LIGO/Virgo S200224ca : No significant candidates in TAROT - FRAM - GRANDMA observations
Abstract
report on behalf of the FRAM, TAROT and GRANDMA collaborations. We performed tiled observations of LIGO/Virgo S200224ca event with the FRAM-Auger, FRAM-CTA-N, TAROT-Calern (TCA), TAROT-Chili (TCH), TAROT- Reunion (TRE) 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. TCH is located at La Silla ESO observatory (LaS/ESO). TRE is located at Les Makes astronomical 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 | 415 | R | 1.0 x 1.0 | 18.0 (60s) | | FRAM-CTA-N | 20 | R | 0.45 x 0.45 | 17.0 (90s) | | TCA | 15 | Clear | 1.9 x 1.9 | 18.0 (60s) | | TCH | 301 | Clear | 1.9 x 1.9 | 18.0 (60s) | | TRE | 47 | 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 | 2020-02-25 | 2020-02-25 | 175.082 | -9.243 | 3.7 | | | 05:16:43 | 05:21:10 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 175.562 | -10.216 | 3.7 | | | 05:21:47 | 05:26:13 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 175.055 | -11.189 | 4.0 | | | 05:26:48 | 05:31:15 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.575 | -10.216 | 3.9 | | | 05:31:51 | 05:36:18 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.605 | -8.270 | 3.4 | | | 05:36:54 | 05:41:21 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 176.044 | -11.189 | 3.4 | | | 05:42:12 | 05:46:39 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.098 | -9.243 | 3.5 | | | 05:47:13 | 05:51:40 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 176.022 | -12.162 | 3.2 | | | 05:52:18 | 05:56:45 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.130 | -7.297 | 2.8 | | | 05:57:20 | 06:01:47 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 173.624 | -8.270 | 3.0 | | | 06:02:25 | 06:06:51 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 175.028 | -12.162 | 2.7 | | | 06:20:49 | 06:30:32 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 176.066 | -9.243 | 2.1 | | | 06:31:07 | 06:35:34 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 175.586 | -8.270 | 2.0 | | | 06:36:08 | 06:40:35 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 173.152 | -7.297 | 2.2 | | | 06:41:12 | 06:45:39 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 176.510 | -13.135 | 2.3 | | | 06:46:17 | 06:50:44 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.130 | -6.324 | 1.9 | | | 06:51:22 | 06:55:49 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 176.548 | -10.216 | 1.9 | | | 06:56:25 | 07:00:52 | | | | | FRAM-Auger | 2020-02-25 | 2020-02-25 | 174.066 | -11.189 | 2.2 | | | 07:01:27 | 07:05:54 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.905 | -9.823 | 0.9 | | | 22:41:52 | 22:45:58 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.336 | -10.260 | 0.9 | | | 22:46:12 | 22:50:18 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.690 | -9.387 | 0.9 | | | 22:50:32 | 22:54:38 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.348 | -9.823 | 0.9 | | | 22:54:52 | 22:58:58 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.779 | -10.260 | 0.9 | | | 22:59:11 | 23:03:17 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.553 | -10.697 | 0.9 | | | 23:03:32 | 23:07:38 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.995 | -10.697 | 0.9 | | | 23:07:51 | 23:11:57 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.212 | -11.134 | 0.9 | | | 23:12:16 | 23:16:22 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.657 | -11.134 | 0.9 | | | 23:16:42 | 23:20:48 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.461 | -9.823 | 0.9 | | | 23:21:03 | 23:25:09 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.591 | -8.513 | 0.8 | | | 23:25:28 | 23:29:35 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.247 | -9.387 | 0.8 | | | 23:34:14 | 23:38:20 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.133 | -9.387 | 0.8 | | | 23:38:34 | 23:42:40 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.693 | -8.950 | 0.7 | | | 23:43:00 | 23:47:06 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 175.429 | -11.571 | 0.8 | | | 23:47:27 | 23:51:33 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-24 | 174.149 | -8.513 | 0.8 | | | 23:51:53 | 23:55:59 | | | | | FRAM-CTA-N | 2020-02-24 | 2020-02-25 | 175.875 | -11.571 | 0.8 | | | 23:56:15 | 00:00:21 | | | | | FRAM-CTA-N | 2020-02-25 | 2020-02-25 | 174.377 | -8.076 | 0.7 | | | 00:00:51 | 00:04:57 | | | | | FRAM-CTA-N | 2020-02-25 | 2020-02-25 | 175.135 | -8.950 | 0.7 | | | 00:05:11 | 00:09:17 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TCA | 2020-02-24 | 2020-02-27 | 170.656 | -8.825 | 0.3 | | | 22:37:11 | 00:35:59 | | | | | TCA | 2020-02-24 | 2020-02-27 | 172.453 | -13.012 | 0.2 | | | 22:49:55 | 00:42:44 | | | | | TCA | 2020-02-24 | 2020-02-26 | 179.075 | -11.156 | 0.2 | | | 22:56:39 | 22:19:30 | | | | | TCA | 2020-02-25 | 2020-02-25 | 172.642 | 0.022 | 0.2 | | | 00:53:10 | 20:59:30 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TCH | 2020-02-25 | 2020-02-25 | 174.965 | -10.000 | 13.6 | | | 03:23:32 | 08:29:47 | | | | | TCH | 2020-02-25 | 2020-02-26 | 173.064 | -11.343 | 2.5 | | | 03:34:04 | 09:42:58 | | | | | TCH | 2020-02-25 | 2020-02-26 | 171.384 | -0.909 | 0.8 | | | 03:49:52 | 07:25:08 | | | | | TCH | 2020-02-25 | 2020-02-27 | 178.600 | -14.505 | 1.0 | | | 08:38:18 | 00:42:33 | | | | | TCH | 2020-02-25 | 2020-02-26 | 178.619 | -12.686 | 0.9 | | | 08:44:37 | 09:45:10 | | | | | TCH | 2020-02-25 | 2020-02-26 | 170.827 | -7.232 | 0.7 | | | 08:58:03 | 09:21:08 | | | | | TCH | 2020-02-26 | 2020-02-26 | 174.143 | -1.777 | 0.2 | | | 00:53:49 | 08:47:05 | | | | | TCH | 2020-02-26 | 2020-02-26 | 174.618 | -3.595 | 0.7 | | | 02:41:32 | 09:19:02 | | | | | TCH | 2020-02-26 | 2020-02-26 | 175.020 | -5.414 | 2.1 | | | 04:16:46 | 07:04:56 | | | | | ----- | ----- | ----- | ----- | ----- | ----- | | TRE | 2020-02-24 | 2020-02-26 | 175.909 | -4.091 | 3.0 | | | 23:08:49 | 00:02:00 | | | | | TRE | 2020-02-25 | 2020-02-25 | 175.814 | -12.273 | 33.5 | | | 18:30:11 | 18:36:33 | | | | | TRE | 2020-02-25 | 2020-02-26 | 173.793 | -8.182 | 36.5 | | | 23:23:32 | 01:06:18 | | | | | TRE | 2020-02-25 | 2020-02-26 | 171.818 | -4.091 | 9.7 | | | 23:36:44 | 19:42:42 | | | | | TRE | 2020-02-26 | 2020-02-26 | 177.931 | -8.182 | 5.3 | | | 01:18:59 | 01:25:16 | | | | | TRE | 2020-02-26 | 2020-02-26 | 175.714 | -16.364 | 4.1 | | | 19:49:32 | 19:55:54 | | | | +-------------+------------+------------+---------+---------+---------+ 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 93.3% of the cumulative probability of the BAYESTAR skymap created on 2020-02-24 22:23:22 (UTC). The coverage map is available at: https://grandma- owncloud.lal.in2p3.fr/index.php/s/XgtMhPRxcyL09gR/download?path=%2F&files=GRANDMA_S200224ca_1582797966.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
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2020
- Bibcode:
- 2020GCN.27238....1S