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GCN Circular 36014

Subject
Fermi trigger No 733808041: Global MASTER-Net observations report
Date
2024-04-03T05:46:31Z (16 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 GRB240403.15 (trigger No 733808041,15h 03m 19.20s , +39d 09m 36.0s, R=5.79) errorbox 5 sec after trigger time at 2024-04-03 03:34:02 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -17.2 deg. 

The galactic latitude b = 60 deg., longitude l = 65 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2413499

We obtain a following upper limits.  

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

      36 | 2024-04-03 03:34:02 |         MASTER-SAAO | (15h 20m 07.21s , +39d 22m 12.9s) |   C |    60 | 17.4 |        
      36 | 2024-04-03 03:34:02 |         MASTER-SAAO | (15h 22m 18.15s , +39d 09m 00.4s) |   C |    60 | 17.8 |        
     674 | 2024-04-03 03:44:39 |         MASTER-SAAO | (15h 17m 31.00s , +37d 15m 40.2s) |   C |    60 | 17.6 |        
     674 | 2024-04-03 03:44:39 |         MASTER-SAAO | (15h 15m 23.12s , +37d 28m 50.8s) |   C |    60 | 17.1 |        
Filter C is a clear (unfiltred) band. 


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


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