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GCN Circular 36458

Subject
Fermi GRB 240513B: Global MASTER-Net observations report
Date
2024-05-13T17:49:38Z (7 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) started inspect of the Fermi GRB 240513B ( Fermi GBM team, GCN 36456Loading...
 
 ) errorbox  2238 sec after notice time and 2275 sec after trigger time at 2024-05-13 16:59:37 UT, with upper limit up to  18.8 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -20.4 deg. 

The galactic latitude b = -28 deg., longitude l = 114 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2454818

We obtain a following upper limits.  

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

    2305 | 2024-05-13 16:59:37 |        MASTER-Tunka | (23h 50m 52.62s , +38d 11m 33.5s) |   C |    60 | 16.9 |        
    2305 | 2024-05-13 16:59:37 |        MASTER-Tunka | (23h 52m 25.79s , +38d 54m 50.0s) |   C |    60 | 18.1 |        
    2400 | 2024-05-13 17:01:12 |        MASTER-Tunka | (23h 50m 52.86s , +38d 11m 30.5s) |   C |    60 | 17.0 |        
    2401 | 2024-05-13 17:01:12 |        MASTER-Tunka | (23h 52m 26.01s , +38d 54m 49.0s) |   C |    60 | 18.2 |        
    2495 | 2024-05-13 17:02:47 |        MASTER-Tunka | (00h 19m 01.52s , +40d 04m 52.4s) |   C |    60 | 17.1 |        
    2496 | 2024-05-13 17:02:47 |        MASTER-Tunka | (00h 20m 38.34s , +40d 48m 19.1s) |   C |    60 | 18.4 |        
    2587 | 2024-05-13 17:04:18 |        MASTER-Tunka | (23h 51m 06.32s , +40d 06m 20.6s) |   C |    60 | 17.3 |        
    2587 | 2024-05-13 17:04:19 |        MASTER-Tunka | (23h 52m 41.67s , +40d 49m 36.6s) |   C |    60 | 18.5 |        
    2677 | 2024-05-13 17:05:49 |        MASTER-Tunka | (23h 52m 07.48s , +36d 16m 48.3s) |   C |    60 | 16.8 |        
    2677 | 2024-05-13 17:05:49 |        MASTER-Tunka | (23h 53m 38.51s , +37d 00m 11.1s) |   C |    60 | 18.2 |        
    4080 | 2024-05-13 17:29:11 |        MASTER-Tunka | (23h 50m 52.87s , +38d 12m 33.3s) |   C |    60 | 17.4 |        
    4080 | 2024-05-13 17:29:12 |        MASTER-Tunka | (23h 52m 23.89s , +38d 55m 41.9s) |   C |    60 | 18.6 |        
    4168 | 2024-05-13 17:30:40 |        MASTER-Tunka | (00h 00m 38.54s , +40d 48m 39.5s) |   C |    60 | 18.4 |        
    4257 | 2024-05-13 17:32:08 |        MASTER-Tunka | (00h 19m 02.12s , +40d 04m 21.9s) |   C |    60 | 17.4 |        
    4257 | 2024-05-13 17:32:09 |        MASTER-Tunka | (00h 20m 36.55s , +40d 47m 39.6s) |   C |    60 | 18.5 |        
    4347 | 2024-05-13 17:33:39 |        MASTER-Tunka | (23h 51m 14.71s , +40d 04m 36.0s) |   C |    60 | 17.5 |        
    4347 | 2024-05-13 17:33:39 |        MASTER-Tunka | (23h 52m 47.74s , +40d 47m 45.4s) |   C |    60 | 18.8 |        
    4436 | 2024-05-13 17:35:08 |        MASTER-Tunka | (23h 52m 13.16s , +36d 17m 59.5s) |   C |    60 | 17.3 |        
    4437 | 2024-05-13 17:35:09 |        MASTER-Tunka | (23h 53m 42.17s , +37d 01m 12.9s) |   C |    60 | 18.6 |        
    4527 | 2024-05-13 17:36:38 |        MASTER-Tunka | (23h 59m 05.81s , +34d 22m 43.5s) |   C |    60 | 17.3 |        
    4527 | 2024-05-13 17:36:39 |        MASTER-Tunka | (00h 00m 33.40s , +35d 06m 01.5s) |   C |    60 | 18.6 |        
    4619 | 2024-05-13 17:38:11 |        MASTER-Tunka | (00h 18m 09.14s , +36d 17m 50.2s) |   C |    60 | 17.0 |        
    4619 | 2024-05-13 17:38:11 |        MASTER-Tunka | (00h 19m 39.35s , +37d 01m 12.8s) |   C |    60 | 18.4 |        
    4724 | 2024-05-13 17:39:56 |        MASTER-Tunka | (00h 18m 09.42s , +36d 17m 51.1s) |   C |    60 | 17.0 |        
    4724 | 2024-05-13 17:39:56 |        MASTER-Tunka | (00h 19m 39.61s , +37d 01m 13.1s) |   C |    60 | 18.5 |        
    4815 | 2024-05-13 17:41:26 |        MASTER-Tunka | (23h 54m 55.57s , +34d 24m 27.1s) |   C |    60 | 17.3 |        
    4815 | 2024-05-13 17:41:27 |        MASTER-Tunka | (23h 56m 22.86s , +35d 07m 42.7s) |   C |    60 | 18.7 |        
Filter C is a clear (unfiltred) band. 


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