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GCN Circular 36748

Subject
Fermi trigger No 740949590: Global MASTER-Net observations report
Date
2024-06-25T02:27:05Z (18 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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB240624.81 (trigger No 740949590,16h 01m 57.60s , -07d 12m 36.0s, R=4.3) errorbox  106 sec after notice time and 140 sec after trigger time at 2024-06-24 19:22:05 UT, with upper limit up to  19.0 mag. The observations began at zenith distance = 49 deg. The sun  altitude  is -18.8 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB240624.81 errorbox  110 sec after notice time and 144 sec after trigger time at 2024-06-24 19:22:09 UT, with upper limit up to  19.1 mag. Observations started at twilight.  The observations began at zenith distance = 50 deg. The sun  altitude  is -15.1 deg. 

The galactic latitude b = 32 deg., longitude l =  4 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2506099

We obtain a following upper limits.  

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

     156 | 2024-06-24 19:22:05 |   MASTER-Kislovodsk | (16h 02m 37.86s , -06d 14m 58.4s) |   C |    30 | 17.4 |        
     201 | 2024-06-24 19:22:05 |   MASTER-Kislovodsk | (16h 02m 37.86s , -06d 14m 58.4s) |   C |   120 | 18.3 |  Coadd 
     159 | 2024-06-24 19:22:09 |      MASTER-Tavrida | (15h 58m 01.77s , -06d 17m 14.9s) |   C |    30 | 18.1 |        
     205 | 2024-06-24 19:22:50 |      MASTER-Tavrida | (15h 57m 55.72s , -06d 18m 17.1s) |   C |    40 | 18.3 |        
     215 | 2024-06-24 19:23:00 |   MASTER-Kislovodsk | (16h 02m 42.89s , -06d 14m 41.2s) |   C |    40 | 17.6 |        
     263 | 2024-06-24 19:23:42 |      MASTER-Tavrida | (15h 58m 01.91s , -06d 17m 53.1s) |   C |    50 | 18.4 |        
     279 | 2024-06-24 19:23:59 |   MASTER-Kislovodsk | (16h 02m 39.65s , -06d 13m 13.2s) |   C |    50 | 17.8 |        
     327 | 2024-06-24 19:24:41 |      MASTER-Tavrida | (15h 57m 59.82s , -06d 16m 42.2s) |   C |    60 | 18.7 |        
     354 | 2024-06-24 19:25:09 |   MASTER-Kislovodsk | (16h 02m 39.66s , -06d 14m 36.2s) |   C |    60 | 18.0 |        
     648 | 2024-06-24 19:29:33 |      MASTER-Tavrida | (15h 45m 44.69s , -07d 17m 46.4s) |   C |   120 | 18.3 |        
     790 | 2024-06-24 19:31:45 |      MASTER-Tavrida | (15h 45m 49.86s , -07d 17m 43.0s) |   C |   140 | 18.7 |        
     957 | 2024-06-24 19:34:17 |      MASTER-Tavrida | (15h 45m 47.40s , -07d 15m 55.9s) |   C |   170 | 18.9 |        
    1143 | 2024-06-24 19:37:18 |      MASTER-Tavrida | (15h 45m 47.40s , -07d 17m 50.5s) |   C |   180 | 19.1 |        
    2367 | 2024-06-24 19:57:42 |   MASTER-Kislovodsk | (16h 02m 44.21s , -07d 08m 10.0s) |   C |   180 | 17.9 |        
    2376 | 2024-06-24 19:57:51 |      MASTER-Tavrida | (15h 57m 56.33s , -07d 09m 45.5s) |   C |   180 | 18.2 |        
    2566 | 2024-06-24 20:01:01 |   MASTER-Kislovodsk | (16h 02m 38.37s , -07d 09m 18.1s) |   C |   180 | 18.3 |        
    2746 | 2024-06-24 20:01:01 |   MASTER-Kislovodsk | (16h 02m 38.36s , -07d 09m 18.2s) |   C |   540 | 19.0 |  Coadd 
    2569 | 2024-06-24 20:01:04 |      MASTER-Tavrida | (15h 58m 02.32s , -07d 10m 53.6s) |   C |   180 | 18.7 |        
    2758 | 2024-06-24 20:04:12 |      MASTER-Tavrida | (15h 57m 55.92s , -07d 11m 56.3s) |   C |   180 | 18.6 |        
    2766 | 2024-06-24 20:04:21 |   MASTER-Kislovodsk | (16h 02m 45.37s , -07d 09m 07.1s) |   C |   180 | 18.2 |        
    2949 | 2024-06-24 20:07:24 |      MASTER-Tavrida | (15h 58m 03.17s , -07d 11m 42.0s) |   C |   180 | 16.2 |        
    2966 | 2024-06-24 20:07:41 |   MASTER-Kislovodsk | (16h 02m 41.55s , -07d 07m 40.7s) |   C |   180 | 18.4 |        
Filter C is a clear (unfiltred) band. 


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


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