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GCN Circular 25804

Subject
IceCube Alert 190922.96: Global MASTER-Net observations report
Date
2019-09-22T23:14:27Z (5 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 
(Lomonosov Moscow State University, SAI, Physics Department),

R. Podesta, C.Lopez, F. Podesta, C.Francile 
(Observatorio Astronomico Felix Aguilar OAFA),

H.Levato 
(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),

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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the IceCube Alert 190922.96 (trigger No 52499868,00h 24m 01.200s , -01d 29m 16.80s, R=0.63) errorbox  50 sec after trigger time at 2019-09-22 23:04:45 UT, with upper limit up to  19.2 mag. The observations began at zenit distance = 49 deg. The sun  altitude  is -38.9 deg. 

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the IceCube Alert 190922.96 errorbox  54 sec after trigger time at 2019-09-22 23:04:49 UT, with upper limit up to  19.1 mag. The observations began at zenit distance = 48 deg. The sun  altitude  is -41.5 deg. 

MASTER-SAAO robotic telescope  located in South Africa (South African Astronomical Observatory) was pointed to the IceCube Alert 190922.96 errorbox  55 sec after trigger time at 2019-09-22 23:04:50 UT, with upper limit up to  19.3 mag. The observations began at zenit distance = 31 deg. The sun  altitude  is -57.3 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the IceCube Alert 190922.96 errorbox  60 sec after trigger time at 2019-09-22 23:04:55 UT, with upper limit up to  18.5 mag. The observations began at zenit distance = 44 deg. The sun  altitude  is -51.2 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=1145488

We obtain a following upper limits.  

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

     141 | 2019-09-22 23:04:45 |   MASTER-Kislovodsk | (00h 24m 12.720s , -01d 24m 33.27s) |   C |   180 | 19.0 |        
     141 | 2019-09-22 23:04:45 |   MASTER-Kislovodsk | (00h 24m 12.799s , -00d 57m 19.64s) |   C |   180 | 19.2 |        
     144 | 2019-09-22 23:04:49 |      MASTER-Tavrida | (00h 21m 45.753s , -01d 35m 06.61s) |   C |   180 | 19.1 |        
     144 | 2019-09-22 23:04:49 |      MASTER-Tavrida | (00h 22m 42.080s , -01d 31m 16.95s) |   R |   180 | 17.0 |        
     145 | 2019-09-22 23:04:50 |         MASTER-SAAO | (00h 23m 41.910s , -01d 29m 32.62s) |   C |   180 | 19.3 |        
      65 | 2019-09-22 23:04:55 |          MASTER-IAC | (00h 22m 24.969s , -01d 31m 12.07s) |  P- |    10 | 16.6 |        
      65 | 2019-09-22 23:04:55 |          MASTER-IAC | (00h 23m 02.005s , -01d 34m 38.77s) |  P| |    10 | 16.9 |        
     102 | 2019-09-22 23:05:26 |          MASTER-IAC | (00h 23m 02.132s , -01d 34m 38.64s) |  P| |    20 | 17.8 |        
     102 | 2019-09-22 23:05:26 |          MASTER-IAC | (00h 22m 25.051s , -01d 31m 13.10s) |  P- |    20 | 17.3 |        
     147 | 2019-09-22 23:06:07 |          MASTER-IAC | (00h 23m 02.241s , -01d 34m 39.01s) |  P| |    30 | 18.1 |        
     147 | 2019-09-22 23:06:07 |          MASTER-IAC | (00h 22m 25.129s , -01d 31m 14.19s) |  P- |    30 | 17.7 |        
     203 | 2019-09-22 23:06:58 |          MASTER-IAC | (00h 22m 25.220s , -01d 31m 14.95s) |  P- |    40 | 17.8 |        
     204 | 2019-09-22 23:06:58 |          MASTER-IAC | (00h 23m 02.333s , -01d 34m 39.34s) |  P| |    40 | 18.3 |        
     268 | 2019-09-22 23:07:58 |          MASTER-IAC | (00h 23m 02.415s , -01d 34m 39.74s) |  P| |    50 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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