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GCN Circular 26695

Subject
IceCube Alert 200109.99: Global MASTER-Net observations report
Date
2020-01-09T23:52:38Z (4 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),

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-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) started inspect of the IceCube Alert 200109.99 (trigger No 37927131,11h 01m 03.84s , +14d 55m 44.4s, R=1.94) errorbox  22 sec after notice time and 75 sec after trigger time at 2020-01-09 23:42:55 UT, with upper limit up to  16.1 mag. The observations began at zenith distance = 36 deg. The sun  altitude  is -58.1 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the IceCube Alert 200109.99 errorbox  53 sec after notice time and 105 sec after trigger time at 2020-01-09 23:43:25 UT, with upper limit up to  17.0 mag. The observations began at zenith distance = 71 deg. The sun  altitude  is -69.6 deg. 

The galactic latitude b = 62 deg., longitude l = 234 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1255748

We obtain a following upper limits.  

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

     165 | 2020-01-09 23:42:55 |      MASTER-Tavrida | (10h 56m 21.38s , +15d 06m 07.1s) |   R |   180 | 16.1 |        
     116 | 2020-01-09 23:43:25 |          MASTER-IAC | (10h 59m 44.66s , +14d 59m 44.6s) |  P- |    20 | 13.7 |        
     116 | 2020-01-09 23:43:25 |          MASTER-IAC | (10h 59m 05.97s , +15d 03m 29.4s) |  P| |    20 | 16.4 |        
     204 | 2020-01-09 23:44:48 |          MASTER-IAC | (10h 59m 41.41s , +15d 00m 39.1s) |  P- |    30 | 14.6 |        
     204 | 2020-01-09 23:44:48 |          MASTER-IAC | (10h 59m 02.65s , +15d 04m 23.9s) |  P| |    30 | 16.6 |        
     301 | 2020-01-09 23:46:15 |          MASTER-IAC | (10h 59m 08.75s , +15d 03m 20.4s) |  P| |    50 | 17.0 |        


The observation and reduction will continue. 
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