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GCN Circular 37671

Subject
Fermi GRB 241002B: Global MASTER-Net observations report
Date
2024-10-02T08:30:40Z (2 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-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 241002B ( Fermi GBM team, GCN 37668Loading...
 
 ) errorbox  109 sec after notice time and 140 sec after trigger time at 2024-10-02 06:16:39 UT, with upper limit up to  20.2 mag. The observations began at zenith distance = 46 deg. The sun  altitude  is -46.2 deg. 

The galactic latitude b = -46 deg., longitude l = 326 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2622469

We obtain a following upper limits.  

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

     156 | 2024-10-02 06:16:39 |         MASTER-OAFA | (22h 55m 46.58s , -64d 18m 23.5s) |   C |    30 | 19.2 |        
     211 | 2024-10-02 06:17:29 |         MASTER-OAFA | (22h 55m 46.87s , -64d 18m 23.8s) |   C |    40 | 19.3 |        
     275 | 2024-10-02 06:18:28 |         MASTER-OAFA | (22h 55m 47.17s , -64d 18m 24.2s) |   C |    50 | 19.0 |        
     350 | 2024-10-02 06:19:38 |         MASTER-OAFA | (22h 55m 47.59s , -64d 18m 24.2s) |   C |    60 | 19.6 |        
     642 | 2024-10-02 06:24:00 |         MASTER-OAFA | (22h 35m 58.92s , -63d 55m 04.6s) |   C |   120 | 19.1 |        
     642 | 2024-10-02 06:24:00 |         MASTER-OAFA | (22h 15m 05.38s , -64d 13m 49.3s) |   C |   120 | 20.1 |        
     791 | 2024-10-02 06:26:20 |         MASTER-OAFA | (22h 35m 59.49s , -63d 55m 06.9s) |   C |   140 | 19.2 |        
     792 | 2024-10-02 06:26:20 |         MASTER-OAFA | (22h 15m 06.01s , -64d 13m 50.4s) |   C |   140 | 19.6 |        
     971 | 2024-10-02 06:28:59 |         MASTER-OAFA | (22h 36m 00.21s , -63d 55m 09.0s) |   C |   180 | 19.3 |        
     971 | 2024-10-02 06:28:59 |         MASTER-OAFA | (22h 15m 06.82s , -64d 13m 51.6s) |   C |   180 | 20.2 |        
Filter C is a clear (unfiltred) band. 


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