{ "bibcode": "2020GCN.27168....1B", "body": "M. Blazek (HETH/IAA-CSIC), S. Antier (APC), N. Kochiashvili (Iliauni),\n C. Stachie (Artemis), (FZU), M. Boer (Artemis), N. Christensen\n(Artemis), L. Eymar (Artemis), S. Karpov (FZU), M. Prouza (FZU),\nA. Klotz (IRAP), M. Masek (FZU), K. Noysena (Artemis, IRAP),\nA. Coleiro (APC), D. Corre (IJCLab), M. Coughlin (UMN), D. Coward\n(OzGrav-UWA), J.-G. Ducoin (IJCLab), B. Gendre (OzGrav-UWA), P. Hello\n(IJCLab), D. A. Kann (HETH/IAA-CSIC), C. Lachaud (APC), N. Leroy\n(IJCLab), C. Thoene (HETH/IAA-CSIC), D. Turpin (AIM-CEA), X. Wang (THU)\n\nreport on behalf of the FRAM, TAROT and GRANDMA collaborations.\n\nWe performed tiled observations of LIGO/Virgo S200219ac event with the\n FRAM-CTA-N, TAROT-Calern (TCA), TAROT-Chili (TCH), TAROT-Reunion\n(TRE) telescopes.\n\nFRAM-CTA-N is located at Observatorio del Roque de los Muchachos. TCA\nis located at Calern site at the Cote d'Azur observatory. TCH is\nlocated at La Silla ESO observatory (LaS/ESO). TRE is located at Les\nMakes astronomical observatory.\n\nThe following table shows for each telescope: the delay in minutes\nfrom the trigger, which filter is used, the field of view of the\ntelescope in degrees and the typical limiting magnitude (AB mag) for a\n given exposure in seconds (s).\n\n+-------------+---------+----------+-------------+------------+\n| Telescope | Delay | Filter | f.o.v. | Limiting |\n| | [min] | | [deg] | Mag. |\n|-------------+---------+----------+-------------+------------|\n| FRAM-CTA-N | 799 | R | 0.45 x 0.45 | 17.0 (90s) |\n| TCA | 512 | Clear | 1.9 x 1.9 | 18.0 (60s) |\n| TCH | 878 | Clear | 1.9 x 1.9 | 18.0 (60s) |\n| TRE | 367 | Clear | 4.2 x 4.2 | 17.0 (60s) |\n+-------------+---------+----------+-------------+------------+\n\nWe performed the following joint tiled observations [1] :\n\n+-------------+------------+------------+---------+---------+---------+\n| Telescope | TStart | TEnd | RA | DEC | Proba |\n| | [UTC] | [UTC] | [deg] | [deg] | [%] |\n|-------------+------------+------------+---------+---------+---------|\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 189.377 | 55.273 | <0.1 |\n| | 23:03:15 | 23:07:21 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 188.615 | 55.273 | <0.1 |\n| | 23:07:40 | 23:11:46 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 188.613 | 53.963 | <0.1 |\n| | 23:12:01 | 23:16:07 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 188.753 | 55.710 | <0.1 |\n| | 23:16:27 | 23:20:32 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 190.140 | 55.273 | <0.1 |\n| | 23:20:52 | 23:24:59 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 190.414 | 54.837 | <0.1 |\n| | 23:25:18 | 23:29:24 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 189.749 | 55.710 | <0.1 |\n| | 23:29:43 | 23:33:49 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 190.903 | 55.273 | <0.1 |\n| | 23:34:09 | 23:38:14 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 188.149 | 54.837 | <0.1 |\n| | 23:38:30 | 23:42:35 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 187.395 | 54.837 | <0.1 |\n| | 23:42:49 | 23:46:55 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 188.796 | 56.147 | <0.1 |\n| | 23:47:11 | 23:51:17 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-19 | 191.168 | 54.837 | <0.1 |\n| | 23:51:33 | 23:55:39 | | | |\n| FRAM-CTA-N | 2020-02-19 | 2020-02-20 | 189.465 | 53.963 | <0.1 |\n| | 23:55:54 | 00:00:00 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 190.355 | 56.147 | <0.1 |\n| | 00:00:14 | 00:04:20 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 190.204 | 53.963 | <0.1 |\n| | 00:04:35 | 00:08:41 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 187.740 | 55.273 | <0.1 |\n| | 00:09:01 | 00:13:07 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 189.659 | 54.837 | <0.1 |\n| | 00:13:22 | 00:17:28 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 188.904 | 54.837 | <0.1 |\n| | 00:17:47 | 00:21:53 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 189.576 | 56.147 | <0.1 |\n| | 00:22:06 | 00:26:12 | | | |\n| FRAM-CTA-N | 2020-02-20 | 2020-02-20 | 186.640 | 54.837 | <0.1 |\n| | 00:26:27 | 00:30:33 | | | |\n| ----- | ----- | ----- | ----- | ----- | ----- |\n| TCA | 2020-02-19 | 2020-02-21 | 192.726 | 57.548 | 0.6 |\n| | 18:16:12 | 20:26:32 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 174.910 | 39.897 | 0.5 |\n| | 18:22:58 | 18:00:16 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 192.200 | 61.259 | 0.5 |\n| | 18:29:42 | 20:38:56 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 190.840 | 63.115 | 0.5 |\n| | 19:08:04 | 21:18:11 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 177.326 | 40.847 | 0.4 |\n| | 19:14:52 | 21:24:53 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 190.593 | 55.692 | 1.0 |\n| | 19:21:37 | 19:21:14 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 186.852 | 51.981 | 0.7 |\n| | 19:53:22 | 20:00:37 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 193.807 | 55.692 | 0.6 |\n| | 20:06:56 | 20:13:03 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 194.796 | 63.115 | 0.6 |\n| | 20:13:40 | 20:19:48 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 195.950 | 61.259 | 0.5 |\n| | 20:45:18 | 20:45:44 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 185.997 | 57.548 | 0.5 |\n| | 20:52:07 | 20:59:12 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 177.226 | 42.703 | 0.5 |\n| | 20:58:52 | 18:35:14 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 187.379 | 55.692 | 0.9 |\n| | 21:37:08 | 19:34:43 | | | |\n| TCA | 2020-02-19 | 2020-02-20 | 185.565 | 53.837 | 0.7 |\n| | 21:50:41 | 02:16:35 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 189.361 | 57.548 | 0.7 |\n| | 21:57:25 | 19:53:56 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 184.164 | 55.692 | 0.5 |\n| | 23:14:53 | 18:41:59 | | | |\n| TCA | 2020-02-19 | 2020-02-21 | 191.719 | 53.837 | 0.8 |\n| | 23:53:28 | 04:41:22 | | | |\n| TCA | 2020-02-20 | 2020-02-21 | 189.803 | 51.981 | 0.6 |\n| | 00:19:17 | 05:07:04 | | | |\n| TCA | 2020-02-20 | 2020-02-21 | 183.901 | 51.981 | 0.5 |\n| | 01:05:11 | 20:52:27 | | | |\n| TCA | 2020-02-20 | 2020-02-21 | 188.642 | 53.837 | 1.0 |\n| | 01:50:02 | 19:27:59 | | | |\n| ----- | ----- | ----- | ----- | ----- | ----- |\n| TCH | 2020-02-20 | 2020-02-21 | 22.252 | -30.868 | 0.9 |\n| | 00:21:31 | 02:36:49 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 23.172 | -34.505 | 0.9 |\n| | 00:23:37 | 02:30:31 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 24.805 | -32.686 | 0.9 |\n| | 00:27:50 | 02:41:22 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 25.394 | -34.505 | 0.8 |\n| | 00:39:27 | 02:58:07 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 17.991 | -30.868 | 0.8 |\n| | 00:52:22 | 01:06:59 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 8.529 | -17.273 | 0.3 |\n| | 01:02:53 | 01:09:06 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 16.602 | -21.777 | 0.2 |\n| | 01:22:20 | 01:07:41 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 36.986 | -41.777 | 0.2 |\n| | 01:37:48 | 03:54:37 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 19.678 | -29.050 | 1.2 |\n| | 01:46:14 | 02:02:05 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 17.597 | -29.050 | 1.1 |\n| | 01:55:52 | 02:04:11 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 17.314 | -27.232 | 1.1 |\n| | 01:57:59 | 02:06:44 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 22.637 | -32.686 | 1.0 |\n| | 02:10:36 | 02:19:09 | | | |\n| TCH | 2020-02-20 | 2020-02-20 | 20.122 | -30.868 | 1.0 |\n| | 02:20:12 | 02:32:57 | | | |\n| TCH | 2020-02-20 | 2020-02-21 | 170.011 | 25.495 | 0.2 |\n| | 03:47:11 | 06:30:53 | | | |\n| TCH | 2020-02-21 | 2020-02-21 | 20.468 | -32.686 | 0.8 |\n| | 00:30:45 | 00:36:57 | | | |\n| TCH | 2020-02-21 | 2020-02-21 | 8.450 | -14.980 | 0.3 |\n| | 00:45:55 | 00:54:14 | | | |\n| TCH | 2020-02-21 | 2020-02-21 | 6.634 | -16.323 | 0.2 |\n| | 00:54:20 | 00:58:26 | | | |\n| TCH | 2020-02-21 | 2020-02-21 | 19.359 | -27.232 | 1.0 |\n| | 02:11:27 | 02:24:12 | | | |\n| ----- | ----- | ----- | ----- | ----- | ----- |\n| TRE | 2020-02-19 | 2020-02-19 | 14.595 | -32.727 | 0.6 |\n| | 15:51:04 | 15:57:26 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 24.324 | -32.727 | 4.1 |\n| | 16:04:16 | 15:57:55 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 18.000 | -24.545 | 2.9 |\n| | 16:16:33 | 16:11:12 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 25.714 | -36.818 | 2.2 |\n| | 16:42:21 | 16:36:33 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 14.026 | -28.636 | 1.6 |\n| | 17:13:59 | 17:08:08 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 46.452 | -45.000 | 1.2 |\n| | 17:52:19 | 17:46:24 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 30.857 | -36.818 | 0.9 |\n| | 18:17:49 | 18:12:03 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 34.839 | -45.000 | 0.7 |\n| | 18:45:31 | 18:37:29 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 165.405 | 32.727 | 0.7 |\n| | 18:56:44 | 18:50:56 | | | |\n| TRE | 2020-02-19 | 2020-02-19 | 170.270 | 32.727 | 2.4 |\n| | 20:17:26 | 20:23:42 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 175.135 | 32.727 | 1.6 |\n| | 20:49:04 | 21:53:11 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 168.312 | 28.636 | 1.4 |\n| | 21:20:58 | 22:25:08 | | | |\n| TRE | 2020-02-19 | 2020-02-19 | 172.987 | 28.636 | 1.1 |\n| | 21:53:12 | 21:59:28 | | | |\n| TRE | 2020-02-19 | 2020-02-20 | 166.500 | 24.545 | 0.7 |\n| | 22:37:46 | 23:43:55 | | | |\n| TRE | 2020-02-20 | 2020-02-20 | 50.526 | -49.091 | 1.4 |\n| | 17:14:45 | 17:21:01 | | | |\n| TRE | 2020-02-20 | 2020-02-20 | 20.571 | -36.818 | 1.2 |\n| | 17:27:55 | 17:34:12 | | | |\n+-------------+------------+------------+---------+---------+---------+\n\nTStart and TEnd refers respectively to the time of the first and last\nexposure for a given tile. Observations are not necessarily continuous\n in this interval.\nThe Probability refers to the 2D spatial probability of the GW skymap\nenclosed in a given tile.\n\nThese observations cover about 44.0% of the cumulative probability of\nthe BAYESTAR skymap created on 2020-02-19 11:14:17 (UTC).\n\n\nThe coverage map is available at:\nhttps://grandma-\nowncloud.lal.in2p3.fr/index.php/s/XgtMhPRxcyL09gR/download?\npath=%2F&files=GRANDMA_S200219ac_1582328915.svg\n\nNo significant transient candidates were found during our low latency\nanalysis [2,3].\n\nGRANDMA (Global Rapid Advanced Network Devoted to the Multi-messenger\nAddicts) is a network of robotic telescopes connected all over the\nworld with both photometry and spectrometry capabilities for Time-\ndomain Astronomy [2](https://grandma.lal.in2p3.fr/).\n\nDetails on the different telescopes are available on the GRANDMA web\npages.\n\n[1] M. W Coughlin et al., MNRAS 2019, https://doi.org/10.1093/mnras/stz2485\n[2] S. Antier et al., MNRAS 2020, https://doi.org/10.1093/mnras/stz3142\n[3] K. Noysena et al., ApJ 2019, arXiv:1910.02770", "circularId": 27168, "createdOn": 1582375337000, "email": "alf@iaa.es", "subject": "LIGO/Virgo S200219ac : No significant candidates in TAROT - FRAM - GRANDMA observations.", "submitter": "Martin Blazek at HETH/IAA-CSIC ", "eventId": "LIGO/Virgo S200219ac" }