LIGO/Virgo S190910d : No significant candidates in TAROT-GRANDMA observations

We performed tiled observations of LIGO/Virgo S190910d event with theTAROT-Chile (TCH), TAROT-Calern (TCA) and TAROT-Reunion (TRE) telescopesoperating in the visible located respectively at La Silla ESOobservatory (LaS/ESO), the Calern site at the Cote d'Azur observatoryand at La Reunion Island, France. The observation started for TCA at09/10/19 02:26:06 UTC which corresponds approximately to 60 minutes after the GW trigger time, for TCH at 09/10/19 04:54:23 UTC whichcorresponds approximately to 208 minutes after the GW trigger time, andfor TRE at 09/10/19 19:42:20 UTC which corresponds approximately to 1096minutes after the GW trigger time. We performed the following tiledobservations : +-------+------------+------------+---------+---------+---------+ | Tele | TStart | TEnd | RA | DEC | Proba | | scope |[UTC] | [UTC] | [deg] | [deg] | [%] ||-------|------------+------------+---------+---------+---------| | TCA | 2019-09-10 | 2019-09-11 | 288.95 | 42.703 | 0.1 | | |02:26:06 | 00:23:41 | | | | | TCA |2019-09-10 | 2019-09-12 | 293.916 | 42.703 | 0.1 | | |02:38:12 | 03:53:25 | | | | | TCA |2019-09-10 | 2019-09-10 | 292.014 | 44.558 | 0.2 | | |03:10:43 | 03:12:43 | | | | | TCA |2019-09-10 | 2019-09-10 | 288.467 | 40.372 | 0.1 | | |19:03:55 | 19:10:25 | | | | | TCA |2019-09-10 | 2019-09-12 | 291.433 | 42.703 | 0.1 | | |19:10:44 | 00:25:43 | | | | | TCA |2019-09-10 | 2019-09-12 | 290.883 | 40.847 | 0.1 | | |19:43:07 | 00:18:54 | | | | | TCA |2019-09-10 | 2019-09-12 | 296.398 | 42.703 | 0.2 | | |20:21:59 | 01:17:51 | | | | | TCA |2019-09-10 | 2019-09-10 | 300.95 | 48.27 | 0.1 | | |20:28:49 | 23:05:01 | | | | | TCA |2019-09-10 | 2019-09-10 | 298.223 | 48.27 | 0.1 | | |20:40:45 | 20:47:15 | | | | | TCA |2019-09-10 | 2019-09-10 | 281.219 | 39.897 | 0.1 | | |20:47:35 | 23:23:44 | | | | | TCA |2019-09-10 | 2019-09-10 | 293.299 | 40.847 | 0.1 | | |20:54:25 | 23:30:34 | | | | | TCA |2019-09-10 | 2019-09-11 | 297.421 | 46.414 | 0.1 | | |22:19:34 | 00:55:47 | | | | | TCA |2019-09-10 | 2019-09-10 | 279.525 | 29.713 | 0.2 | | |22:26:24 | 22:32:55 | | | | | TCA |2019-09-10 | 2019-09-10 | 270.95 | 20.434 | 0.1 | | |23:30:54 | 23:37:26 | | | | | TCA |2019-09-11 | 2019-09-12 | 298.881 | 42.703 | 0.2 | | |00:59:25 | 03:01:04 | | | | | TCA |2019-09-11 | 2019-09-12 | 288.467 | 39.897 | 0.2 | | |01:31:13 | 01:24:36 | | | | | TCA |2019-09-11 | 2019-09-11 | 306.329 | 42.703 | 0.2 | | |01:38:03 | 19:01:53 | | | | | TCA |2019-09-11 | 2019-09-12 | 299.673 | 44.558 | 0.2 | | |01:44:53 | 03:46:39 | | | | | TCA |2019-09-11 | 2019-09-11 | 302.715 | 46.414 | 0.1 | | |02:23:09 | 21:56:23 | | | | | TCA |2019-09-11 | 2019-09-11 | 297.12 | 44.558 | 0.2 | | |02:30:02 | 22:03:09 | | | | | TCA |2019-09-11 | 2019-09-12 | 302.227 | 44.558 | 0.2 | | |03:15:20 | 03:07:52 | | | | | TCA |2019-09-11 | 2019-09-12 | 303.847 | 42.703 | 0.2 | | |03:22:11 | 03:14:37 | | | | | TCA |2019-09-11 | 2019-09-12 | 304.78 | 44.558 | 0.2 | | |03:29:01 | 01:11:08 | | | | | TCA |2019-09-11 | 2019-09-11 | 273.093 | 31.569 | 0.1 | | |19:14:29 | 23:40:37 | | | | | TCA |2019-09-11 | 2019-09-12 | 286.051 | 39.897 | 0.1 | | |19:21:15 | 01:56:16 | | | | | TCA |2019-09-11 | 2019-09-11 | 307.333 | 44.558 | 0.2 | | |19:27:59 | 21:43:59 | | | | | TCA |2019-09-11 | 2019-09-12 | 291.433 | 42.703 | 0.1 | | |19:59:49 | 00:25:43 | | | | | TCA |2019-09-12 | 2019-09-12 | 55.325 | -9.256 | 0.1 | | |00:26:15 | 00:32:35 | | | | | TCA |2019-09-12 | 2019-09-12 | 301.364 | 42.703 | 0.2 | | |02:41:47 | 02:48:05 | | | | | TCA |2019-09-13 | 2019-09-13 | 305.362 | 46.414 | 0.1 | | |21:16:13 | 21:22:32 | | | | | TCA |2019-09-13 | 2019-09-13 | 278.402 | 35.711 | 0.2 | | |22:01:36 | 22:07:56 | | | |+-------+------------+------------+---------+---------+---------+ | TCH | 2019-09-10 | 2019-09-10 | 71.936 | -43.595 | 0.5 | | |04:54:23 | 09:43:01 | | | | | TCH |2019-09-10 | 2019-09-10 | 68.305 | -38.141 | 0.4 | | |05:01:28 | 07:19:33 | | | | | TCH |2019-09-10 | 2019-09-11 | 73.993 | -45.414 | 0.5 | | |05:14:37 | 08:32:07 | | | | | TCH |2019-09-10 | 2019-09-10 | 70.627 | -38.141 | 0.3 | | |05:26:48 | 05:33:18 | | | | | TCH |2019-09-10 | 2019-09-10 | 77.221 | -52.686 | 0.5 | | |05:33:37 | 07:46:47 | | | | | TCH |2019-09-10 | 2019-09-10 | 84.283 | -56.323 | 0.4 | | |05:47:04 | 05:53:34 | | | | | TCH |2019-09-10 | 2019-09-10 | 71.326 | -47.232 | 0.5 | | |05:59:14 | 06:05:44 | | | | | TCH |2019-09-10 | 2019-09-10 | 83.782 | -54.505 | 0.4 | | |06:06:03 | 06:12:33 | | | | | TCH |2019-09-10 | 2019-09-11 | 71.385 | -45.414 | 0.5 | | |06:12:52 | 06:55:42 | | | | | TCH |2019-09-10 | 2019-09-11 | 72.473 | -39.959 | 0.3 | | |06:19:40 | 07:07:00 | | | | | TCH |2019-09-10 | 2019-09-11 | 76.74 | -47.232 | 0.4 | | |06:47:14 | 07:53:38 | | | | | TCH |2019-09-10 | 2019-09-11 | 69.991 | -41.777 | 0.5 | | |06:59:27 | 08:20:28 | | | | | TCH |2019-09-10 | 2019-09-11 | 74.075 | -49.05 | 0.5 | | |07:32:26 | 08:34:25 | | | | | TCH |2019-09-10 | 2019-09-10 | 76.888 | -49.05 | 0.5 | | |08:57:02 | 09:03:32 | | | | | TCH |2019-09-10 | 2019-09-11 | 74.033 | -47.232 | 0.5 | | |09:03:50 | 07:40:02 | | | | | TCH |2019-09-10 | 2019-09-11 | 70.089 | -39.959 | 0.4 | | |09:10:38 | 07:46:50 | | | | | TCH |2019-09-10 | 2019-09-11 | 80.596 | -54.505 | 0.5 | | |09:23:14 | 06:36:14 | | | | | TCH |2019-09-10 | 2019-09-10 | 80.272 | -52.686 | 0.4 | | |09:48:54 | 09:55:24 | | | | | TCH |2019-09-11 | 2019-09-11 | 69.401 | -43.595 | 0.5 | | |07:08:34 | 07:15:04 | | | | | TCH |2019-09-11 | 2019-09-11 | 71.263 | -49.05 | 0.5 | | |07:53:56 | 08:00:26 | | | | | TCH |2019-09-11 | 2019-09-11 | 74.17 | -52.686 | 0.5 | | |08:07:10 | 08:13:40 | | | | | TCH |2019-09-11 | 2019-09-14 | 67.705 | -39.959 | 0.4 | | |08:52:49 | 03:58:36 | | | | | TCH |2019-09-11 | 2019-09-13 | 77.41 | -54.505 | 0.5 | | |09:50:26 | 09:30:15 | | | | | TCH |2019-09-12 | 2019-09-14 | 74.121 | -50.868 | 0.5 | | |06:35:37 | 06:10:08 | | | | | TCH |2019-09-12 | 2019-09-13 | 77.048 | -50.868 | 0.5 | | |06:42:25 | 08:44:52 | | | | | TCH |2019-09-13 | 2019-09-13 | 80.95 | -56.323 | 0.5 | | |05:56:17 | 06:02:47 | | | |+-------+------------+------------+---------+---------+---------+ | TRE | 2019-09-10 | 2019-09-12 | 76.154 | -53.182 | 2.3 | | |19:42:20 | 21:40:33 | | | | | TRE |2019-09-10 | 2019-09-10 | 68.108 | -32.727 | 1.2 | | |19:55:17 | 20:01:51 | | | | | TRE |2019-09-10 | 2019-09-13 | 65.455 | -40.909 | 1.9 | | |20:26:43 | 00:13:13 | | | | | TRE |2019-09-10 | 2019-09-12 | 60.779 | -28.636 | 1.4 | | |20:40:01 | 22:57:13 | | | | | TRE |2019-09-10 | 2019-09-10 | 63 | -24.545 | 1.1 | | |20:52:16 | 20:58:44 | | | | | TRE |2019-09-10 | 2019-09-13 | 84.255 | -57.273 | 1.9 | | |21:53:12 | 00:26:27 | | | | | TRE |2019-09-10 | 2019-09-12 | 69.677 | -45 | 2.3 | | |22:06:21 | 00:29:45 | | | | | TRE |2019-09-10 | 2019-09-12 | 65.455 | -28.636 | 1.1 | | |22:31:13 | 21:27:20 | | | | | TRE |2019-09-10 | 2019-09-10 | 72 | -36.818 | 1.1 | | |22:44:27 | 22:51:01 | | | | | TRE |2019-09-10 | 2019-09-10 | 82.105 | -49.091 | 1.1 | | |23:03:28 | 23:09:56 | | | | | TRE |2019-09-10 | 2019-09-12 | 100 | -65.455 | 1.2 | | |23:16:21 | 23:28:34 | | | | | TRE |2019-09-11 | 2019-09-13 | 61.714 | -36.818 | 1.3 | | |19:17:10 | 01:10:44 | | | | | TRE |2019-09-11 | 2019-09-13 | 58.5 | -24.545 | 1.2 | | |19:29:41 | 01:23:57 | | | | | TRE |2019-09-12 | 2019-09-12 | 75.79 | -49.091 | 2.3 | | |00:11:02 | 23:41:55 | | | | | TRE |2019-09-12 | 2019-09-12 | 66.857 | -36.818 | 1.9 | | |00:36:30 | 00:43:04 | | | | | TRE |2019-09-12 | 2019-09-13 | 76.596 | -57.273 | 1.6 | | |01:20:51 | 00:52:08 | | | | | TRE |2019-09-12 | 2019-09-12 | 69.474 | -49.091 | 1.7 | | |20:10:59 | 20:17:33 | | | | | TRE |2019-09-12 | 2019-09-12 | 70.909 | -40.909 | 2.1 | | |21:46:19 | 21:52:47 | | | | | TRE |2019-09-13 | 2019-09-13 | 83.077 | -53.182 | 1.7 | | |00:32:21 | 00:38:49 | | | | | TRE |2019-09-13 | 2019-09-13 | 63.243 | -32.727 | 1.6 | | |19:47:45 | 19:54:13 | | | | | TRE |2019-09-13 | 2019-09-13 | 85.714 | -61.364 | 1.5 | | |20:00:58 | 20:07:32 | | | |+-------+------------+------------+---------+---------+---------+ TStart and TEnd refers respectively to the time of the first and lastexposure for a given tile. Observations are not necessarily continuousin this interval. The Probability refers to the 2D spatial probabilityof the GW skymap enclosed in a given tile. Each tile is 1.9x1.9 degreesfor both TCA and TCH and 4.2x4.2 degrees for TRE. These observationscover about 37% of the cumulative probability of the LALInference skymapavailable on Sep 10, 2019 22:33:43 UTC. The typical limiting magnitudein AB mode is 18.0 for a 60.0 s exposure for TCH and TCA and 17.0 for a60.0 s exposure for TRE. The coverage map is available at:https://grandma-owncloud.lal.in2p3.fr/index.php/s/D0YLFF9t7LBekQM Nosignificant transient candidates were found during our low latencyanalysis. GRANDMA (Global Rapid Advanced Network Devoted to theMulti-messenger Addicts) is a network of robotic telescopes connectedall over the world with both photometry and spectrometry capabilitiesfor Time-domain Astronomy (https://grandma.lal.in2p3.fr/). Details onthe TAROT telescopes are available on the GRANDMA web pages.