Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 30461

Subject
Fermi trigger No 647942198: Global MASTER-Net observations report
Date
2021-07-14T08:45:21Z (3 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, 
V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,
D.Kuvshinov,  D. Cheryasov
(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, O.Ershova 
(Irkutsk State University, API),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

V. Yurkov, A. Gabovich, Yu. Sergienko 
(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 GRB210714.33 (trigger No 647942198,20h 46m 43.20s , -52d 12m 36.0s, R=1.38) errorbox  150 sec after notice time and 181 sec after trigger time at 2021-07-14 07:59:34 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 34 deg. The sun  altitude  is -44.8 deg. 

The galactic latitude b = -39 deg., longitude l = 346 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1659661

We obtain a following upper limits.  

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

     196 | 2021-07-14 07:59:34 |         MASTER-OAFA | (20h 33m 33.17s , -53d 29m 04.8s) |   C |    30 | 18.0 |        
     246 | 2021-07-14 08:00:23 |         MASTER-OAFA | (20h 33m 28.47s , -53d 30m 03.6s) |   C |    30 | 18.0 |        
     300 | 2021-07-14 08:01:13 |         MASTER-OAFA | (20h 33m 28.55s , -53d 29m 06.3s) |   C |    40 | 18.3 |        
     370 | 2021-07-14 08:02:13 |         MASTER-OAFA | (20h 33m 34.72s , -53d 30m 07.6s) |   C |    60 | 18.6 |        
     454 | 2021-07-14 08:03:32 |         MASTER-OAFA | (20h 33m 28.23s , -53d 31m 09.1s) |   C |    70 | 18.6 |        
     554 | 2021-07-14 08:05:02 |         MASTER-OAFA | (20h 33m 34.36s , -53d 30m 49.9s) |   C |    90 | 18.9 |        
     673 | 2021-07-14 08:06:51 |         MASTER-OAFA | (20h 33m 31.10s , -53d 29m 20.2s) |   C |   110 | 19.1 |        
     818 | 2021-07-14 08:09:00 |         MASTER-OAFA | (20h 42m 20.91s , -53d 00m 05.1s) |   C |   140 | 19.3 |        
     992 | 2021-07-14 08:11:40 |         MASTER-OAFA | (20h 42m 24.82s , -52d 58m 24.5s) |   C |   170 | 19.4 |        
    1187 | 2021-07-14 08:14:49 |         MASTER-OAFA | (20h 42m 17.44s , -52d 59m 16.4s) |   C |   180 | 19.4 |        
    1386 | 2021-07-14 08:18:09 |         MASTER-OAFA | (20h 42m 18.37s , -52d 58m 17.4s) |   C |   180 | 19.4 |        
    1585 | 2021-07-14 08:21:28 |         MASTER-OAFA | (20h 42m 23.61s , -52d 59m 18.9s) |   C |   180 | 19.5 |        
    1785 | 2021-07-14 08:24:47 |         MASTER-OAFA | (20h 42m 17.69s , -53d 00m 19.2s) |   C |   180 | 19.4 |        
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