[vsnet-grb-info 22067] Fermi GRB190425.09 Global MASTER-Net observations report

GCN Circulars gcncirc at capella2.gsfc.nasa.gov
Thu Apr 25 13:01:25 JST 2019 

TITLE:   GCN CIRCULAR
NUMBER:  24166
SUBJECT: Fermi GRB190425.09 Global MASTER-Net observations report 
DATE:    19/04/25 04:01:17 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at xray.sai.msu.ru>

V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina, P.Balanutsa,
A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University,
Sternberg Astronomical Institute, Moscow State University

A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory

K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk
Irkutsk State University

V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk

R. Podesta, Carlos Lopez and F. Podesta
Observatorio Astronomico Felix Aguilar (OAFA)

Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)

R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias

D. Buckley, S. Potter, A. Kniazev, M. Kotze
South African Astronomical Observatory



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 GRB190425.09 ( 21h 37m 19.20s , -37d 28m 48.00s, R=11.56) errorbox  566 sec after trigger time at 2019-04-25 02:17:09 UT, with upper limit up to  19.1 mag. The observations began at zenit distance = 47 deg. The sun  altitude  is -36.3 deg. 

The galactic latitude b = -60 deg., longitude l = 98 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1003237

We obtain a following upper limits.  

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

     596 | 2019-04-25 02:17:09 |         MASTER-SAAO | ( 21h 34m 20.84s , -38d  2m 42.95s) |   C |    60 | 18.8 |        
     693 | 2019-04-25 02:18:45 |         MASTER-SAAO | ( 21h 29m 39.65s , -40d  2m 18.63s) |   C |    60 | 18.9 |        
    1228 | 2019-04-25 02:27:41 |         MASTER-SAAO | ( 21h 34m 21.78s , -38d  2m 23.33s) |   C |    60 | 18.8 |        
    1325 | 2019-04-25 02:29:18 |         MASTER-SAAO | ( 21h 44m 29.54s , -38d  2m 30.42s) |   C |    60 | 18.9 |        
    1422 | 2019-04-25 02:30:54 |         MASTER-SAAO | ( 21h 29m 40.80s , -40d  2m 38.63s) |   C |    60 | 18.8 |        
    1518 | 2019-04-25 02:32:30 |         MASTER-SAAO | ( 21h 40m 08.69s , -40d  2m 48.97s) |   C |    60 | 19.0 |        
    1837 | 2019-04-25 02:37:49 |         MASTER-SAAO | ( 21h 44m 30.30s , -38d  2m 31.73s) |   C |    60 | 18.8 |        
    1936 | 2019-04-25 02:39:29 |         MASTER-SAAO | ( 21h 40m 07.91s , -40d  2m 49.36s) |   C |    60 | 19.0 |        
    2034 | 2019-04-25 02:41:06 |         MASTER-SAAO | ( 21h 40m 20.21s , -36d  2m 21.04s) |   C |    60 | 18.8 |        
    2131 | 2019-04-25 02:42:44 |         MASTER-SAAO | ( 21h 50m 34.94s , -40d  2m 56.09s) |   C |    60 | 18.9 |        
    2228 | 2019-04-25 02:44:20 |         MASTER-SAAO | ( 21h 54m 41.40s , -38d  2m 36.87s) |   C |    60 | 18.9 |        
    2326 | 2019-04-25 02:45:58 |         MASTER-SAAO | ( 21h 28m 13.52s , -34d  2m 24.41s) |   C |    60 | 18.9 |        
    2422 | 2019-04-25 02:47:34 |         MASTER-SAAO | ( 21h 40m 20.71s , -36d  2m 39.02s) |   C |    60 | 18.8 |        
    2517 | 2019-04-25 02:49:09 |         MASTER-SAAO | ( 21h 50m 14.09s , -36d  2m 28.11s) |   C |    60 | 18.9 |        
    2668 | 2019-04-25 02:51:41 |         MASTER-SAAO | ( 21h 50m 36.13s , -40d  2m 55.06s) |   C |    60 | 19.0 |        
    2766 | 2019-04-25 02:53:19 |         MASTER-SAAO | ( 22h  1m 03.70s , -40d  3m 04.59s) |   C |    60 | 18.9 |        
    2862 | 2019-04-25 02:54:54 |         MASTER-SAAO | ( 21h 54m 42.35s , -38d  2m 36.20s) |   C |    60 | 18.7 |        
    2957 | 2019-04-25 02:56:30 |         MASTER-SAAO | ( 22h  4m 50.11s , -38d  2m 44.39s) |   C |    60 | 18.7 |        
    3055 | 2019-04-25 02:58:08 |         MASTER-SAAO | ( 21h 28m 14.41s , -34d  2m 24.86s) |   C |    60 | 19.0 |        
    3151 | 2019-04-25 02:59:43 |         MASTER-SAAO | ( 21h 37m 54.44s , -34d  2m 34.33s) |   C |    60 | 18.8 |        
    3250 | 2019-04-25 03:01:23 |         MASTER-SAAO | ( 21h 50m 15.05s , -36d  2m 28.15s) |   C |    60 | 18.9 |        
    3347 | 2019-04-25 03:02:59 |         MASTER-SAAO | ( 22h  1m 03.50s , -40d  2m 43.96s) |   C |    60 | 18.9 |        
    3445 | 2019-04-25 03:04:37 |         MASTER-SAAO | ( 22h  4m 50.79s , -38d  3m 04.78s) |   C |    60 | 18.9 |        
    3542 | 2019-04-25 03:06:14 |         MASTER-SAAO | ( 21h 37m 54.90s , -34d  2m 34.49s) |   C |    60 | 19.0 |        
    3640 | 2019-04-25 03:07:53 |         MASTER-SAAO | ( 21h 26m 24.64s , -42d  2m 26.03s) |   C |    60 | 19.0 |        
    3739 | 2019-04-25 03:09:32 |         MASTER-SAAO | ( 21h 47m 34.32s , -34d  2m 45.05s) |   C |    60 | 18.9 |        
    3838 | 2019-04-25 03:11:10 |         MASTER-SAAO | ( 21h 47m 56.90s , -42d  2m 48.09s) |   C |    60 | 19.0 |        
    3935 | 2019-04-25 03:12:48 |         MASTER-SAAO | ( 21h 37m 08.09s , -32d  2m 31.51s) |   C |    60 | 19.0 |        
    4050 | 2019-04-25 03:14:42 |         MASTER-SAAO | ( 21h 25m 53.84s , -41d 55m 38.46s) |   C |    60 | 18.9 |        
    4165 | 2019-04-25 03:16:37 |         MASTER-SAAO | ( 21h 37m 11.07s , -42d  2m 45.23s) |   C |    60 | 19.0 |        
    4263 | 2019-04-25 03:18:16 |         MASTER-SAAO | ( 21h 47m 33.01s , -34d  2m 52.19s) |   C |    60 | 19.0 |        
    4358 | 2019-04-25 03:19:51 |         MASTER-SAAO | ( 21h 57m 13.48s , -34d  2m 59.19s) |   C |    60 | 19.0 |        
    4456 | 2019-04-25 03:21:28 |         MASTER-SAAO | ( 21h 47m 58.68s , -42d  2m 53.57s) |   C |    60 | 19.1 |        
    4555 | 2019-04-25 03:23:07 |         MASTER-SAAO | ( 21h 58m 43.58s , -42d  3m 04.01s) |   C |    60 | 19.0 |        
    4669 | 2019-04-25 03:25:02 |         MASTER-SAAO | ( 21h 36m 39.16s , -31d 55m 37.72s) |   C |    60 | 18.9 |        
    4785 | 2019-04-25 03:26:58 |         MASTER-SAAO | ( 21h 46m 34.54s , -32d  2m 40.32s) |   C |    60 | 19.0 |        
    4901 | 2019-04-25 03:28:54 |         MASTER-SAAO | ( 21h 36m 41.36s , -41d 55m 44.67s) |   C |    60 | 19.0 |        
    5018 | 2019-04-25 03:30:50 |         MASTER-SAAO | ( 21h 57m 12.77s , -34d  2m 33.52s) |   C |    60 | 19.0 |        
    5115 | 2019-04-25 03:32:28 |         MASTER-SAAO | ( 21h 58m 44.32s , -42d  3m 22.84s) |   C |    60 | 19.0 |        
    5232 | 2019-04-25 03:34:24 |         MASTER-SAAO | ( 21h 46m 06.75s , -31d 55m 39.55s) |   C |    60 | 19.0 |        
    5347 | 2019-04-25 03:36:20 |         MASTER-SAAO | ( 22h  0m 08.98s , -36d  2m 44.21s) |   C |    60 | 18.9 |        
    5462 | 2019-04-25 03:38:15 |         MASTER-SAAO | ( 21h 24m 00.12s , -43d 56m 04.97s) |   C |    60 | 18.9 |        
    5558 | 2019-04-25 03:39:51 |         MASTER-SAAO | ( 21h 46m 13.83s , -43d 55m 56.70s) |   C |    60 | 18.9 |        
    5772 | 2019-04-25 03:43:24 |         MASTER-SAAO | ( 22h 10m 04.28s , -36d  3m 14.00s) |   C |    60 | 19.0 |        
    5981 | 2019-04-25 03:46:53 |         MASTER-SAAO | ( 21h 35m 07.12s , -43d 55m 54.68s) |   C |    60 | 18.9 |        
Filter C is a clear (unfiltred) band. 


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

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