TITLE: GCN CIRCULAR NUMBER: 26361 SUBJECT: LIGO/Virgo S191204r: No significant candidates in FRAM-TAROT-GRANDMA observations. DATE: 19/12/06 09:36:03 GMT FROM: Tatyana Sadibekova at AIM-CEA Saclay T. Sadibekova (AIM-CEA), S. Beradze (Iliauni), D. Coward (OzGrav-UWA), C. Lachaud (APC), M. Boer (Artemis), N. Christensen (Artemis), L. Eymar (Artemis), S. Karpov, M. Masek, M. Prouza (FZU), A. Klotz (IRAP), K. Noysena (Artemis, IRAP), S. Antier (APC), A. Coleiro (APC), D. Corre (LAL), M. Coughlin (Caltech), J.G. Ducoin (LAL), B. Gendre (OzGrav-UWA), P. Hello (LAL), D. A. Kann (HETH/IAA-CSIC), N. Kochiashvili (Iliauni), N. Leroy (LAL), C. Thoene (HETH/IAA-CSIC), D. Turpin (NAOC), X. Wang (THU) report on behalf of the FRAM network, TAROT network and GRANDMA collaboration: We performed tiled observations of the LIGO/Virgo S191204r event with the FRAM-Auger, TAROT-Reunion (TRE), TAROT-Calern (TCA) and TAROT-Chili (TCH) telescopes, operating in the R-band for FRAM and Clear for TAROT, located respectively at Pierre Auger Observatory (Malargue, Argentina), Les Makes Astronomical Observatory, the Cote d'Azur Observatory and La Silla ESO (LaS/ESO). The following table shows for each telescope: the delay in minutes from the trigger, which filter is used, the field of view of the telescope in degrees and the typical magnitude (AB mag) for a given exposure in seconds: +-------------+---------+----------+-----------+------------+ | Telescope | Delay | Filter | f.o.v. | Limiting | | | [min] | | [deg] | Mag. | |-------------+---------+----------+-----------+------------| | FRAM-Auger | 446 | R | 1.0 x 1.0 | 18.0 (60s) | | TCA | 53 | Clear | 1.9 x 1.9 | 18.0 (60s) | | TCH | 451 | Clear | 1.9 x 1.9 | 18.0 (60s) | | TRE | 60 | Clear | 4.2 x 4.2 | 17.0 (60s) | +-------------+---------+----------+-----------+------------+ We performed the following joint tiled observations [1] : +-------------+------------+------------+---------+---------+---------+ | Telescope | TStart | TEnd | RA | DEC | Proba | | | [UTC] | [UTC] | [deg] | [deg] | [%] | |-------------+------------+------------+---------+---------+---------| | FRAM-Auger | 2019-12-05 | 2019-12-05 | 101.168 | -42.324 | <0.1 | | | 00:40:35 | 00:45:02 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 102.482 | -42.324 | <0.1 | | | 00:45:37 | 00:50:04 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 94.532 | -41.351 | <0.1 | | | 00:50:42 | 00:55:09 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 95.827 | -41.351 | <0.1 | | | 00:55:44 | 01:00:11 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 99.854 | -42.324 | <0.1 | | | 01:00:47 | 01:05:14 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 103.796 | -42.324 | <0.1 | | | 01:05:50 | 01:10:17 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 91.915 | -40.378 | <0.1 | | | 01:10:54 | 01:15:21 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 98.540 | -42.324 | <0.1 | | | 01:15:57 | 01:20:24 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 90.638 | -40.378 | <0.1 | | | 01:21:00 | 01:25:27 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 97.122 | -41.351 | <0.1 | | | 01:26:04 | 01:30:31 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 108.000 | -43.297 | <0.1 | | | 01:31:09 | 01:35:36 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 109.333 | -43.297 | <0.1 | | | 01:36:11 | 01:40:37 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 93.237 | -41.351 | <0.1 | | | 01:41:15 | 01:45:42 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 106.667 | -43.297 | <0.1 | | | 01:46:20 | 01:50:47 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 110.667 | -43.297 | <0.1 | | | 01:51:23 | 01:55:50 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 46.703 | -2.432 | <0.1 | | | 01:56:32 | 02:00:59 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 112.000 | -43.297 | <0.1 | | | 02:01:42 | 02:06:08 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 89.362 | -40.378 | <0.1 | | | 02:06:47 | 02:11:14 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 88.112 | -39.405 | <0.1 | | | 02:11:50 | 02:16:16 | | | | | FRAM-Auger | 2019-12-05 | 2019-12-05 | 98.417 | -41.351 | <0.1 | | | 02:16:53 | 02:21:20 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TCA | 2019-12-04 | 2019-12-04 | 52.500 | -9.256 | <0.1 | | | 18:07:48 | 22:29:08 | | | | | TCA | 2019-12-04 | 2019-12-05 | 37.174 | 19.485 | <0.1 | | | 18:14:34 | 00:35:54 | | | | | TCA | 2019-12-04 | 2019-12-04 | 40.531 | 13.012 | <0.1 | | | 18:21:19 | 18:27:38 | | | | | TCA | 2019-12-04 | 2019-12-05 | 46.867 | -7.445 | <0.1 | | | 18:33:44 | 01:25:19 | | | | | TCA | 2019-12-04 | 2019-12-05 | 35.627 | 16.248 | <0.1 | | | 18:40:29 | 03:01:14 | | | | | TCA | 2019-12-04 | 2019-12-04 | 36.751 | 21.340 | <0.1 | | | 18:47:14 | 18:53:33 | | | | | TCA | 2019-12-04 | 2019-12-05 | 31.777 | 26.002 | <0.1 | | | 18:59:40 | 01:50:44 | | | | | TCA | 2019-12-04 | 2019-12-05 | 32.153 | 27.857 | <0.1 | | | 19:13:09 | 02:48:18 | | | | | TCA | 2019-12-04 | 2019-12-05 | 53.833 | -19.009 | <0.1 | | | 19:54:21 | 00:08:39 | | | | | TCA | 2019-12-04 | 2019-12-05 | 48.000 | -0.928 | <0.1 | | | 20:56:24 | 01:44:10 | | | | | TCA | 2019-12-04 | 2019-12-04 | 31.579 | 29.713 | <0.1 | | | 21:22:19 | 21:28:38 | | | | | TCA | 2019-12-04 | 2019-12-05 | 32.862 | 22.290 | <0.1 | | | 21:36:08 | 02:23:03 | | | | | TCA | 2019-12-04 | 2019-12-05 | 41.986 | 0.928 | <0.1 | | | 21:48:14 | 02:36:38 | | | | | TCA | 2019-12-04 | 2019-12-05 | 35.248 | 25.527 | <0.1 | | | 22:01:44 | 00:19:39 | | | | | TCA | 2019-12-04 | 2019-12-04 | 52.929 | -15.298 | 0.4 | | | 22:16:06 | 22:22:26 | | | | | TCA | 2019-12-04 | 2019-12-04 | 62.133 | -21.340 | <0.1 | | | 23:21:24 | 23:27:43 | | | | | TCA | 2019-12-04 | 2019-12-04 | 57.849 | -23.671 | 0.1 | | | 23:44:59 | 23:46:59 | | | | | TCA | 2019-12-05 | 2019-12-05 | 38.221 | 9.300 | <0.1 | | | 02:23:34 | 02:29:53 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TCH | 2019-12-05 | 2019-12-05 | 86.410 | -38.616 | <0.1 | | | 00:46:01 | 08:22:19 | | | | | TCH | 2019-12-05 | 2019-12-05 | 69.116 | -30.868 | 5.9 | | | 00:52:47 | 05:59:04 | | | | | TCH | 2019-12-05 | 2019-12-05 | 60.177 | -21.777 | 0.3 | | | 00:59:33 | 08:31:31 | | | | | TCH | 2019-12-05 | 2019-12-05 | 100.458 | -43.595 | <0.1 | | | 01:11:59 | 06:16:10 | | | | | TCH | 2019-12-05 | 2019-12-05 | 68.671 | -29.050 | 1.1 | | | 01:18:46 | 06:25:17 | | | | | TCH | 2019-12-05 | 2019-12-05 | 59.669 | -23.595 | 0.3 | | | 01:25:31 | 04:01:49 | | | | | TCH | 2019-12-05 | 2019-12-05 | 36.000 | 18.223 | <0.1 | | | 01:37:59 | 06:44:29 | | | | | TCH | 2019-12-05 | 2019-12-05 | 88.733 | -38.141 | <0.1 | | | 01:44:41 | 06:51:15 | | | | | TCH | 2019-12-05 | 2019-12-05 | 35.236 | 20.041 | <0.1 | | | 01:51:26 | 04:27:57 | | | | | TCH | 2019-12-05 | 2019-12-05 | 69.398 | -32.686 | 4.7 | | | 02:03:49 | 07:10:08 | | | | | TCH | 2019-12-05 | 2019-12-05 | 60.000 | -19.959 | <0.1 | | | 02:10:36 | 07:12:38 | | | | | TCH | 2019-12-05 | 2019-12-05 | 71.226 | -30.000 | 1.6 | | | 02:29:44 | 07:36:04 | | | | | TCH | 2019-12-05 | 2019-12-05 | 120.105 | -44.070 | <0.1 | | | 02:36:31 | 07:42:49 | | | | | TCH | 2019-12-05 | 2019-12-05 | 33.337 | 25.495 | <0.1 | | | 02:43:21 | 05:19:38 | | | | | TCH | 2019-12-05 | 2019-12-05 | 134.460 | -39.959 | <0.1 | | | 04:47:22 | 07:21:31 | | | | | TCH | 2019-12-05 | 2019-12-05 | 40.883 | 10.950 | <0.1 | | | 06:31:25 | 06:35:34 | | | | | TCH | 2019-12-05 | 2019-12-05 | 137.982 | -38.616 | <0.1 | | | 07:49:22 | 07:55:40 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TRE | 2019-12-04 | 2019-12-04 | 49.655 | -8.182 | 1.2 | | | 18:14:49 | 22:36:01 | | | | | TRE | 2019-12-04 | 2019-12-04 | 77.143 | -36.818 | 39.8 | | | 19:18:16 | 19:24:38 | | | | | TRE | 2019-12-04 | 2019-12-04 | 65.455 | -28.636 | 1.0 | | | 19:33:42 | 19:37:50 | | | | | TRE | 2019-12-04 | 2019-12-04 | 109.091 | -40.909 | <0.1 | | | 19:43:46 | 19:50:07 | | | | | TRE | 2019-12-04 | 2019-12-05 | 50.233 | -12.273 | 1.1 | | | 19:57:02 | 00:17:35 | | | | | TRE | 2019-12-04 | 2019-12-04 | 120.000 | -40.909 | <0.1 | | | 20:09:17 | 20:15:33 | | | | | TRE | 2019-12-04 | 2019-12-04 | 125.455 | -40.909 | <0.1 | | | 20:22:32 | 20:28:54 | | | | | TRE | 2019-12-04 | 2019-12-04 | 38.571 | 16.364 | <0.1 | | | 20:34:53 | 20:41:14 | | | | | TRE | 2019-12-04 | 2019-12-04 | 45.000 | -4.091 | 0.4 | | | 20:54:02 | 21:00:18 | | | | | TRE | 2019-12-04 | 2019-12-04 | 130.909 | -40.909 | <0.1 | | | 21:06:59 | 21:13:20 | | | | | TRE | 2019-12-04 | 2019-12-04 | 92.727 | -40.909 | <0.1 | | | 22:16:26 | 22:22:42 | | | | | TRE | 2019-12-04 | 2019-12-04 | 82.286 | -36.818 | 12.4 | | | 22:41:57 | 22:48:13 | | | | | TRE | 2019-12-04 | 2019-12-04 | 72.973 | -32.727 | 14.4 | | | 23:07:43 | 23:14:04 | | | | | TRE | 2019-12-04 | 2019-12-04 | 63.000 | -24.545 | 0.6 | | | 23:26:41 | 23:32:57 | | | | | TRE | 2019-12-04 | 2019-12-04 | 54.419 | -12.273 | 0.4 | | | 23:52:11 | 23:58:33 | | | | +-------------+------------+------------+---------+---------+---------+ 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 refers to the 2D spatial probability of the GW skymap enclosed in a given tile. These observations cover about 84% of the cumulative probability of the BAYESTAR skymap created on 2019-12-04 18:02:07 (UTC). The coverage map is available at: https://grandma-owncloud.lal.in2p3.fr/index.php/s/PqlwSoGEclSr2VJ No significant transient candidates were found during our low latency analysis [2,3]. 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 [2](https://grandma.lal.in2p3.fr/). Details on the different telescopes are available on the GRANDMA web pages. [1] M. W Coughlin et al., MNRAS 2019, doi.org/10.1093/mnras/stz2485 [2] S. Antier et al., MNRAS 2019, arXiv:1910.11261 [3] K. Noysena et al., ApJ 2019, arXiv:1910.02770