Back
GCN Circular 35405

Subject
Fermi trigger No 724698747: Global MASTER-Net observations report
Date
2023-12-19T20:30:38Z (5 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-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) started inspect of the Fermi GRB231219.72 (trigger No 724698747,15h 26m 33.60s , +58d 00m 00.0s, R=14.25) errorbox  10878 sec after notice time and 10910 sec after trigger time at 2023-12-19 20:14:13 UT, with upper limit up to  16.5 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -63.0 deg. 

MASTER-Tunka robotic telescope  located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB231219.72 errorbox  11399 sec after notice time and 11431 sec after trigger time at 2023-12-19 20:22:53 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -43.0 deg. 

The galactic latitude b = 49 deg., longitude l = 92 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2337422

We obtain a following upper limits.  

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

   10940 | 2023-12-19 20:14:13 |      MASTER-Tavrida | (16h 53m 20.35s , +56d 06m 31.3s) |   C |    60 | 16.5 |        
   11461 | 2023-12-19 20:22:53 |        MASTER-Tunka | (17h 13m 36.54s , +56d 07m 11.7s) |   C |    60 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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