GCN Circular 24341
Subject
LIGO/Virgo S190426c: MASTER analysys of GRAWITA transients
Date
2019-04-29T11:47:01Z (5 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, N.Tyurina, E. Gorbovskoy, V.Kornilov, D.Vlasenko, V.Vladimirov, D.Zimnukhov, A.Kuznetsov,
P.Balanutsa, I.Gorbunov, A. Chasovnikov, V.Grinshpun, F.Balakin, T.Pogrosheva (Lomonosov Moscow State University, SAI, Physics Department),
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias),
R. Podesta, C. Lopez, C.Francile, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA, San Juan National University),
H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE,SJNU)
D. Buckley (South African Astronomical Observatory),
O. Gress, N.M. Budnev, O.Ershova (Applied Physics Institute, Irkutsk Stat University),
V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk EducationState University),
A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
MASTER Global Robotic Net (http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)
started inspect of GW190426 / LIGO/Virgo S190426c errorbox (Chatterjee et al. GCN 24237 https://gcn.gsfc.nasa.gov/other/S190426c.gcn3 )
at 2019-04-26 16:15:47 UT (Lipunov et al. GCN 24236) and continuied several nights.
There is no OTs at GRAWITA positions ( Izzo et al. GCN 24340 ) several hours befor
1) 21 57 16.26 +83 22 39.4
Date_UT unfiltmlim MASTER_observatory
2019-04-26 20:38:02 19.6 MASTER-Kislovodsk
2019-04-26 18:38:53 19.6 MASTER-Tavrida
2019-04-26 16:41:15 19.2 MASTER-Tunka
There is variable star in 5", presented in GSC2.3.2 (red fmag=19.9 in 1996), PanSTARR source with rmag=20.73(2010Dec30). It's not presented in
USNO-B1, it means 22mPOSS limit in history.
2) 22:01:04.54 +83:48:36.9
Date_UT unfiltmlim MASTER_observatory
2019-04-26 20:38:02 19.6 MASTER-Kislovodsk
2019-04-26 18:38:53 19.6 MASTER-Tavrida
2019-04-26 16:25:18 19.6 MASTER-Tunka
2019-04-27 11:59:22 16.5 MASTER-Amur
there is also a star in 6.9" in PanSTARR catalogue with imag=21.14 (no g,r)
3) 22 00 50.38 +84 44 36.5
Date_UT unfiltmlim MASTER_observatory
2019-04-26 20:56:51 20.0 MASTER-Tavrida
2019-04-26 20:38:02 19.7 MASTER-Kislovodsk
2019-04-26 16:25:18 19.5 MASTER-Tunka
There is a star in 4.3" in USNO-B1 (B1=20.77,R1=19.08) with proper motion .
The message may be cited.