GCN Circular 23322
Subject
GRB 181008B: Global MASTER Net optical inspection
Date
2018-10-11T07:59:47Z (6 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov,
N.Tyurina, P.Balanutsa,A.Kuznetsov, V.V.Chazov, D. Vlasenko
Lomonosov Moscow State University, Sternberg Astronomical Institute
D.Svinkin (Ioffe Institute, Russia)
R. Podesta, F. Podesta, C. Lopez, C.Francile
Observatorio Astronomico Felix Aguilar (OAFA)
Hugo Levato Instituto de Ciencias Astronomicas, de la Tierra y del Espacio
(ICATE)
R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres
The Instituto de Astrofisica de Canarias
D. Buckley,
South African Astronomical Observatory
A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov
Kislovodsk Solar Station of the Pulkovo Observatory
O. Gres, N.M. Budnev, Yu.Ishmuhametova
Applied Physics Institute of Irkutsk State University
V. Yurkov, A. Gabovich, Yu. Sergienko
Blagoveschensk Educational State University, Blagoveschensk
MASTER-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
South Africa (South African Astronomical Observatory) was starting survey
on the IPN GRB181008.88 error-box (Svinkin et al., GCN 23318)
26827 sec after notice time and 1 days 8072 sec after trigger time at
2018-10-09 23:19:04 UT. The 5-sigma upper limit on our first (180s
exposure) set is about 19.0 mag
Link to GRB181008.88 page:
https://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval
The message may be cited.
The galactic latitude b = -60 deg., longitude l = 98 deg.
The observations made on zenit distance = 42 deg.The moon ( 1 % bright
part) below the horizon (The altitude of the Moon is -52 deg. ).
The sun altitude is -49.0 deg.
The object can be observed till 2018-10-10 03:24:40
MASTER-Kislovodsk robotic telescope (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 starting survey on the IPN GRB181008.88
error-box 28923 sec after notice time
and 1 days 10168 sec after trigger time at 2018-10-09 23:54:00 UT. The
5-sigma upper limit on our first (180s exposure) set is about 17.4 mag
Link to GRB181008.88 page:
https://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval
The message may be cited.
The observations made on zenit distance = 69 deg.The moon ( 1 % bright
part) below the horizon (The altitude of the Moon is -43 deg. ).
The sun altitude is -36.1 deg.
The object can be observed till 2018-10-10 01:57:56
MASTER-Tavrida robotic telescope (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) was starting
survey on the IPN GRB181008.88 error-box 32631 sec after notice time and 1 days 13876 sec after trigger
time at 2018-10-10 00:55:48 UT. The 5-sigma upper limit on our first (180s
exposure) set is about 17.9 mag
The galactic latitude b = -60 deg., longitude l = 98 deg.
The observations made on zenit distance = 74 deg.The moon ( 1 % bright
part) below the horizon (The altitude of the Moon is -39 deg. ).
The sun altitude is -31.3 deg.
The object can be observed till 2018-10-10 02:32:31
MASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru,
Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in
Argentina (OAFA observatory of San Juan National University) was starting
survey on the IPN GRB181008.88 error-box 1 days 33629 sec after trigger time at 2018-10-10 03:35:27 UT.
The 5-sigma upper limit on our 3-th (180s exposure) set is about 17.6 mag
Link to GRB181008.88 page:
https://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval
The message may be cited.
The galactic latitude b = -60 deg., longitude l = 98 deg.
The observations made on zenit distance = 32 deg.The moon ( 1 % bright
part) below the horizon (The altitude of the Moon is -44 deg. ).
The sun altitude is -50.0 deg.
The object can be observed till 2018-10-10 09:24:14
The total MASTER cover map is available at
http://master.sai.msu.ru/static//IPN/db/GRB181008.88/img/ligo_master_2018-10-10-08-31-15.eb.zoom.1.png
MASTER OT J075512.66-414512.0 detection - long variable star
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic
Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 07h 55m 12.66s -41d 45m 12.0s on
2018-10-09.99672 UT.
The OT unfiltered magnitude is 12.2m (mlim=19.0).
The OT is seen in 4 images.
This OT was observed at MASTER-OAFA on 2017-09-23 08:08:47 with unfiltered
m_OT=12.4.
We have reference image on on 2015-01-11 21:25:04.129 UT with unfiltered
m_OT=14.9m (MASTER-SAAO).
The discovery and reference images are available at
http://master.sai.msu.ru/static/OT/075512.66-414512.0.png
This message can be cited.