Open Access

Table A.1.

Swift/XRT observation log of SDSS J164100.10+345452.7.

Sequence Date Start time (UT) End time (UT) Exposure
MJD (mid) (yyyy-mm-dd hh:mm:ss) (yyyy-mm-dd hh:mm:ss) (s)
00011395003 58826.13783 2019-12-09 01:31:03 2019-12-09 05:05:53 2502
00011395004 58833.07074 2019-12-16 00:39:51 2019-12-16 02:43:52 2959
00011395005 58840.58190 2019-12-23 13:04:59 2019-12-23 14:50:53 2688
00011395006 58847.64448 2019-12-30 09:09:11 2019-12-30 21:46:54 2913
00011395007 58854.17679 2020-01-06 00:07:15 2020-01-06 08:21:53 2166
00011395008 58861.57894 2020-01-13 12:09:26 2020-01-13 15:37:54 3009
00011395009 58868.89399 2020-01-20 19:39:46 2020-01-20 23:14:54 2620
00011395010 58875.75798 2020-01-27 17:18:31 2020-01-27 19:04:26 1198
00011395011 58878.85233 2020-01-30 20:13:49 2020-01-30 20:40:52 1622
00011395013 58889.60558 2020-02-10 08:05:12 2020-02-10 20:58:52 3249
00011395014 58896.07517 2020-02-17 00:51:35 2020-02-17 02:44:53 2332
00011395015 58903.10809 2020-02-24 01:45:18 2020-02-24 03:25:59 1036
00011395017 58910.44720 2020-03-02 02:37:02 2020-03-02 18:50:54 2740
00011395018 58917.85224 2020-03-09 17:54:33 2020-03-09 22:59:53 2766
00011395019 58924.30035 2020-03-16 03:14:06 2020-03-16 11:10:53 3084
00011395020 58931.50555 2020-03-23 10:21:05 2020-03-23 13:54:53 2465
00011395021 58938.50374 2020-03-30 11:08:53 2020-03-30 13:01:52 2670
00011395022 58945.20770 2020-04-06 04:02:16 2020-04-06 05:55:54 2735
00011395023 58952.08435 2020-04-13 00:23:01 2020-04-13 03:39:54 2786
00011395024 58958.45545 2020-04-19 09:04:47 2020-04-19 12:46:53 2833
00011395025 58966.92002 2020-04-27 21:03:45 2020-04-27 23:05:53 3162
00011395026 58973.76286 2020-05-04 17:17:08 2020-05-04 19:19:52 2771
00011395027 58980.43370 2020-05-11 08:40:08 2020-05-11 12:08:55 2630
00011395028 58987.48241 2020-05-18 00:14:28 2020-05-18 22:54:52 2397
00011395029 58994.64205 2020-05-25 15:10:11 2020-05-25 15:38:54 1723
00011395030a 58996.16110 2020-05-27 03:49:06 2020-05-27 03:54:52 346
00011395032a 58997.30146 2020-05-28 00:31:22 2020-05-28 13:56:53 1484
00011395033a 58999.38572 2020-05-30 02:03:05 2020-05-30 16:27:46 1504
00011395034 59001.38639 2020-06-01 01:50:55 2020-06-01 16:41:52 3365
00011395035a 59006.16589 2020-06-05 19:03:53 2020-06-06 12:53:52 2344
00011395036a 59007.69577 2020-06-07 09:21:56 2020-06-08 00:01:53 2079
00011395037 59008.34756 2020-06-08 07:22:05 2020-06-08 09:18:52 2949
00011395038a 59009.90842 2020-06-09 20:15:22 2020-06-09 23:20:53 2129
00011395039a 59011.17429 2020-06-11 04:06:03 2020-06-11 04:15:52 589
00011395040 59015.69333 2020-06-15 11:38:54 2020-06-15 21:37:53 2608
00011395041 59022.49924 2020-06-22 09:21:53 2020-06-22 14:35:54 2705
00011395042a 59025.58544 2020-06-25 09:12:09 2020-06-25 18:53:53 1229
00011395043 59029.60794 2020-06-29 11:59:58 2020-06-29 17:10:53 2630
00011395044a 59032.92782 2020-07-02 21:16:13 2020-07-02 23:15:53 2655
00011395045 59036.21290 2020-07-06 00:15:16 2020-07-06 09:57:52 2680
00011395046a 59039.52393 2020-07-09 09:26:49 2020-07-09 15:42:06 1319
00011395047 59043.34032 2020-07-13 07:10:15 2020-07-13 09:09:52 3016
00011395048a 59046.52746 2020-07-16 05:16:12 2020-07-16 20:02:53 1647
00011395049 59050.35234 2020-07-20 06:37:52 2020-07-20 10:16:52 2344
00011395050 59057.34706 2020-07-27 07:19:39 2020-07-27 09:19:53 3056
00011395051 59064.65346 2020-08-03 11:24:03 2020-08-03 19:57:54 2873
00011395052 59071.58888 2020-08-10 12:27:25 2020-08-10 15:48:33 1176
00011395053 59074.64927 2020-08-13 15:29:00 2020-08-13 15:40:52 712
00011395054 59078.43118 2020-08-17 03:45:55 2020-08-17 16:55:52 2766

Notes. For the first year of monitoring, we report the observing sequence, date (MJD of the middle of the observation), start and end times (UTC), and XRT exposure time.

a

Data obtained through additional ToOs in response to the Metsähovi detection on 2020-05-24.

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