GCN Circular 24241

V. Lipunov, E. Gorbovskoy, N.Tyurina, V.Kornilov, D.Vlasenko, V.Vladimirov, 
D.Zimnukhov,
A.Kuznetsov, P.Balanutsa, A. Chasovnikov, V.Topolev, D.Kuvshinov, F.Balakin 
(Lomonosov Moscow State University, SAI, Physics Department),

V.B. Petkov, M.M. Boliev, A.N. Kurenya,
Baksan Neutrino Observatory, Institute for Nuclear Research of RAS,
Moscow, Russia

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

D. Buckley (South African Astronomical Observatory),

O. Gress, N.M. Budnev, O.Ershova (Applied Physics Institute, Irkutsk State 
University),

V. Yurkov, A. Gabovich, Yu. Sergienko, D. Kobcev (Blagoveschensk Educational 
State University),


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

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)

MASTER Global Robotic Net (http://observ.pereplet.ru, Lipunov et al., 
2010,Advances in Astronomy,vol. 2010, 30L)
started  LIGO/Virgo S190425z (Singer et al. GCN 24168
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)
inspection at 2019-04-25 09:10:18 UT (Lipunov et al. GCN 24167
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) at 
MASTER-OAFA (Argentina).

MASTER-OAFA started PS19qp (Smith et al., GCN 24210
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 ) at  2019-04-26 
01:56:40.

         Looking at our old images AT2019ebq
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 / PS19qp, we 
found a very recent inspection of this field due to the neutrino BNO alert 
3 weeks ago and automatical Circular (not published yet).

To establish a possible connection of this supernova with neutrinos, it is 
extremely important to determine the age of the supernova AT2019ebq
Not found
 
 
 / 
PS19qp . Thus the object is not associated with LIGO/Virgo S190425z but 
may be connected with BNO Alert190405.62 .

Below you can find automatic Circular (not published yet):

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  BAKSAN Alert190405.62 
( 17h 25m 36.00s , - 2d 36m 00.00s, R=3) 19864 sec after trigger time at 
2019-04-05 20:29:29 UT, with upper limit up to  19.2 mag. The observations 
began at zenit distance = 83 deg. The sun  altitude  is -39.9 deg.

MASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI 
Crimea astronomical station) was pointed to the  BAKSAN Alert190405.62 
28940 sec after trigger time at 2019-04-05 23:00:45 UT, with upper limit 
up to  19.1 mag. The observations began at zenit distance = 63 deg. The 
sun  altitude  is -37.1 deg.

MASTER-SAAO robotic telescope  located in South Africa (South African 
Astronomical Observatory) was pointed to the  BAKSAN Alert190405.62 1 days 
39324 sec after trigger time at 2019-04-07 01:53:49 UT, with upper limit 
up to  19.2 mag. The observations began at zenit distance = 34 deg. The 
sun  altitude  is -38.5 deg.

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of 
San Juan National University) was pointed to the  BAKSAN Alert190405.62 1 
days 54872 sec after trigger time at 2019-04-07 06:12:57 UT, with upper 
limit up to  18.0 mag. The observations began at zenit distance = 49 deg. 
The sun  altitude  is -56.9 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=991224

The follow up spectral and photometric observations of AT2019ebq
Not found
 
 
/PS19qp 
are required.


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