TITLE: GCN CIRCULAR NUMBER: 27409 SUBJECT: LIGO/Virgo S200316bj : No significant candidates in TAROT - FRAM - GRANDMA observations. DATE: 20/03/18 16:36:03 GMT FROM: Martin Blazek at HETH/IAA-CSIC M. Blazek (HETH/IAA-CSIC), B. Gendre (OzGrav-UWA), M. Masek (FZU), N. B. Orange (OWIS), Z. Vidadi (SHAO), M. Boer (Artemis), N. Christensen (Artemis), L. Eymar (Artemis), S. Karpov (FZU), A. Klotz (IRAP), K. Noysena (Artemis, IRAP), M. Prouza (FZU), S. Antier (APC), A. Coleiro (APC), D. Corre (IJCLab), M. Coughlin (UMN), D. Coward (OzGrav-UWA), J.-G. Ducoin (IJCLab), P. Hello (IJCLab), D. A. Kann (HETH/IAA-CSIC), N. Kochiashvili (Iliauni), C. Lachaud (APC), N. Leroy (IJCLab), C. Thoene (HETH/IAA-CSIC), D. Turpin (AIM-CEA), A. de Ugarte Postigo (IAA/CSIC, DARK/NBI), X. Wang (THU) report on behalf of the FRAM, TAROT and GRANDMA collaborations. We performed tiled observations of LIGO/Virgo S200316bj event with the FRAM-Auger, FRAM-CTA-N and TAROT-Calern (TCA) telescopes. FRAM-Auger is located at Pierre Auger Observatory. FRAM-CTA-N is located at Observatorio del Roque de los Muchachos. TCA is located at Calern site at the Cote d'Azur observatory. 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 limiting magnitude (AB mag) for a given exposure in seconds (s). +-------------+---------+----------+-------------+------------+ | Telescope | Delay | Filter | f.o.v. | Limiting | | | [min] | | [deg] | Mag. | |-------------+---------+----------+-------------+------------| | FRAM-Auger | 109 | R | 1.0 x 1.0 | 18.0 (60s) | | FRAM-CTA-N | 23 | R | 0.45 x 0.45 | 17.0 (90s) | | TCA | 16 | Clear | 1.9 x 1.9 | 18.0 (60s) | +-------------+---------+----------+-------------+------------+ We performed the following joint tiled observations [1] : +-------------+------------+------------+---------+---------+---------+ | Telescope | TStart | TEnd | RA | DEC | Proba | | | [UTC] | [UTC] | [deg] | [deg] | [%] | |-------------+------------+------------+---------+---------+---------| | FRAM-Auger | 2020-03-16 | 2020-03-16 | 278.710 | -75.405 | 0.2 | | | 23:46:15 | 23:50:41 | | | | | FRAM-Auger | 2020-03-16 | 2020-03-16 | 274.839 | -75.405 | 0.2 | | | 23:51:17 | 23:55:44 | | | | | FRAM-Auger | 2020-03-16 | 2020-03-17 | 277.241 | -76.378 | 0.2 | | | 23:56:18 | 00:00:45 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 276.364 | -74.432 | 0.2 | | | 00:01:19 | 00:05:46 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 270.968 | -75.405 | 0.2 | | | 00:06:21 | 00:10:48 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 280.000 | -74.432 | 0.2 | | | 00:11:25 | 00:15:52 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 273.103 | -76.378 | 0.2 | | | 00:16:29 | 00:20:55 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 281.379 | -76.378 | 0.2 | | | 00:21:32 | 00:25:59 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 272.727 | -74.432 | 0.2 | | | 00:26:36 | 00:31:03 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 282.581 | -75.405 | 0.1 | | | 00:31:40 | 00:36:07 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 269.091 | -74.432 | 0.1 | | | 00:36:44 | 00:41:11 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 267.097 | -75.405 | 0.1 | | | 00:41:45 | 00:46:12 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 268.966 | -76.378 | 0.1 | | | 00:46:48 | 00:51:15 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 265.455 | -74.432 | 0.1 | | | 00:51:50 | 00:56:17 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 261.818 | -74.432 | 0.1 | | | 00:56:51 | 01:01:18 | | | | | FRAM-Auger | 2020-03-17 | 2020-03-17 | 275.556 | -77.351 | 0.1 | | | 01:17:06 | 01:21:33 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.144 | 47.846 | 0.3 | | | 22:20:16 | 22:24:22 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.011 | 47.410 | 0.3 | | | 22:24:37 | 22:28:43 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.517 | 46.973 | 0.3 | | | 22:29:00 | 22:33:06 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.368 | 47.410 | 0.3 | | | 22:33:22 | 22:37:28 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.654 | 47.410 | 0.3 | | | 22:37:44 | 22:41:50 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.122 | 48.283 | 0.3 | | | 22:42:04 | 22:46:10 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.880 | 46.973 | 0.3 | | | 22:46:25 | 22:50:31 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.243 | 46.973 | 0.3 | | | 22:50:44 | 22:54:50 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.495 | 47.846 | 0.3 | | | 22:55:05 | 22:59:11 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.536 | 46.536 | 0.3 | | | 22:59:26 | 23:03:32 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 85.847 | 47.846 | 0.3 | | | 23:03:48 | 23:07:54 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.271 | 46.536 | 0.3 | | | 23:08:09 | 23:12:15 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 85.815 | 48.283 | 0.3 | | | 23:12:31 | 23:16:37 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 87.793 | 47.846 | 0.3 | | | 23:16:54 | 23:21:00 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.903 | 46.536 | 0.3 | | | 23:21:15 | 23:25:21 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.468 | 48.283 | 0.3 | | | 23:25:37 | 23:29:43 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 86.599 | 48.720 | 0.3 | | | 23:29:58 | 23:34:04 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 85.725 | 47.410 | 0.3 | | | 23:34:19 | 23:38:25 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 88.154 | 46.973 | 0.3 | | | 23:38:43 | 23:42:49 | | | | | FRAM-CTA-N | 2020-03-16 | 2020-03-16 | 88.441 | 47.846 | 0.2 | | | 23:43:04 | 23:47:10 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TCA | 2020-03-16 | 2020-03-17 | 88.223 | 48.270 | 4.1 | | | 22:13:21 | 20:41:36 | | | | | TCA | 2020-03-16 | 2020-03-17 | 88.303 | 46.414 | 3.9 | | | 22:20:04 | 20:48:21 | | | | | TCA | 2020-03-16 | 2020-03-17 | 85.656 | 46.414 | 3.9 | | | 22:45:09 | 20:55:06 | | | | | TCA | 2020-03-16 | 2020-03-17 | 87.758 | 44.558 | 2.0 | | | 22:57:18 | 21:07:16 | | | | | TCA | 2020-03-16 | 2020-03-17 | 88.824 | 50.125 | 1.7 | | | 23:04:05 | 21:14:19 | | | | | TCA | 2020-03-16 | 2020-03-17 | 90.950 | 48.270 | 1.5 | | | 23:10:49 | 21:21:01 | | | | | TCA | 2020-03-16 | 2020-03-17 | 85.205 | 44.558 | 1.3 | | | 23:17:33 | 01:30:54 | | | | | TCA | 2020-03-16 | 2020-03-17 | 82.768 | 48.270 | 1.2 | | | 23:29:42 | 19:09:57 | | | | | TCA | 2020-03-16 | 2020-03-17 | 83.009 | 46.414 | 1.1 | | | 23:36:30 | 19:16:41 | | | | | TCA | 2020-03-16 | 2020-03-17 | 83.155 | 50.125 | 1.0 | | | 23:43:14 | 19:23:26 | | | | | TCA | 2020-03-16 | 2020-03-16 | 69.886 | 44.558 | 0.8 | | | 23:49:59 | 23:56:18 | | | | | TCA | 2020-03-17 | 2020-03-17 | 67.333 | 44.558 | 0.7 | | | 00:02:08 | 19:42:22 | | | | | TCA | 2020-03-17 | 2020-03-17 | 86.524 | 51.981 | 0.7 | | | 00:08:55 | 19:49:09 | | | | | TCA | 2020-03-17 | 2020-03-17 | 91.659 | 50.125 | 0.6 | | | 00:15:40 | 00:22:00 | | | | | TCA | 2020-03-17 | 2020-03-17 | 67.126 | 46.414 | 0.6 | | | 00:28:03 | 20:08:17 | | | | | TCA | 2020-03-17 | 2020-03-17 | 85.495 | 48.270 | 4.2 | | | 00:34:51 | 20:34:51 | | | | | TCA | 2020-03-17 | 2020-03-17 | 85.989 | 50.125 | 2.5 | | | 01:00:50 | 01:07:10 | | | | | TCA | 2020-03-17 | 2020-03-17 | 90.950 | 46.414 | 1.3 | | | 18:56:52 | 21:31:02 | | | | | TCA | 2020-03-17 | 2020-03-17 | 90.312 | 44.558 | 0.8 | | | 19:29:17 | 19:35:37 | | | | | TCA | 2020-03-17 | 2020-03-17 | 69.773 | 46.414 | 0.6 | | | 19:55:11 | 20:01:31 | | | | +-------------+------------+------------+---------+---------+---------+ 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. These observations cover about 34.8% of the cumulative probability of the BAYESTAR skymap created on 2020-03-16 21:58:46 (UTC). The coverage map is available at: https://grandma-owncloud.lal.in2p3.fr/index.php/s/XgtMhPRxcyL09gR/ download?path=%2F&files=GRANDMA_S200316bj_1584480817.svg 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, https://doi.org/10.1093/mnras/stz2485 [2] S. Antier et al., MNRAS 2019, https://doi.org/10.1093/mnras/stz3142 [3] K. Noysena et al., ApJ 2019, arXiv:1910.02770