Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 34390

Subject
LAT GRB230812.79: Global MASTER-Net observations report
Date
2023-08-13T01:00:33Z (8 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, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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. Gres, N.M. Budnev
(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),

A. Gabovich, V.Yurkov 
(Blagoveschensk Educational State University)


MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the LAT GRB230812.79 (trigger No 230812790,16h 35m 45.60s , +47d 56m 42.0s, R=0.172833) errorbox 10713 sec after trigger time at 2023-08-12 21:56:45 UT, with upper limit up to  19.3 mag. The observations began at zenith distance = 50 deg. The sun  altitude  is -31.0 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) was pointed to the LAT GRB230812.79 errorbox 15682 sec after trigger time at 2023-08-12 23:19:34 UT, with upper limit up to  18.2 mag. Observations started at twilight.  The observations began at zenith distance = 78 deg. The sun  altitude  is -16.0 deg. 

The galactic latitude b = 42 deg., longitude l = 74 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2253603

We obtain a following upper limits.  

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

   10804 | 2023-08-12 21:56:45 |      MASTER-Tavrida | (16h 41m 41.24s , +46d 23m 36.1s) |   C |   180 | 19.3 |        
   10992 | 2023-08-12 21:59:54 |      MASTER-Tavrida | (16h 41m 46.04s , +46d 22m 29.1s) |   C |   180 | 19.1 |        
   11111 | 2023-08-12 22:03:07 |      MASTER-Tavrida | (16h 41m 40.73s , +46d 21m 24.6s) |   C |    30 | 17.8 |        
   11151 | 2023-08-12 22:03:47 |      MASTER-Tavrida | (16h 41m 47.62s , +46d 21m 41.9s) |   C |    30 | 17.8 |        
   11189 | 2023-08-12 22:04:25 |      MASTER-Tavrida | (16h 41m 44.53s , +46d 23m 10.6s) |   C |    30 | 17.9 |        
   11227 | 2023-08-12 22:05:04 |      MASTER-Tavrida | (16h 41m 44.48s , +46d 21m 32.8s) |   C |    30 | 17.8 |        
   11267 | 2023-08-12 22:05:43 |      MASTER-Tavrida | (16h 41m 47.52s , +46d 22m 59.5s) |   C |    30 | 17.8 |        
   11304 | 2023-08-12 22:06:21 |      MASTER-Tavrida | (16h 41m 40.68s , +46d 22m 18.0s) |   C |    30 | 17.8 |        
   11343 | 2023-08-12 22:06:59 |      MASTER-Tavrida | (16h 41m 41.50s , +46d 23m 16.6s) |   C |    30 | 18.0 |        
   11381 | 2023-08-12 22:07:38 |      MASTER-Tavrida | (16h 41m 47.28s , +46d 22m 15.3s) |   C |    30 | 17.8 |        
   11495 | 2023-08-12 22:08:17 |      MASTER-Tavrida | (16h 39m 42.09s , +46d 39m 09.7s) |   C |   180 | 19.0 |        
   11683 | 2023-08-12 22:11:25 |      MASTER-Tavrida | (16h 39m 49.58s , +46d 39m 04.4s) |   C |   180 | 19.0 |        
   12443 | 2023-08-12 22:24:04 |      MASTER-Tavrida | (16h 42m 43.40s , +47d 09m 33.2s) |   C |   180 | 19.2 |        
   12630 | 2023-08-12 22:27:11 |      MASTER-Tavrida | (16h 42m 43.44s , +47d 10m 26.3s) |   C |   180 | 19.0 |        
   12822 | 2023-08-12 22:30:24 |      MASTER-Tavrida | (16h 37m 35.03s , +46d 09m 23.7s) |   C |   180 | 18.7 |        
   13010 | 2023-08-12 22:33:32 |      MASTER-Tavrida | (16h 37m 29.92s , +46d 08m 17.3s) |   C |   180 | 18.6 |        
   13202 | 2023-08-12 22:36:44 |      MASTER-Tavrida | (16h 29m 37.44s , +46d 08m 30.0s) |   C |   180 | 18.7 |        
   13389 | 2023-08-12 22:39:51 |      MASTER-Tavrida | (16h 29m 33.96s , +46d 09m 50.2s) |   C |   180 | 18.7 |        
   13961 | 2023-08-12 22:49:23 |      MASTER-Tavrida | (16h 29m 36.75s , +47d 38m 29.9s) |   C |   180 | 18.7 |        
   14149 | 2023-08-12 22:52:30 |      MASTER-Tavrida | (16h 29m 37.60s , +47d 39m 23.6s) |   C |   180 | 18.6 |        
   15563 | 2023-08-12 23:16:04 |      MASTER-Tavrida | (16h 41m 55.05s , +46d 19m 46.5s) |   C |   180 | 18.3 |        
   15750 | 2023-08-12 23:19:12 |      MASTER-Tavrida | (16h 41m 50.04s , +46d 18m 40.4s) |   C |   180 | 18.3 |        
   15712 | 2023-08-12 23:19:34 |         MASTER-OAFA | (16h 32m 37.39s , +46d 49m 30.8s) |   C |    60 | 17.3 |        
   15823 | 2023-08-12 23:21:25 |         MASTER-OAFA | (16h 44m 16.19s , +46d 50m 30.3s) |   C |    60 | 17.4 |        
   16022 | 2023-08-12 23:24:44 |      MASTER-Tavrida | (16h 45m 47.32s , +48d 24m 35.8s) |   C |    60 | 18.3 |        
   16093 | 2023-08-12 23:25:54 |      MASTER-Tavrida | (16h 45m 51.22s , +48d 25m 57.5s) |   C |    60 | 18.3 |        
   16165 | 2023-08-12 23:27:06 |      MASTER-Tavrida | (16h 37m 46.75s , +48d 25m 03.8s) |   C |    60 | 18.1 |        
   16234 | 2023-08-12 23:28:15 |      MASTER-Tavrida | (16h 37m 47.03s , +48d 26m 00.9s) |   C |    60 | 18.1 |        
   16305 | 2023-08-12 23:29:26 |      MASTER-Tavrida | (16h 37m 47.02s , +47d 07m 12.8s) |   C |    60 | 17.7 |        
   16375 | 2023-08-12 23:30:36 |      MASTER-Tavrida | (16h 37m 41.37s , +47d 06m 10.6s) |   C |    60 | 17.7 |        
   16507 | 2023-08-12 23:31:48 |      MASTER-Tavrida | (16h 41m 57.87s , +46d 18m 31.8s) |   C |   180 | 18.3 |        
   16639 | 2023-08-12 23:35:00 |      MASTER-Tavrida | (16h 33m 49.28s , +48d 07m 40.9s) |   C |    60 | 17.9 |        
   16708 | 2023-08-12 23:36:10 |      MASTER-Tavrida | (16h 33m 49.34s , +48d 05m 48.0s) |   C |    60 | 17.9 |        
   16792 | 2023-08-12 23:37:34 |         MASTER-OAFA | (16h 32m 29.87s , +46d 50m 00.3s) |   C |    60 | 17.4 |        
   16903 | 2023-08-12 23:39:25 |         MASTER-OAFA | (16h 44m 13.26s , +46d 50m 40.8s) |   C |    60 | 17.5 |        
   17581 | 2023-08-12 23:50:43 |      MASTER-Tavrida | (16h 41m 57.02s , +48d 54m 55.2s) |   C |    60 | 17.9 |        
   17652 | 2023-08-12 23:51:54 |      MASTER-Tavrida | (16h 41m 51.05s , +48d 54m 01.4s) |   C |    60 | 17.8 |        
   18078 | 2023-08-12 23:58:59 |         MASTER-OAFA | (16h 31m 15.33s , +49d 01m 01.6s) |   C |    60 | 17.2 |        
   18292 | 2023-08-13 00:01:33 |      MASTER-Tavrida | (16h 41m 50.91s , +48d 05m 48.1s) |   C |   180 | 18.1 |        
   18411 | 2023-08-13 00:04:33 |         MASTER-OAFA | (16h 32m 35.81s , +46d 50m 46.2s) |   C |    60 | 17.5 |        
   18479 | 2023-08-13 00:04:41 |      MASTER-Tavrida | (16h 41m 51.27s , +48d 06m 41.4s) |   C |   180 | 18.2 |        
   18523 | 2023-08-13 00:06:24 |         MASTER-OAFA | (16h 44m 10.88s , +46d 49m 31.0s) |   C |    60 | 17.8 |        
   18671 | 2023-08-13 00:07:52 |      MASTER-Tavrida | (16h 33m 50.96s , +46d 35m 56.8s) |   C |   180 | 17.6 |        
   18694 | 2023-08-13 00:08:16 |         MASTER-OAFA | (16h 39m 21.33s , +46d 14m 36.3s) |   C |   180 | 18.2 |        
   18859 | 2023-08-13 00:11:00 |      MASTER-Tavrida | (16h 33m 45.72s , +46d 34m 51.4s) |   C |   180 | 17.7 |        
   19496 | 2023-08-13 00:22:38 |      MASTER-Tavrida | (16h 25m 59.99s , +47d 36m 01.5s) |   C |    60 | 17.6 |        
   19564 | 2023-08-13 00:23:45 |      MASTER-Tavrida | (16h 25m 55.13s , +47d 35m 16.9s) |   C |    60 | 17.6 |        
   20964 | 2023-08-13 00:46:06 |         MASTER-OAFA | (16h 34m 57.91s , +47d 57m 55.1s) |   C |   180 | 18.1 |        
Filter C is a clear (unfiltred) band. 


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


Looking for U.S. government information and services? Visit USA.gov