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GCN Circular 34701

Subject
Fermi trigger No 716449174: Global MASTER-Net observations report
Date
2023-09-15T06:18:22Z (9 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 GRB230915.24 (trigger No 716449174,00h 28m 19.92s , -48d 49m 01.2s, R=28.88) errorbox  10 sec after notice time and 23 sec after trigger time at 2023-09-15 05:39:52 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 20 deg. The sun  altitude  is -57.7 deg. 

The galactic latitude b = -68 deg., longitude l = 312 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2270584

We obtain a following upper limits.  

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

      53 | 2023-09-15 05:39:52 |         MASTER-OAFA | (00h 16m 01.88s , -50d 08m 09.1s) |   C |    60 | 19.0 |        
     133 | 2023-09-15 05:41:12 |         MASTER-OAFA | (00h 28m 31.97s , -50d 09m 39.4s) |   C |    60 | 19.2 |        
     213 | 2023-09-15 05:42:32 |         MASTER-OAFA | (00h 39m 43.26s , -50d 08m 35.6s) |   C |    60 | 19.2 |        
     292 | 2023-09-15 05:43:51 |         MASTER-OAFA | (01h 21m 01.89s , -59d 37m 59.6s) |   C |    60 | 18.6 |        
     372 | 2023-09-15 05:45:11 |         MASTER-OAFA | (00h 52m 14.52s , -50d 09m 31.0s) |   C |    60 | 18.9 |        
     451 | 2023-09-15 05:46:30 |         MASTER-OAFA | (01h 36m 53.70s , -59d 38m 27.6s) |   C |    60 | 18.7 |        
     531 | 2023-09-15 05:47:50 |         MASTER-OAFA | (01h 25m 59.80s , -61d 32m 31.0s) |   C |    60 | 18.5 |        
     611 | 2023-09-15 05:49:10 |         MASTER-OAFA | (00h 38m 16.17s , -48d 14m 09.2s) |   C |    60 | 19.2 |        
     690 | 2023-09-15 05:50:29 |         MASTER-OAFA | (01h 42m 46.63s , -61d 31m 41.5s) |   C |    60 | 18.6 |        
     770 | 2023-09-15 05:51:49 |         MASTER-OAFA | (00h 45m 40.45s , -55d 50m 34.9s) |   C |    60 | 18.6 |        
     850 | 2023-09-15 05:53:09 |         MASTER-OAFA | (00h 50m 12.80s , -48d 15m 39.3s) |   C |    60 | 18.9 |        
     929 | 2023-09-15 05:54:28 |         MASTER-OAFA | (00h 16m 04.91s , -50d 09m 37.6s) |   C |    60 | 18.9 |        
    1009 | 2023-09-15 05:55:48 |         MASTER-OAFA | (00h 28m 32.00s , -50d 08m 03.1s) |   C |    60 | 19.2 |        
    1089 | 2023-09-15 05:57:08 |         MASTER-OAFA | (00h 59m 54.01s , -55d 51m 04.7s) |   C |    60 | 18.6 |        
    1168 | 2023-09-15 05:58:27 |         MASTER-OAFA | (00h 39m 50.80s , -50d 08m 12.4s) |   C |    60 | 19.1 |        
    1247 | 2023-09-15 05:59:46 |         MASTER-OAFA | (01h 20m 56.39s , -59d 38m 06.9s) |   C |    60 | 18.6 |        
    1327 | 2023-09-15 06:01:06 |         MASTER-OAFA | (00h 52m 13.69s , -50d 07m 38.0s) |   C |    60 | 19.0 |        
    1407 | 2023-09-15 06:02:26 |         MASTER-OAFA | (01h 36m 55.05s , -59d 37m 52.1s) |   C |    60 | 18.6 |        
    1486 | 2023-09-15 06:03:45 |         MASTER-OAFA | (01h 25m 58.24s , -61d 33m 01.5s) |   C |    60 | 18.5 |        
    1566 | 2023-09-15 06:05:05 |         MASTER-OAFA | (01h 42m 52.77s , -61d 32m 33.6s) |   C |    60 | 18.6 |        
    1645 | 2023-09-15 06:06:24 |         MASTER-OAFA | (00h 45m 38.47s , -55d 49m 50.9s) |   C |    60 | 18.7 |        
    1725 | 2023-09-15 06:07:44 |         MASTER-OAFA | (00h 59m 54.69s , -55d 51m 20.1s) |   C |    60 | 18.6 |        
Filter C is a clear (unfiltred) band. 


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


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