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GCN Circular 36709

Subject
Fermi trigger No 740474239: Global MASTER-Net observations report
Date
2024-06-19T23:46:07Z (23 days 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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB240619.30 (trigger No 740474239,06h 14m 24.00s , -76d 58m 58.8s, R=27.1) errorbox  45534 sec after notice time and 45568 sec after trigger time at 2024-06-19 19:56:42 UT, with upper limit up to  17.5 mag. The observations began at zenith distance = 45 deg. The sun  altitude  is -53.1 deg. 

The galactic latitude b = -29 deg., longitude l = 288 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2499525

We obtain a following upper limits.  

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

   45598 | 2024-06-19 19:56:42 |         MASTER-SAAO | (11h 44m 25.60s , -63d 21m 09.1s) |   C |    60 | 17.5 |        
   45677 | 2024-06-19 19:58:01 |         MASTER-SAAO | (12h 02m 18.32s , -63d 22m 41.3s) |   C |    60 | 17.2 |        
   46234 | 2024-06-19 20:07:18 |         MASTER-SAAO | (11h 44m 26.38s , -63d 20m 48.4s) |   C |    60 | 17.4 |        
   46313 | 2024-06-19 20:08:37 |         MASTER-SAAO | (12h 02m 19.59s , -63d 22m 20.0s) |   C |    60 | 17.2 |        
   46709 | 2024-06-19 20:15:13 |         MASTER-SAAO | (11h 32m 55.94s , -61d 27m 23.5s) |   C |    60 | 17.0 |        
   47344 | 2024-06-19 20:25:48 |         MASTER-SAAO | (11h 32m 50.80s , -61d 28m 03.0s) |   C |    60 | 17.0 |        
   48929 | 2024-06-19 20:52:13 |         MASTER-SAAO | (12h 54m 43.46s , -67d 11m 43.8s) |   C |    60 | 17.0 |        
   49009 | 2024-06-19 20:53:32 |         MASTER-SAAO | (13h 15m 11.41s , -67d 10m 59.3s) |   C |    60 | 17.2 |        
   49405 | 2024-06-19 21:00:09 |         MASTER-SAAO | (12h 34m 45.89s , -65d 15m 15.9s) |   C |    60 | 17.2 |        
   49564 | 2024-06-19 21:02:48 |         MASTER-SAAO | (12h 54m 44.04s , -67d 09m 51.2s) |   C |    60 | 17.0 |        
   49644 | 2024-06-19 21:04:08 |         MASTER-SAAO | (13h 15m 09.83s , -67d 11m 22.9s) |   C |    60 | 17.0 |        
   50040 | 2024-06-19 21:10:44 |         MASTER-SAAO | (12h 34m 45.55s , -65d 14m 40.5s) |   C |    60 | 17.2 |        
   50358 | 2024-06-19 21:16:02 |         MASTER-SAAO | (11h 58m 29.22s , -65d 15m 09.8s) |   C |    60 | 17.3 |        
   50437 | 2024-06-19 21:17:21 |         MASTER-SAAO | (12h 17m 39.72s , -65d 15m 17.9s) |   C |    60 | 17.0 |        
   50992 | 2024-06-19 21:26:36 |         MASTER-SAAO | (11h 58m 32.47s , -65d 13m 09.4s) |   C |    60 | 17.3 |        
   51072 | 2024-06-19 21:27:55 |         MASTER-SAAO | (12h 17m 35.49s , -65d 14m 54.8s) |   C |    60 | 17.0 |        
Filter C is a clear (unfiltred) band. 


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


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