GCN Circular 33995
Subject
LIGO/Virgo S230617ab: Global MASTER-Net observations report
Date
2023-06-18T07:05:59Z (10 months ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin
(Lomonosov Moscow State University, SAI, Physics Department),
R. Podesta, C.Lopez, F. Podesta, C.Francile
(Observatorio Astronomico Felix Aguilar OAFA),
R. Rebolo, M. Serra
(The Instituto de Astrofisica de Canarias),
D. Buckley
(South African Astronomical Observatory),
O.A. Gres, N.M. Budnev
(Irkutsk State University, API),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez
(INAOE, Guillermo Haro Astrophysics Observatory),
A. Tlatov, D. Dormidontov
(Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov
(Blagoveschensk Educational State University)
MASTER-OAFA robotic telescope (Global 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) started inspect of the LIGO/Virgo S230617ab errorbox 42792 sec after notice time and 42885 sec after trigger time at 2023-06-17 22:45:35 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -13.8 deg.
The galactic latitude b = 26 deg., longitude l = 73 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/ligo_1.php?id=12074
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
103 | 2023-06-17 10:52:23 | MASTER- | (18h 05m 49.44s , +45d 11m 01.8s) | C | 20 | 17.9 |
143 | 2023-06-17 10:53:03 | MASTER- | (18h 05m 46.44s , +45d 12m 38.1s) | C | 20 | 17.7 |
188 | 2023-06-17 10:53:43 | MASTER- | (18h 05m 46.90s , +45d 11m 05.5s) | C | 30 | 16.4 |
243 | 2023-06-17 10:54:32 | MASTER- | (18h 05m 49.69s , +45d 12m 07.4s) | C | 40 | 18.6 |
308 | 2023-06-17 10:55:32 | MASTER- | (18h 05m 44.00s , +45d 11m 24.5s) | C | 50 | 18.7 |
388 | 2023-06-17 10:56:42 | MASTER- | (18h 05m 43.98s , +45d 12m 16.4s) | C | 70 | 18.6 |
488 | 2023-06-17 10:58:13 | MASTER- | (18h 05m 49.76s , +45d 11m 09.7s) | C | 90 | 18.0 |
608 | 2023-06-17 11:00:02 | MASTER- | (18h 05m 43.17s , +45d 09m 54.8s) | C | 110 | 18.3 |
1339 | 2023-06-17 11:11:39 | MASTER- | (14h 37m 06.90s , +74d 41m 47.3s) | C | 180 | 17.4 |
1540 | 2023-06-17 11:14:59 | MASTER- | (15h 08m 10.68s , +74d 45m 01.2s) | C | 180 | 16.3 |
1740 | 2023-06-17 11:18:20 | MASTER- | (13h 38m 47.20s , +82d 15m 47.4s) | C | 180 | 15.7 |
1941 | 2023-06-17 11:21:41 | MASTER- | (14h 41m 26.44s , +82d 18m 27.7s) | C | 180 | 17.0 |
2142 | 2023-06-17 11:25:01 | MASTER- | (14h 37m 10.66s , +74d 42m 43.7s) | C | 180 | 14.8 |
42976 | 2023-06-17 22:45:35 | MASTER-OAFA | (09h 47m 30.89s , +27d 23m 52.5s) | C | 180 | 17.9 |
43609 | 2023-06-17 22:56:08 | MASTER-OAFA | (09h 48m 58.77s , +29d 16m 00.9s) | C | 180 | 18.5 |
43821 | 2023-06-17 22:59:40 | MASTER-OAFA | (09h 58m 18.13s , +29d 16m 46.7s) | C | 180 | 18.8 |
44410 | 2023-06-17 23:09:30 | MASTER-OAFA | (09h 48m 22.99s , +30d 20m 02.2s) | C | 180 | 18.3 |
44621 | 2023-06-17 23:13:01 | MASTER-OAFA | (09h 57m 36.61s , +30d 21m 20.4s) | C | 180 | 18.7 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.