 | 19.6 |        
    4328 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4392 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4455 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4520 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4583 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4647 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4711 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4775 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4839 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4902 |        MASTER-Tunka |   C |    60 | 19.1 |        
    4966 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5030 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5094 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5157 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5221 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5285 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5349 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5412 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5476 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5541 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5605 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5669 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5732 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5796 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5860 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5924 |        MASTER-Tunka |   C |    60 | 19.1 |        
    5987 |        MASTER-Tunka |   C |    60 | 19.1 |        
    6051 |        MASTER-Tunka |   C |    60 | 19.1 |        
    6115 |        MASTER-Tunka |   C |    60 | 19.1 |        
    6179 |        MASTER-Tunka |   C |    60 | 19.1 |        
    6243 |        MASTER-Tunka |   C |    60 | 19.1 |        
    6307 |        MASTER-Tunka |   C |    60 | 19.1 |        
Filter C is a clear (unfiltred) band. 


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


Looking for U.S. government information and services? Visit USA.gov