Back
GCN Circular 33500

Subject
Fermi trigger No 701071944: Global MASTER-Net observations report
Date
2023-03-22T02:45:12Z (2 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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-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 GRB230321.26 (trigger No 701071944,18h 43m 43.99s , -19d 37m 59.9s, R=12.0167) errorbox  60696 sec after notice time and 60728 sec after trigger time at 2023-03-21 23:04:28 UT, with upper limit up to  17.5 mag. The observations began at zenith distance = 76 deg. The sun  altitude  is -58.0 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB230321.26 errorbox  68634 sec after notice time and 68665 sec after trigger time at 2023-03-22 01:16:45 UT, with upper limit up to  15.8 mag. The observations began at zenith distance = 70 deg. The sun  altitude  is -21.4 deg. 

The galactic latitude b = -8 deg., longitude l = 15 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2205335

We obtain a following upper limits.  

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

   60818 | 2023-03-21 23:04:28 |         MASTER-SAAO | (18h 07m 16.16s , -20d 32m 13.6s) |   C |   180 | 17.5 |        
   61048 | 2023-03-21 23:09:17 |         MASTER-SAAO | (18h 24m 38.91s , -23d 35m 58.2s) |   C |    60 | 16.1 |        
   68756 | 2023-03-22 01:16:45 |   MASTER-Kislovodsk | (18h 11m 32.16s , -20d 37m 06.6s) |   C |   180 | 13.7 |        
   69955 | 2023-03-22 01:37:44 |   MASTER-Kislovodsk | (18h 53m 01.41s , -19d 55m 42.8s) |   C |    60 | 14.9 |        
   70095 | 2023-03-22 01:39:05 |   MASTER-Kislovodsk | (18h 07m 04.29s , -20d 14m 30.0s) |   C |   180 | 12.7 |        
   70095 | 2023-03-22 01:39:05 |   MASTER-Kislovodsk | (18h 11m 28.52s , -20d 38m 23.1s) |   C |   180 | 15.2 |        
   71238 | 2023-03-22 01:59:07 |   MASTER-Kislovodsk | (18h 48m 42.00s , -19d 31m 03.1s) |   C |    60 | 13.3 |        
   71238 | 2023-03-22 01:59:07 |   MASTER-Kislovodsk | (18h 53m 02.71s , -19d 55m 23.8s) |   C |    60 | 15.8 |        
   71519 | 2023-03-22 02:03:48 |   MASTER-Kislovodsk | (18h 40m 25.98s , -18d 02m 02.5s) |   C |    60 | 15.3 |        
   71599 | 2023-03-22 02:05:08 |   MASTER-Kislovodsk | (18h 32m 35.12s , -19d 30m 24.2s) |   C |    60 | 12.7 |        
   71599 | 2023-03-22 02:05:08 |   MASTER-Kislovodsk | (18h 36m 53.99s , -19d 54m 10.7s) |   C |    60 | 15.5 |        
   71679 | 2023-03-22 02:06:29 |   MASTER-Kislovodsk | (18h 50m 52.15s , -21d 49m 53.4s) |   C |    60 | 15.5 |        
   71759 | 2023-03-22 02:07:49 |   MASTER-Kislovodsk | (18h 52m 07.43s , -17d 36m 22.1s) |   C |    60 | 12.4 |        
   71760 | 2023-03-22 02:07:49 |   MASTER-Kislovodsk | (18h 56m 21.29s , -18d 00m 39.8s) |   C |    60 | 15.6 |        
   71840 | 2023-03-22 02:09:09 |   MASTER-Kislovodsk | (18h 40m 43.83s , -15d 42m 54.1s) |   C |    60 | 12.9 |        
   71840 | 2023-03-22 02:09:09 |   MASTER-Kislovodsk | (18h 44m 57.21s , -16d 07m 05.5s) |   C |    60 | 15.4 |        
   72169 | 2023-03-22 02:14:39 |   MASTER-Kislovodsk | (18h 48m 43.97s , -19d 31m 34.6s) |   C |    60 | 12.4 |        
   72169 | 2023-03-22 02:14:39 |   MASTER-Kislovodsk | (18h 53m 05.24s , -19d 55m 47.6s) |   C |    60 | 15.3 |        
   72250 | 2023-03-22 02:15:59 |   MASTER-Kislovodsk | (19h 06m 31.78s , -23d 42m 44.2s) |   C |    60 | 15.1 |        
   72330 | 2023-03-22 02:17:19 |   MASTER-Kislovodsk | (18h 33m 26.42s , -23d 43m 33.2s) |   C |    60 | 13.8 |        
   72410 | 2023-03-22 02:18:40 |   MASTER-Kislovodsk | (18h 24m 29.92s , -17d 59m 56.3s) |   C |    60 | 14.4 |        
   72691 | 2023-03-22 02:23:20 |   MASTER-Kislovodsk | (18h 40m 21.65s , -17d 59m 38.1s) |   C |    60 | 14.2 |        
   72771 | 2023-03-22 02:24:40 |   MASTER-Kislovodsk | (18h 36m 58.68s , -19d 54m 35.4s) |   C |    60 | 14.4 |        
Filter C is a clear (unfiltred) band. 


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