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GCN Circular 26440

Subject
LIGO/Virgo S191215w: Global MASTER-Net observations report
Date
2019-12-15T22:58:54Z (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 
(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-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 LIGO/Virgo S191215w errorbox  145 sec after trigger time at 2019-12-15 22:33:17 UT, with upper limit up to  18.3 mag. The observations began at zenith distance = 35 deg. The sun  altitude  is -34.7 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the LIGO/Virgo S191215w errorbox  217 sec after trigger time at 2019-12-15 22:34:29 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 64 deg. The sun  altitude  is -57.4 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S191215w errorbox  535 sec after trigger time at 2019-12-15 22:39:47 UT, with upper limit up to  16.9 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -62.4 deg. 

The galactic latitude b = -23 deg., longitude l = 81 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/ligo_1.php?id=11055

We obtain a following upper limits.  

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

     236 | 2019-12-15 22:33:17 |         MASTER-SAAO | (06h 43m 57.53s , -01d 50m 41.4s) |   C |   180 | 18.3 |        
     307 | 2019-12-15 22:34:29 |          MASTER-IAC | (06h 46m 39.84s , -07d 56m 55.9s) |   C |   180 | 17.5 |        
     307 | 2019-12-15 22:34:29 |          MASTER-IAC | (06h 38m 28.61s , -07d 53m 21.7s) |   C |   180 | 17.4 |        
     454 | 2019-12-15 22:36:56 |         MASTER-SAAO | (06h 37m 52.59s , -05d 49m 28.9s) |   C |   180 | 18.1 |        
     572 | 2019-12-15 22:38:53 |          MASTER-IAC | (06h 46m 47.24s , -07d 58m 00.9s) |   C |   180 | 15.1 |        
     572 | 2019-12-15 22:38:53 |          MASTER-IAC | (06h 38m 35.78s , -07d 54m 24.1s) |   C |   180 | 14.5 |        
     591 | 2019-12-15 22:39:47 |   MASTER-Kislovodsk | (07h 09m 49.75s , -37d 13m 51.5s) |   C |   110 | 16.8 |        
     591 | 2019-12-15 22:39:47 |   MASTER-Kislovodsk | (07h 20m 00.97s , -37d 41m 14.4s) |   C |   110 | 16.6 |        
     619 | 2019-12-15 22:40:16 |         MASTER-SAAO | (07h 47m 32.27s , -43d 41m 11.5s) |   C |   110 | 18.2 |        
     699 | 2019-12-15 22:41:26 |          MASTER-IAC | (21h 57m 03.70s , +24d 59m 33.6s) |  P| |   130 | 17.5 |        
     699 | 2019-12-15 22:41:26 |          MASTER-IAC | (21h 56m 21.60s , +25d 03m 16.3s) |  P- |   130 | 17.0 |        
     731 | 2019-12-15 22:41:58 |   MASTER-Kislovodsk | (07h 09m 46.15s , -37d 13m 58.0s) |   C |   130 | 16.9 |        
     731 | 2019-12-15 22:41:58 |   MASTER-Kislovodsk | (07h 19m 57.20s , -37d 41m 21.8s) |   C |   130 | 16.9 |        
     765 | 2019-12-15 22:42:27 |         MASTER-SAAO | (07h 47m 35.71s , -43d 40m 37.5s) |   C |   140 | 18.3 |        
     904 | 2019-12-15 22:44:36 |          MASTER-IAC | (21h 56m 26.72s , +25d 02m 14.6s) |  P- |   160 | 17.2 |        
     904 | 2019-12-15 22:44:36 |          MASTER-IAC | (21h 57m 08.87s , +24d 58m 34.9s) |  P| |   160 | 17.8 |        
     942 | 2019-12-15 22:45:08 |         MASTER-SAAO | (07h 47m 30.18s , -43d 41m 19.5s) |   C |   170 | 18.2 |        
Filter C is a clear (unfiltred) band. 


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