Back
GCN Circular 37636

Subject
Fermi GRB 240930A: Global MASTER-Net observations report
Date
2024-09-30T05:00:35Z (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 240930A ( Fermi GBM team, GCN 37633Loading...
 
 ) errorbox  592 sec after notice time and 604 sec after trigger time at 2024-09-30 04:17:58 UT, with upper limit up to  19.9 mag. The observations began at zenith distance = 66 deg. The sun  altitude  is -56.1 deg. 

The galactic latitude b = -19 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=2619664

We obtain a following upper limits.  

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

     664 | 2024-09-30 04:17:58 |         MASTER-OAFA | (11h 40m 44.68s , -82d 44m 35.9s) |   C |   120 | 18.4 |        
     665 | 2024-09-30 04:17:58 |         MASTER-OAFA | (12h 46m 17.12s , -82d 00m 09.9s) |   C |   120 | 19.9 |        
     819 | 2024-09-30 04:20:17 |         MASTER-OAFA | (11h 40m 41.23s , -82d 44m 37.7s) |   C |   150 | 18.5 |        
     819 | 2024-09-30 04:20:18 |         MASTER-OAFA | (12h 46m 15.24s , -82d 00m 12.8s) |   C |   150 | 19.9 |        
    1004 | 2024-09-30 04:23:07 |         MASTER-OAFA | (11h 40m 38.32s , -82d 44m 40.7s) |   C |   180 | 18.3 |        
    1004 | 2024-09-30 04:23:07 |         MASTER-OAFA | (12h 46m 13.12s , -82d 00m 16.7s) |   C |   180 | 19.6 |        
    1203 | 2024-09-30 04:26:27 |         MASTER-OAFA | (11h 40m 35.13s , -82d 44m 45.0s) |   C |   180 | 18.6 |        
    1204 | 2024-09-30 04:26:27 |         MASTER-OAFA | (12h 46m 10.84s , -82d 00m 21.1s) |   C |   180 | 19.9 |        
    1403 | 2024-09-30 04:29:46 |         MASTER-OAFA | (11h 40m 32.39s , -82d 44m 49.6s) |   C |   180 | 18.5 |        
    1403 | 2024-09-30 04:29:47 |         MASTER-OAFA | (12h 46m 08.46s , -82d 00m 25.2s) |   C |   180 | 19.9 |        
Filter C is a clear (unfiltred) band. 


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