TITLE: GCN CIRCULAR NUMBER: 25780 SUBJECT: LIGO/Virgo S190910h: No significant candidates in TAROT-GRANDMA observations DATE: 19/09/19 13:10:38 GMT FROM: Kateryna Barynova at Kiev Uni., GRANDMA K. Barynova (Kyiv Uni), H. Crisp (OzGrav-UWA), K. Noysena (Artemis, IRAP), C. Stachie (Artemis), M. Boer (Artemis), N. Christensen (Artemis), L. Eymar (Artemis), A. Klotz (IRAP), S. Antier (APC), S. Basa (LAM), D. Corre (LAL), M. Coughlin (Caltech), D. Coward (OzGrav- UWA), J.G. Ducoin (LAL), B. Gendre (OzGrav-UWA), P. Hello (LAL), C. Lachaud (APC), N. Leroy (LAL), D. Turpin (NAOC) Report on behalf of the TAROT network and GRANDMA collaborations. We performed tiled observations of LIGO/Virgo S190910h event with the TAROT-Calern (TCA) and TAROT-Chili (TCH) telescopes operating in the visible located respectively at Calern site at the Cote d'Azur observatory and La Silla ESO observatory (LaS/ESO). The observation started for TCA on 09/10/19 19:01:32 UTC which corresponds approximately to 632 minutes after the GW trigger time, for TCH on 09/11/19 09:31:19 UTC which corresponds approximately to 1502 minutes after the GW trigger time. We performed the following tiled observations : +-------+------------+------------+---------+---------+---------+ | Tele | TStart | TEnd | RA | DEC | Proba | | scope | [UTC] | [UTC] | [deg] | [deg] | [%] | |-------|------------+------------+---------+---------+---------| | TCA | 2019-09-10 | 2019-09-15 | 5.307 | 39.422 | <1 | | | 19:01:32 | 23:50:08 | | | | | TCA | 2019-09-10 | 2019-09-14 | 44.517 | 37.136 | <1 | | | 19:33:51 | 03:16:20 | | | | | TCA | 2019-09-10 | 2019-09-15 | 5.236 | 31.569 | <1 | | | 20:03:41 | 21:33:08 | | | | | TCA | 2019-09-10 | 2019-09-15 | 8.398 | 42.703 | <1 | | | 21:01:16 | 23:56:53 | | | | | TCA | 2019-09-10 | 2019-09-15 | 20.706 | 33.424 | <1 | | | 21:29:10 | 18:36:50 | | | | | TCA | 2019-09-10 | 2019-09-16 | 16.832 | 46.414 | <1 | | | 21:59:00 | 02:39:48 | | | | | TCA | 2019-09-11 | 2019-09-16 | 10.881 | 41.753 | <1 | | | 00:28:59 | 00:35:58 | | | | | TCA | 2019-09-11 | 2019-09-16 | 24.773 | 46.414 | <1 | | | 00:35:49 | 03:11:38 | | | | | TCA | 2019-09-11 | 2019-09-15 | 33.445 | 37.136 | <1 | | | 00:42:39 | 22:18:28 | | | | | TCA | 2019-09-11 | 2019-09-15 | 41.749 | 37.136 | <1 | | | 01:07:55 | 20:14:06 | | | | | TCA | 2019-09-11 | 2019-09-15 | 13.71 | 46.414 | <1 | | | 01:14:46 | 20:20:54 | | | | | TCA | 2019-09-11 | 2019-09-15 | 10.122 | 37.136 | <1 | | | 01:21:37 | 20:27:39 | | | | | TCA | 2019-09-11 | 2019-09-15 | 38.981 | 37.136 | <1 | | | 02:07:32 | 23:43:19 | | | | | TCA | 2019-09-11 | 2019-09-15 | 31.207 | 33.424 | <1 | | | 02:46:06 | 19:22:19 | | | | | TCA | 2019-09-11 | 2019-09-15 | 30.068 | 46.414 | <1 | | | 02:52:57 | 19:29:03 | | | | | TCA | 2019-09-11 | 2019-09-16 | 27.782 | 34.805 | <1 | | | 19:03:47 | 04:10:20 | | | | | TCA | 2019-09-11 | 2019-09-15 | 22.835 | 34.33 | <1 | | | 21:01:16 | 00:07:36 | | | | | TCA | 2019-09-11 | 2019-09-15 | 15.847 | 42.703 | <1 | | | 23:57:48 | 23:03:35 | | | | | TCA | 2019-09-13 | 2019-09-16 | 36.213 | 37.136 | <1 | | | 20:18:41 | 03:25:16 | | | | | TCA | 2019-09-13 | 2019-09-15 | 38.267 | 33.424 | <1 | | | 20:25:28 | 22:31:55 | | | | |-------|------------+------------+---------+---------+---------| | TCH | 2019-09-11 | 2019-09-13 | 44.649 | 29.05 | <1 | | | 09:31:19 | 06:37:59 | | | | | TCH | 2019-09-11 | 2019-09-16 | 220.434 | -28.657 | <1 | | | 23:25:37 | 01:01:25 | | | | | TCH | 2019-09-11 | 2019-09-16 | 218.309 | -36.323 | <1 | | | 23:32:25 | 01:08:13 | | | | | TCH | 2019-09-11 | 2019-09-16 | 212.727 | -38.616 | <1 | | | 23:44:21 | 01:21:49 | | | | | TCH | 2019-09-11 | 2019-09-14 | 208.557 | -38.616 | <1 | | | 23:51:09 | 01:55:45 | | | | | TCH | 2019-09-12 | 2019-09-16 | 223.201 | -36.323 | <1 | | | 00:37:06 | 02:13:53 | | | | | TCH | 2019-09-12 | 2019-09-16 | 227.454 | -30.868 | <1 | | | 00:43:54 | 02:20:41 | | | | | TCH | 2019-09-12 | 2019-09-15 | 206.262 | -49.05 | <1 | | | 00:50:43 | 23:57:21 | | | | | TCH | 2019-09-12 | 2019-09-16 | 226.017 | -32.686 | <1 | | | 01:03:06 | 02:40:00 | | | | | TCH | 2019-09-12 | 2019-09-16 | 223.918 | -38.616 | <1 | | | 01:09:54 | 02:46:48 | | | | | TCH | 2019-09-12 | 2019-09-16 | 220.402 | -41.777 | <1 | | | 01:16:42 | 00:23:11 | | | | | TCH | 2019-09-12 | 2019-09-16 | 209.252 | -36.323 | <1 | | | 01:35:48 | 00:42:17 | | | | | TCH | 2019-09-12 | 2019-09-16 | 215.47 | -41.777 | <1 | | | 01:42:36 | 00:49:05 | | | | | TCH | 2019-09-12 | 2019-09-16 | 215.525 | -38.616 | <1 | | | 02:08:35 | 01:15:01 | | | | | TCH | 2019-09-12 | 2019-09-16 | 225.94 | -36.323 | <1 | | | 23:27:18 | 02:33:12 | | | | | TCH | 2019-09-12 | 2019-09-14 | 224.619 | -30.868 | <1 | | | 23:53:08 | 23:29:18 | | | | | TCH | 2019-09-13 | 2019-09-15 | 218.323 | -38.616 | <1 | | | 00:19:08 | 02:25:31 | | | | | TCH | 2019-09-13 | 2019-09-15 | 206.988 | -36.323 | <1 | | | 01:03:49 | 00:40:55 | | | | | TCH | 2019-09-13 | 2019-09-16 | 211.311 | -32.686 | <1 | | | 23:28:00 | 01:33:52 | | | | | TCH | 2019-09-14 | 2019-09-15 | 221.12 | -38.616 | <1 | | | 23:29:36 | 02:05:32 | | | | +-------+------------+------------+---------+---------+---------+ TStart and TEnd refers respectively to the time of the first and last exposure for a given tile. Observations are not necessarily continuous in this interval. The Probability refers to the 2D spatial probability of the GW skymap enclosed in a given tile. Each tile is 1.9x1.9 degrees. These observations cover about 1.1% of the cumulative probability of the skymap. The typical limiting magnitude is 18.0 for a 60.0 s exposure. The coverage map is available at: https://grandma-owncloud.lal.in2p3.fr/index.php/s/fJdB1OS0Fj3Pg3t 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 TCA telescope are available on the GRANDMA web pages or on http://tarot.obs-hp.fr/. This circular is citable.