TITLE: GCN CIRCULAR NUMBER: 24607 SUBJECT: LIGO/Virgo S190519bj Global MASTER-Net observations report DATE: 19/05/19 22:24:13 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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, Moscow State University) A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory) K. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk (Irkutsk State University) V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University, Blagoveschensk) R. Podesta, Carlos Lopez and F. Podesta (Observatorio Astronomico Felix Aguilar (OAFA)) Hugo Levato and Carlos Saffe (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, S. Potter, A. Kniazev, M. Kotze (South African Astronomical Observatory) 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 S190519bj errorbox 8823 sec after trigger time at 2019-05-19 18:02:47 UT, with upper limit up to 18.8 mag. The observations began at zenit distance = 146 deg. The sun altitude is -28.4 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the LIGO/Virgo S190519bj errorbox 9382 sec after trigger time at 2019-05-19 18:12:06 UT, with upper limit up to 17.4 mag. Observations started at twilight. The observations began at zenit distance = 136 deg. The sun altitude is -10.6 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S190519bj errorbox 17957 sec after trigger time at 2019-05-19 20:35:01 UT, with upper limit up to 16.5 mag. The observations began at zenit distance = 119 deg. The sun altitude is -26.8 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/ligo_1.php?id=10404 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 8913 | 2019-05-19 18:02:47 | MASTER-SAAO | ( 12h 17m 25.50s , -21d 44m 22.80s) | C | 180 | 18.0 | 9472 | 2019-05-19 18:12:06 | MASTER-Tavrida | ( 0h 33m 00.96s , +55d 58m 47.18s) | C | 180 | 13.7 | 9708 | 2019-05-19 18:16:01 | MASTER-SAAO | ( 12h 17m 27.15s , -21d 44m 33.27s) | C | 180 | 18.1 | 9710 | 2019-05-19 18:16:04 | MASTER-Tavrida | ( 0h 33m 35.51s , +55d 37m 44.92s) | C | 180 | 14.1 | 9947 | 2019-05-19 18:20:01 | MASTER-Tavrida | ( 23h 53m 25.12s , +56d 1m 04.88s) | C | 180 | 12.3 | 9949 | 2019-05-19 18:20:03 | MASTER-SAAO | ( 12h 26m 03.31s , -21d 44m 32.02s) | C | 180 | 18.2 | 10174 | 2019-05-19 18:23:47 | MASTER-SAAO | ( 12h 26m 03.47s , -21d 44m 55.35s) | C | 180 | 18.0 | 10411 | 2019-05-19 18:27:44 | MASTER-SAAO | ( 12h 34m 41.98s , -21d 44m 33.85s) | C | 180 | 17.8 | 10422 | 2019-05-19 18:27:55 | MASTER-Tavrida | ( 0h 24m 55.69s , +59d 56m 15.11s) | C | 180 | 15.9 | 10422 | 2019-05-19 18:27:55 | MASTER-Tavrida | ( 0h 37m 19.98s , +59d 53m 23.31s) | C | 180 | 15.4 | 10660 | 2019-05-19 18:31:54 | MASTER-Tavrida | ( 0h 25m 12.80s , +59d 43m 54.13s) | C | 180 | 15.8 | 10665 | 2019-05-19 18:31:59 | MASTER-SAAO | ( 12h 26m 03.78s , -21d 44m 42.72s) | C | 180 | 18.1 | 10927 | 2019-05-19 18:36:21 | MASTER-SAAO | ( 12h 26m 03.96s , -21d 45m 07.00s) | C | 180 | 17.9 | 11134 | 2019-05-19 18:39:47 | MASTER-Tavrida | ( 0h 25m 11.44s , +59d 43m 35.13s) | C | 180 | 15.8 | 11192 | 2019-05-19 18:40:45 | MASTER-SAAO | ( 12h 34m 42.17s , -21d 45m 05.76s) | C | 180 | 17.5 | 11371 | 2019-05-19 18:43:44 | MASTER-Tavrida | ( 23h 53m 15.48s , +57d 57m 23.33s) | C | 180 | 12.5 | 11371 | 2019-05-19 18:43:44 | MASTER-Tavrida | ( 0h 4m 59.51s , +57d 55m 17.17s) | C | 180 | 12.8 | 11608 | 2019-05-19 18:47:42 | MASTER-Tavrida | ( 0h 5m 24.49s , +57d 37m 26.05s) | C | 180 | 12.7 | 11608 | 2019-05-19 18:47:42 | MASTER-Tavrida | ( 23h 53m 40.99s , +57d 43m 55.74s) | C | 180 | 12.6 | 12082 | 2019-05-19 18:55:36 | MASTER-Tavrida | ( 0h 5m 23.76s , +57d 37m 03.52s) | C | 180 | 12.3 | 12082 | 2019-05-19 18:55:36 | MASTER-Tavrida | ( 23h 53m 39.76s , +57d 43m 35.66s) | C | 180 | 13.1 | 12320 | 2019-05-19 18:59:34 | MASTER-Tavrida | ( 23h 53m 16.49s , +57d 57m 10.06s) | C | 180 | 12.9 | 12321 | 2019-05-19 18:59:34 | MASTER-Tavrida | ( 0h 5m 01.04s , +57d 54m 56.60s) | C | 180 | 12.7 | 12800 | 2019-05-19 19:07:33 | MASTER-Tavrida | ( 23h 53m 02.52s , +59d 54m 59.97s) | C | 180 | 16.9 | 12800 | 2019-05-19 19:07:33 | MASTER-Tavrida | ( 0h 5m 28.59s , +59d 52m 44.68s) | C | 180 | 16.4 | 13039 | 2019-05-19 19:11:33 | MASTER-Tavrida | ( 0h 5m 44.78s , +59d 37m 04.93s) | C | 180 | 16.4 | 13039 | 2019-05-19 19:11:33 | MASTER-Tavrida | ( 23h 53m 17.71s , +59d 43m 31.30s) | C | 180 | 17.2 | 13519 | 2019-05-19 19:19:32 | MASTER-Tavrida | ( 0h 5m 46.78s , +59d 37m 27.98s) | C | 180 | 15.1 | 13519 | 2019-05-19 19:19:33 | MASTER-Tavrida | ( 23h 53m 19.03s , +59d 43m 52.77s) | C | 180 | 17.4 | 13758 | 2019-05-19 19:23:32 | MASTER-Tavrida | ( 23h 53m 03.08s , +59d 54m 49.86s) | C | 180 | 17.2 | 13758 | 2019-05-19 19:23:32 | MASTER-Tavrida | ( 0h 5m 29.76s , +59d 52m 30.33s) | C | 180 | 15.0 | 13995 | 2019-05-19 19:27:29 | MASTER-Tavrida | ( 23h 54m 16.84s , +53d 43m 35.75s) | C | 180 | 13.4 | 14229 | 2019-05-19 19:31:23 | MASTER-Tavrida | ( 23h 17m 27.53s , +51d 59m 52.67s) | C | 180 | 12.0 | 14463 | 2019-05-19 19:35:16 | MASTER-Tavrida | ( 0h 23m 47.65s , +57d 43m 55.97s) | C | 180 | 13.5 | 14571 | 2019-05-19 19:37:05 | MASTER-SAAO | ( 12h 43m 20.00s , -21d 45m 36.52s) | C | 180 | 18.4 | 14697 | 2019-05-19 19:39:11 | MASTER-Tavrida | ( 0h 23m 22.55s , +57d 57m 20.43s) | C | 180 | 14.4 | 14697 | 2019-05-19 19:39:11 | MASTER-Tavrida | ( 0h 35m 07.20s , +57d 55m 07.82s) | C | 180 | 13.7 | 14791 | 2019-05-19 19:40:44 | MASTER-SAAO | ( 12h 45m 59.50s , -23d 45m 59.09s) | C | 180 | 18.4 | 14937 | 2019-05-19 19:43:11 | MASTER-Tavrida | ( 23h 17m 59.96s , +51d 43m 37.96s) | C | 180 | 14.5 | 15009 | 2019-05-19 19:44:22 | MASTER-SAAO | ( 12h 23m 01.40s , -25d 46m 02.26s) | C | 180 | 18.4 | 15235 | 2019-05-19 19:48:09 | MASTER-SAAO | ( 12h 43m 20.89s , -21d 45m 51.96s) | C | 180 | 18.7 | 15453 | 2019-05-19 19:51:46 | MASTER-SAAO | ( 12h 45m 59.50s , -23d 46m 11.77s) | C | 180 | 18.3 | 15666 | 2019-05-19 19:55:19 | MASTER-SAAO | ( 12h 54m 45.88s , -23d 46m 09.23s) | C | 180 | 18.3 | 15883 | 2019-05-19 19:58:56 | MASTER-SAAO | ( 12h 23m 01.85s , -25d 46m 20.96s) | C | 180 | 18.5 | 16099 | 2019-05-19 20:02:33 | MASTER-SAAO | ( 12h 31m 53.93s , -25d 46m 15.85s) | C | 180 | 18.3 | 16325 | 2019-05-19 20:06:18 | MASTER-SAAO | ( 12h 54m 44.76s , -23d 46m 21.59s) | C | 180 | 18.4 | 16562 | 2019-05-19 20:10:16 | MASTER-SAAO | ( 13h 6m 13.80s , -33d 45m 51.77s) | C | 180 | 18.2 | 16742 | 2019-05-19 20:10:16 | MASTER-SAAO | ( 13h 6m 13.80s , -33d 45m 51.78s) | C | 540 | 18.8 | Coadd 16786 | 2019-05-19 20:13:59 | MASTER-SAAO | ( 13h 6m 12.54s , -33d 45m 56.95s) | C | 180 | 18.0 | 17050 | 2019-05-19 20:18:24 | MASTER-SAAO | ( 12h 31m 54.55s , -25d 46m 58.91s) | C | 180 | 17.9 | 17280 | 2019-05-19 20:22:14 | MASTER-SAAO | ( 13h 6m 14.23s , -33d 46m 40.08s) | C | 180 | 17.9 | 17543 | 2019-05-19 20:26:36 | MASTER-SAAO | ( 13h 6m 14.46s , -33d 46m 26.60s) | C | 180 | 17.6 | 17768 | 2019-05-19 20:30:21 | MASTER-SAAO | ( 13h 15m 50.91s , -33d 46m 25.90s) | C | 180 | 17.6 | 17984 | 2019-05-19 20:33:58 | MASTER-SAAO | ( 13h 5m 56.01s , -35d 46m 59.51s) | C | 180 | 17.6 | 18047 | 2019-05-19 20:35:01 | MASTER-Kislovodsk | ( 23h 48m 12.35s , +48d 0m 27.92s) | C | 180 | 15.6 | 18047 | 2019-05-19 20:35:01 | MASTER-Kislovodsk | ( 0h 0m 10.60s , +47d 31m 59.93s) | C | 180 | 15.9 | 18206 | 2019-05-19 20:37:39 | MASTER-SAAO | ( 13h 5m 56.16s , -35d 46m 46.28s) | C | 180 | 17.3 | 18260 | 2019-05-19 20:38:33 | MASTER-Kislovodsk | ( 22h 39m 05.64s , +36d 3m 13.81s) | C | 180 | 16.5 | 18260 | 2019-05-19 20:38:33 | MASTER-Kislovodsk | ( 22h 48m 59.75s , +35d 34m 26.35s) | C | 180 | 16.2 | 18434 | 2019-05-19 20:41:28 | MASTER-SAAO | ( 13h 15m 51.32s , -33d 46m 45.13s) | C | 180 | 17.4 | 18658 | 2019-05-19 20:45:12 | MASTER-SAAO | ( 13h 5m 55.00s , -35d 47m 15.98s) | C | 180 | 17.1 | 18878 | 2019-05-19 20:48:52 | MASTER-SAAO | ( 13h 5m 56.59s , -35d 47m 20.57s) | C | 180 | 17.1 | 19099 | 2019-05-19 20:52:32 | MASTER-SAAO | ( 13h 15m 48.77s , -35d 46m 57.35s) | C | 180 | 17.8 | 19279 | 2019-05-19 20:52:32 | MASTER-SAAO | ( 13h 15m 48.78s , -35d 46m 57.40s) | C | 540 | 18.1 | Coadd 19319 | 2019-05-19 20:56:13 | MASTER-SAAO | ( 13h 25m 39.53s , -35d 47m 15.36s) | C | 180 | 17.9 | 19533 | 2019-05-19 20:59:47 | MASTER-SAAO | ( 13h 25m 31.36s , -33d 47m 00.80s) | C | 180 | 17.9 | 19750 | 2019-05-19 21:03:24 | MASTER-SAAO | ( 13h 15m 47.90s , -35d 47m 11.11s) | C | 180 | 17.5 | 19962 | 2019-05-19 21:06:55 | MASTER-SAAO | ( 13h 15m 48.03s , -35d 47m 36.71s) | C | 180 | 17.3 | 20179 | 2019-05-19 21:10:33 | MASTER-SAAO | ( 13h 25m 41.65s , -35d 47m 34.27s) | C | 180 | 17.0 | 20397 | 2019-05-19 21:14:10 | MASTER-SAAO | ( 13h 35m 33.86s , -35d 47m 12.23s) | C | 180 | 17.9 | 20577 | 2019-05-19 21:14:10 | MASTER-SAAO | ( 13h 35m 33.86s , -35d 47m 12.23s) | C | 540 | 17.6 | Coadd 20612 | 2019-05-19 21:17:46 | MASTER-SAAO | ( 13h 25m 30.97s , -33d 47m 24.55s) | C | 180 | 17.3 | 20835 | 2019-05-19 21:21:28 | MASTER-SAAO | ( 13h 35m 08.88s , -33d 47m 37.26s) | C | 180 | 16.9 | 21059 | 2019-05-19 21:25:12 | MASTER-SAAO | ( 13h 35m 34.37s , -35d 47m 47.89s) | C | 180 | 16.4 | 21289 | 2019-05-19 21:29:02 | MASTER-SAAO | ( 13h 35m 34.47s , -35d 47m 31.21s) | C | 180 | 15.8 | 21516 | 2019-05-19 21:32:50 | MASTER-SAAO | ( 13h 35m 09.26s , -33d 47m 31.91s) | C | 180 | 16.6 | 21783 | 2019-05-19 21:37:16 | MASTER-SAAO | ( 13h 7m 30.54s , -31d 48m 14.69s) | C | 180 | 16.5 | 21963 | 2019-05-19 21:37:16 | MASTER-SAAO | ( 13h 7m 30.54s , -31d 48m 14.77s) | C | 540 | 16.9 | Coadd 22034 | 2019-05-19 21:41:28 | MASTER-SAAO | ( 13h 7m 30.57s , -31d 48m 01.21s) | C | 180 | 16.4 | 22255 | 2019-05-19 21:45:09 | MASTER-SAAO | ( 12h 48m 38.76s , -31d 48m 47.81s) | C | 180 | 16.2 | 22483 | 2019-05-19 21:48:57 | MASTER-SAAO | ( 13h 7m 30.69s , -31d 48m 31.88s) | C | 180 | 16.1 | 22695 | 2019-05-19 21:52:28 | MASTER-SAAO | ( 13h 7m 30.75s , -31d 48m 17.21s) | C | 180 | 15.6 | 22798 | 2019-05-19 21:54:12 | MASTER-Kislovodsk | ( 23h 15m 14.23s , +44d 4m 01.10s) | C | 180 | 14.9 | 22798 | 2019-05-19 21:54:12 | MASTER-Kislovodsk | ( 23h 26m 28.09s , +43d 35m 29.03s) | C | 180 | 12.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.