TITLE: GCN CIRCULAR NUMBER: 25666 SUBJECT: LIGO/Virgo S190901ap : No significant candidates in TAROT-GRANDMA DATE: 19/09/05 11:42:43 GMT FROM: Kateryna Barynova at Kiev Uni., GRANDMA K. Barynova (CEA-Irfu/Univ Kiev), W. Lin (THU), D. Corre (LAL), S. Antier (APC), M. Boer (Artemis), N. Christensen (Artemis), L. Eymar (Artemis), A. Klotz (IRAP), K. Noysen (Artemis, IRAP), S. Basa (LAM), J.G. Ducoin (LAL), M. Coughlin (Caltech), D. Coward (OzGrav-UWA), P. Hello (LAL), N. Leroy (LAL), D. Turpin (NAOC), C. Thone (HETH/IAA-CSIC), X. Wang (THU) Report on behalf of the TAROT network and GRANDMA collaborations. We performed tiled observations of the LIGO/Virgo event S190901ap event (GCN #25606) with the TAROT-Chile (TCH), TAROT-Calern (TCA) and TAROT-Reunion (TRE) telescopes operating in the visible located respectively at La Silla ESO observatory (LaS/ESO), the Calern site at the Cote d'Azur observatory and at La Reunion Island, France. The observation started for TRE at 09/01/19 23:57:14 UTC which corresponds approximately to 27 minutes after the GW trigger time, for TCA at 09/02/19 00:45:34 UTC which corresponds approximately to 75 minutes after the GW trigger time, and for TCH at 09/02/19 03:59:57 UTC which corresponds approximately to 269 minutes after the GW trigger time. We performed the following tiled observations : +-------+------------+------------+---------+---------+---------+ | Tele | TStart | TEnd | RA | DEC | Proba | | scope | [UTC] | [UTC] | [deg] | [deg] | [%] | |-------+------------+------------+---------+---------+---------| | TRE | 2019-09-01 | 2019-09-02 | 56.1 | -22.445 | 0.5 | | | 23:57:14 | 19:55:53 | | | | | TRE | 2019-09-02 | 2019-09-02 | 63.563 | -18.355 | 0.5 | | | 00:10:23 | 21:08:16 | | | | | TRE | 2019-09-02 | 2019-09-02 | 59.173 | -18.355 | 0.5 | | | 21:40:00 | 21:46:28 | | | | | TRE | 2019-09-02 | 2019-09-04 | 48.853 | -26.536 | 0.5 | | | 21:52:55 | 01:39:05 | | | | | TRE | 2019-09-02 | 2019-09-03 | 60.705 | -10.173 | 0.5 | | | 22:11:52 | 21:42:47 | | | | | TRE | 2019-09-02 | 2019-09-03 | 62.1 | -14.264 | 0.4 | | | 22:24:38 | 00:38:54 | | | | | TRE | 2019-09-02 | 2019-09-04 | 67.954 | -18.355 | 0.5 | | | 22:56:19 | 00:35:23 | | | | | TRE | 2019-09-02 | 2019-09-02 | 57.814 | -14.264 | 0.5 | | | 23:21:47 | 23:28:20 | | | | | TRE | 2019-09-02 | 2019-09-03 | 65.1 | -22.445 | 0.5 | | | 23:35:00 | 20:58:07 | | | | | TRE | 2019-09-03 | 2019-09-03 | 50.749 | -30.627 | 0.4 | | | 00:51:12 | 22:14:50 | | | | | TRE | 2019-09-03 | 2019-09-03 | 44.178 | -26.536 | 0.4 | | | 19:21:53 | 19:28:21 | | | | | TRE | 2019-09-03 | 2019-09-03 | 55.614 | -30.627 | 0.4 | | | 21:55:02 | 22:01:30 | | | | | TRE | 2019-09-03 | 2019-09-03 | 70.671 | -14.264 | 0.5 | | | 22:39:59 | 22:46:27 | | | | | TRE | 2019-09-03 | 2019-09-03 | 51.6 | -22.445 | 0.5 | | | 22:53:01 | 22:59:35 | | | | | TRE | 2019-09-03 | 2019-09-03 | 66.386 | -14.264 | 0.5 | | | 23:05:36 | 23:12:04 | | | | | TRE | 2019-09-03 | 2019-09-03 | 60.6 | -22.445 | 0.5 | | | 23:18:31 | 23:24:59 | | | | |-------+------------+------------+---------+---------+---------| | TCA | 2019-09-02 | 2019-09-04 | 59.998 | -12.967 | 0.1 | | | 00:45:34 | 01:00:07 | | | | | TCA | 2019-09-02 | 2019-09-04 | 61.264 | -11.112 | 0.1 | | | 00:52:23 | 01:51:39 | | | | | TCA | 2019-09-02 | 2019-09-02 | 57.214 | -18.535 | 0.1 | | | 00:59:12 | 01:05:42 | | | | | TCA | 2019-09-02 | 2019-09-02 | 66.919 | -11.112 | 0.1 | | | 01:11:30 | 03:28:20 | | | | | TCA | 2019-09-02 | 2019-09-04 | 60.629 | -14.823 | 0.1 | | | 01:18:19 | 02:39:22 | | | | | TCA | 2019-09-02 | 2019-09-03 | 63.75 | -9.256 | 0.1 | | | 01:25:08 | 02:45:10 | | | | | TCA | 2019-09-02 | 2019-09-03 | 58.093 | -12.967 | 0.1 | | | 01:37:24 | 03:36:21 | | | | | TCA | 2019-09-02 | 2019-09-02 | 69.375 | -9.256 | 0.1 | | | 01:44:14 | 04:00:59 | | | | | TCA | 2019-09-02 | 2019-09-04 | 60.95 | -9.256 | 0.1 | | | 01:53:18 | 01:39:22 | | | | | TCA | 2019-09-02 | 2019-09-04 | 52.663 | -20.39 | 0.1 | | | 02:16:56 | 02:05:19 | | | | | TCA | 2019-09-02 | 2019-09-02 | 61.902 | -12.967 | 0.1 | | | 02:23:45 | 02:30:15 | | | | | TCA | 2019-09-02 | 2019-09-02 | 64.084 | -11.112 | 0.1 | | | 02:35:44 | 02:42:14 | | | | | TCA | 2019-09-02 | 2019-09-02 | 59.646 | -18.535 | 0.1 | | | 02:42:33 | 02:49:03 | | | | | TCA | 2019-09-02 | 2019-09-02 | 61.602 | -18.535 | 0.1 | | | 02:49:22 | 02:55:53 | | | | | TCA | 2019-09-02 | 2019-09-02 | 72.2 | -9.256 | 0.1 | | | 03:15:01 | 03:17:01 | | | | | TCA | 2019-09-02 | 2019-09-02 | 66.575 | -9.256 | 0.1 | | | 03:40:50 | 03:47:21 | | | | | TCA | 2019-09-03 | 2019-09-03 | 55.713 | -12.967 | 0.1 | | | 00:21:30 | 02:38:21 | | | | | TCA | 2019-09-03 | 2019-09-03 | 63.807 | -12.967 | 0.1 | | | 00:54:03 | 01:00:33 | | | | | TCA | 2019-09-03 | 2019-09-04 | 50.674 | -20.39 | 0.1 | | | 01:00:52 | 00:53:16 | | | | | TCA | 2019-09-03 | 2019-09-03 | 69.521 | -12.967 | 0.1 | | | 01:26:26 | 03:43:11 | | | | | TCA | 2019-09-03 | 2019-09-04 | 57.079 | -16.679 | 0.1 | | | 01:33:16 | 01:25:40 | | | | | TCA | 2019-09-03 | 2019-09-04 | 54.652 | -20.39 | 0.1 | | | 01:40:05 | 01:32:31 | | | | | TCA | 2019-09-03 | 2019-09-03 | 67.617 | -12.967 | 0.1 | | | 01:52:16 | 04:08:27 | | | | | TCA | 2019-09-03 | 2019-09-04 | 56.779 | -14.823 | 0.1 | | | 02:05:54 | 01:58:29 | | | | | TCA | 2019-09-03 | 2019-09-03 | 55.789 | -18.535 | 0.1 | | | 02:18:13 | 02:24:43 | | | | | TCA | 2019-09-03 | 2019-09-03 | 57.495 | -11.112 | 0.1 | | | 02:25:02 | 02:31:32 | | | | | TCA | 2019-09-03 | 2019-09-03 | 70.213 | -11.112 | 0.1 | | | 03:23:02 | 03:29:32 | | | | | TCA | 2019-09-04 | 2019-09-04 | 53.208 | -16.679 | 0.1 | | | 02:30:32 | 02:37:03 | | | | |-------+------------+------------+---------+---------+---------| | TCH | 2019-09-02 | 2019-09-04 | 57.079 | -19.959 | 0.1 | | | 03:59:57 | 07:02:59 | | | | | TCH | 2019-09-02 | 2019-09-02 | 55.363 | -25.414 | 0.1 | | | 04:06:45 | 08:46:05 | | | | | TCH | 2019-09-02 | 2019-09-02 | 61.285 | -25.414 | 0.1 | | | 04:13:33 | 04:20:03 | | | | | TCH | 2019-09-02 | 2019-09-02 | 51.238 | -25.495 | 0.1 | | | 04:20:21 | 06:35:40 | | | | | TCH | 2019-09-02 | 2019-09-04 | 68.686 | -16.323 | 0.1 | | | 04:51:50 | 09:38:48 | | | | | TCH | 2019-09-02 | 2019-09-02 | 43.554 | -30.868 | 0.1 | | | 04:58:39 | 09:58:11 | | | | | TCH | 2019-09-02 | 2019-09-02 | 54.652 | -23.595 | 0.1 | | | 05:05:27 | 07:34:48 | | | | | TCH | 2019-09-02 | 2019-09-02 | 62.35 | -14.505 | 0.1 | | | 05:24:17 | 05:30:47 | | | | | TCH | 2019-09-02 | 2019-09-02 | 59.998 | -18.141 | 0.1 | | | 05:31:05 | 08:00:06 | | | | | TCH | 2019-09-02 | 2019-09-02 | 57.214 | -21.777 | 0.1 | | | 05:37:53 | 05:44:23 | | | | | TCH | 2019-09-02 | 2019-09-02 | 60.95 | -19.959 | 0.1 | | | 05:56:40 | 06:03:10 | | | | | TCH | 2019-09-02 | 2019-09-02 | 58.093 | -18.141 | 0.1 | | | 06:03:28 | 06:09:58 | | | | | TCH | 2019-09-02 | 2019-09-02 | 53.352 | -25.414 | 0.1 | | | 06:35:58 | 06:42:28 | | | | | TCH | 2019-09-02 | 2019-09-02 | 56.641 | -23.595 | 0.1 | | | 06:42:46 | 06:49:16 | | | | | TCH | 2019-09-02 | 2019-09-02 | 59.014 | -19.959 | 0.1 | | | 09:38:11 | 09:44:41 | | | | | TCH | 2019-09-02 | 2019-09-02 | 45.684 | -30.868 | 0.1 | | | 10:10:53 | 10:15:08 | | | | | TCH | 2019-09-03 | 2019-09-04 | 65.572 | -21.777 | 0.1 | | | 04:34:32 | 08:46:48 | | | | | TCH | 2019-09-03 | 2019-09-03 | 55.691 | -23.595 | 0.1 | | | 05:06:45 | 09:32:17 | | | | | TCH | 2019-09-03 | 2019-09-04 | 53.742 | -32.686 | 0.1 | | | 05:13:33 | 09:25:11 | | | | | TCH | 2019-09-03 | 2019-09-03 | 55.422 | -16.323 | 0.1 | | | 05:32:44 | 07:49:08 | | | | | TCH | 2019-09-03 | 2019-09-04 | 57.787 | -16.323 | 0.1 | | | 05:39:32 | 07:41:53 | | | | | TCH | 2019-09-03 | 2019-09-04 | 67.617 | -18.141 | 0.1 | | | 05:51:49 | 10:04:18 | | | | | TCH | 2019-09-03 | 2019-09-04 | 57.2 | -14.505 | 0.1 | | | 05:58:37 | 10:11:06 | | | | | TCH | 2019-09-03 | 2019-09-03 | 60.632 | -16.323 | 0.1 | | | 06:05:25 | 08:20:57 | | | | | TCH | 2019-09-03 | 2019-09-04 | 64.821 | -19.959 | 0.1 | | | 06:24:24 | 06:17:37 | | | | | TCH | 2019-09-03 | 2019-09-04 | 52.826 | -21.777 | 0.1 | | | 06:31:13 | 08:33:12 | | | | | TCH | 2019-09-03 | 2019-09-04 | 55.144 | -20.909 | 0.1 | | | 06:38:01 | 08:40:00 | | | | | TCH | 2019-09-03 | 2019-09-04 | 53.208 | -19.959 | 0.1 | | | 06:56:39 | 04:39:47 | | | | | TCH | 2019-09-03 | 2019-09-04 | 52.108 | -17.273 | 0.1 | | | 07:03:27 | 06:56:11 | | | | | TCH | 2019-09-03 | 2019-09-04 | 51.238 | -25.495 | 0.1 | | | 07:29:02 | 09:31:59 | | | | | TCH | 2019-09-03 | 2019-09-04 | 54.283 | -18.141 | 0.1 | | | 08:27:57 | 08:21:00 | | | | | TCH | 2019-09-03 | 2019-09-03 | 56.188 | -18.141 | 0.1 | | | 09:00:05 | 09:06:35 | | | | | TCH | 2019-09-03 | 2019-09-04 | 68.45 | -14.505 | 0.1 | | | 10:05:03 | 09:57:30 | | | | | TCH | 2019-09-04 | 2019-09-04 | 62.608 | -23.595 | 0.1 | | | 05:57:31 | 06:04:01 | | | | +-------+------------+------------+---------+---------+---------+ TStart and TEnd refer respectively to the time of the first and last exposure for a given tile. Observations are not necessarily continuous in this interval. The "Probability" column refers to the 2D spatial probability of the GW skymap enclosed in a given tile. Each tile is 1.9x1.9 degrees for both TCA and TCH and 4.2x4.2 degrees for TRE. The coordinating observations cover about 9% of the cumulative probability of the LALInference skymap available on Sep 2, 2019 11:21:57 UTC. The typical limiting magnitude in AB mode is 18.0 for a 60.0 s exposure for TCH and TCA and 17.0 for a 60.0 s exposure for TRE. The coverage map is available at: https://grandma-owncloud.lal.in2p3.fr/index.php/s/GDhyzNjw9xGJALH No significant transient candidates were found during our low latency analysis. GRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger Addicts) is a network of robotic telescopes connected all over the world with both photometry and spectrometry capabilities for Time-domain Astronomy (https://grandma.lal.in2p3.fr/). Details on the TAROT telescopes are available on the GRANDMA web pages.