Difference between revisions of "SGR1935+2154"
(→Data-taking Information) |
(→Data-taking Information) |
||
| Line 38: | Line 38: | ||
SGR 1935+2154 was observed during July 2021, September 2021, June 2022, October 2022 as follow up to external science alerts. | SGR 1935+2154 was observed during July 2021, September 2021, June 2022, October 2022 as follow up to external science alerts. | ||
SGR 1935+2154 was observed for a total of 37.7 hours over 118 runs in 17 nights. | SGR 1935+2154 was observed for a total of 37.7 hours over 118 runs in 17 nights. | ||
| + | |||
| + | Roughly half of the observations were conducted with MAGIC. | ||
Observations are quasi-simultaneous to other facilities observations, both at VHE and MWL. | Observations are quasi-simultaneous to other facilities observations, both at VHE and MWL. | ||
| − | + | Observations are '''simultaneous to 9 time of alerts''' of high-energy satellites triggered by SGR 1935+2154 bursts. | |
Most observations are in ''Wobble'' mode, though some runs were taken in ON mode but without OFF observations (this is the case for all October 2022 runs and 4 July 2021 runs). | Most observations are in ''Wobble'' mode, though some runs were taken in ON mode but without OFF observations (this is the case for all October 2022 runs and 4 July 2021 runs). | ||
Revision as of 11:51, 28 March 2024
Contents
General Information
- Name of the source: SGR 1935+2154
- Brief description of the source:
- Object type : Soft Gamma Repeater, Galactic Magnetar
- Other relevant information: Its simultaneous X-ray bursts (INTEGRAL, AGILE) and Fast radio Bursts (CHIME) on April 28th, 2020 were associated, providing the first evidence that FRBs can originate from magnetars.
- RA: 19 35 00.0 (hh mm ss), Dec: +21 53 59.1 (dd mm ss)
- RA, Dec in deg (ICRS): 293.75, 21.90
- Galactic Coordinates l=57.26, b=0.81
SGR 1935+2154 is a Galactic magnetar that presents two types of high-energy emission:
- the persistent emission at few keV
- the transient emission of short nonthermal bursts at keV−MeV. The transient emission is characterized by occasional activity period lasting days-weeks with tens-hundreds of random, short (≈0.1s) and irregular bursts.
People involved
- Gabriele Panebianco (gabriele.panebianco@inaf.it)
- Rubén López-Coto (rlopezcoto@iaa.es)
- Andrea Bulgarelli
- Pol Bordas
- Paolo Da Vela
- Tarek Hassan
- Alicia López-Oramas
- Ambra Di Piano
- Nicolò Parmiggiani
- Irene Jimenez Martinez
Presentations
- 2023-06-05 LST Analysis Call (reco meeting): link to pdf
- 2023-06-19 LST General Meeting: link to pdf
- 2023-07-21 LST Galactic Group Meeting: link to pdf
- 2023-11-08 LST General Meeting: link to pdf
- 2024-01-15 Contributed talk at VHEGAM Conference: link to SAPO XWiki
- 2024-02-19 LST Analysis Call (reco meeting): link to pdf
- 2024-03-22 LST Galactic Group Meeting: link to pdf
- 2024-04-15 Contributed poster at CTA Symposium: link to XWiki
Data-taking Information
SGR 1935+2154 was observed during July 2021, September 2021, June 2022, October 2022 as follow up to external science alerts. SGR 1935+2154 was observed for a total of 37.7 hours over 118 runs in 17 nights.
Roughly half of the observations were conducted with MAGIC.
Observations are quasi-simultaneous to other facilities observations, both at VHE and MWL.
Observations are simultaneous to 9 time of alerts of high-energy satellites triggered by SGR 1935+2154 bursts.
Most observations are in Wobble mode, though some runs were taken in ON mode but without OFF observations (this is the case for all October 2022 runs and 4 July 2021 runs).
| Run Number | Night | Run Start Time [UTC] | Run Elapsed Time [s] | Source Offset [deg] | Mean pointing azimuth [deg] | Mean pointing zenith [deg] | Used in stacked analysis | mode |
|---|---|---|---|---|---|---|---|---|
| 5154 | 20210706 | 2021-07-06 21:35:40.008366 | 967.415 | 0.348 | 81.331 | 56.930 | False | wobble |
| 5155 | 20210706 | 2021-07-06 21:55:39.538852 | 1016.190 | 0.451 | 83.681 | 51.829 | False | wobble |
| 5156 | 20210706 | 2021-07-06 22:18:14.314086 | 1053.514 | 0.372 | 85.327 | 47.133 | True | wobble |
| 5157 | 20210706 | 2021-07-06 22:41:17.329760 | 1205.443 | 0.434 | 88.929 | 42.344 | True | wobble |
| 5158 | 20210706 | 2021-07-06 23:03:40.273986 | 1205.356 | 0.357 | 90.827 | 37.672 | True | wobble |
| 5161 | 20210706 | 2021-07-06 23:38:21.458475 | 1206.221 | 0.443 | 96.226 | 29.316 | True | wobble |
| 5162 | 20210706 | 2021-07-07 00:00:21.764677 | 1205.398 | 0.442 | 100.261 | 24.532 | True | wobble |
| 5163 | 20210706 | 2021-07-07 00:25:00.965802 | 1443.322 | 0.368 | 104.802 | 19.462 | True | wobble |
| 5164 | 20210706 | 2021-07-07 00:49:25.963768 | 1145.974 | 0.436 | 116.293 | 14.803 | True | wobble |
| 5165 | 20210706 | 2021-07-07 01:10:44.258733 | 1203.290 | 0.365 | 127.337 | 10.904 | True | wobble |
| 5166 | 20210706 | 2021-07-07 01:32:50.001943 | 1203.480 | 0.437 | 158.649 | 7.453 | True | wobble |
| 5167 | 20210706 | 2021-07-07 01:54:27.456639 | 1206.198 | 0.367 | 195.814 | 6.820 | True | wobble |
| 5168 | 20210706 | 2021-07-07 02:16:10.395605 | 1205.429 | 0.436 | 224.205 | 9.957 | True | wobble |
| 5169 | 20210706 | 2021-07-07 02:38:19.418482 | 1205.540 | 0.370 | 241.561 | 13.290 | True | wobble |
| 5170 | 20210706 | 2021-07-07 02:59:59.232267 | 1205.947 | 0.432 | 252.307 | 18.372 | True | wobble |
| 5171 | 20210706 | 2021-07-07 03:22:42.369718 | 1203.333 | 0.367 | 258.984 | 22.682 | True | wobble |
| 5175 | 20210706 | 2021-07-07 04:15:42.475526 | 1205.977 | 0.434 | 266.547 | 34.509 | True | wobble |
| 5176 | 20210706 | 2021-07-07 04:35:08.352232 | 905.936 | 0.377 | 269.512 | 38.264 | True | wobble |
| 5192 | 20210707 | 2021-07-08 01:19:53.546984 | 1204.101 | 0.022 | 142.520 | 8.584 | False | ON |
| 5193 | 20210707 | 2021-07-08 01:41:14.972905 | 1205.786 | 0.021 | 177.694 | 6.946 | False | ON |
| 5194 | 20210707 | 2021-07-08 02:02:34.873506 | 1204.280 | 0.020 | 214.208 | 8.269 | False | ON |
| 5195 | 20210707 | 2021-07-08 02:16:24.810369 | 292.236 | 0.019 | 230.309 | 10.271 | False | ON |
| 5196 | 20210707 | 2021-07-08 02:25:59.058815 | 605.461 | 0.381 | 236.500 | 11.662 | True | wobble |
| 5197 | 20210707 | 2021-07-08 02:38:06.497275 | 606.417 | 0.418 | 245.497 | 14.658 | True | wobble |
| 5198 | 20210707 | 2021-07-08 02:51:02.354297 | 602.274 | 0.398 | 251.387 | 16.760 | True | wobble |
| 5199 | 20210707 | 2021-07-08 03:03:00.516614 | 605.874 | 0.402 | 252.977 | 19.611 | True | wobble |
| 5211 | 20210709 | 2021-07-09 22:50:58.651400 | 1205.470 | 0.370 | 90.657 | 37.872 | True | wobble |
| 5212 | 20210709 | 2021-07-09 23:15:16.868188 | 1205.343 | 0.428 | 94.403 | 31.785 | True | wobble |
| 5213 | 20210709 | 2021-07-09 23:46:33.454934 | 1205.261 | 0.399 | 98.543 | 25.197 | True | wobble |
| 5214 | 20210709 | 2021-07-10 00:10:33.631798 | 1201.304 | 0.402 | 106.053 | 20.354 | True | wobble |
| 5215 | 20210709 | 2021-07-10 00:34:57.851661 | 1204.504 | 0.376 | 112.827 | 15.470 | True | wobble |
| 5216 | 20210709 | 2021-07-10 01:00:10.746264 | 1206.832 | 0.422 | 131.291 | 10.101 | True | wobble |
| 5217 | 20210709 | 2021-07-10 01:24:30.383948 | 1205.869 | 0.398 | 160.492 | 6.922 | True | wobble |
| 5218 | 20210709 | 2021-07-10 01:49:41.124249 | 1206.164 | 0.403 | 205.604 | 8.073 | True | wobble |
| 5253 | 20210712 | 2021-07-13 00:58:23.075673 | 1205.001 | 0.379 | 138.150 | 9.080 | True | wobble |
| 5254 | 20210712 | 2021-07-13 01:23:14.131849 | 1206.654 | 0.420 | 184.029 | 6.975 | True | wobble |
| 5255 | 20210712 | 2021-07-13 01:47:16.445606 | 1203.150 | 0.398 | 221.435 | 8.531 | True | wobble |
| 5256 | 20210712 | 2021-07-13 02:11:20.228025 | 1201.871 | 0.403 | 239.169 | 13.172 | True | wobble |
| 5257 | 20210712 | 2021-07-13 02:33:55.047752 | 1205.168 | 0.383 | 250.357 | 17.114 | True | wobble |
| 5258 | 20210712 | 2021-07-13 02:58:36.310374 | 1206.582 | 0.415 | 258.359 | 23.067 | True | wobble |
| 5281 | 20210716 | 2021-07-17 01:58:45.359084 | 606.296 | 0.382 | 241.680 | 13.200 | True | wobble |
| 5284 | 20210716 | 2021-07-17 02:56:34.882860 | 1205.573 | 0.414 | 261.193 | 26.029 | True | wobble |
| 5285 | 20210716 | 2021-07-17 03:20:04.027781 | 1205.415 | 0.399 | 265.644 | 30.642 | True | wobble |
| 5286 | 20210716 | 2021-07-17 03:37:31.978401 | 486.510 | 0.401 | 266.766 | 34.734 | True | wobble |
| 5294 | 20210717 | 2021-07-18 00:00:54.795768 | 1205.661 | 0.376 | 111.738 | 15.997 | False | wobble |
| 5295 | 20210717 | 2021-07-18 00:24:54.352744 | 1205.205 | 0.422 | 127.894 | 10.745 | False | wobble |
| 5299 | 20210717 | 2021-07-18 01:13:54.687818 | 1206.271 | 0.398 | 200.712 | 6.971 | True | wobble |
| 5300 | 20210717 | 2021-07-18 01:37:59.408685 | 1206.359 | 0.403 | 229.105 | 10.732 | True | wobble |
| 5301 | 20210717 | 2021-07-18 02:03:47.384962 | 1205.794 | 0.383 | 246.089 | 14.978 | True | wobble |
| 5320 | 20210718 | 2021-07-19 00:20:59.428245 | 1206.284 | 0.378 | 125.137 | 11.347 | False | wobble |
| 5321 | 20210718 | 2021-07-19 00:45:18.481347 | 1206.659 | 0.421 | 157.894 | 7.455 | False | wobble |
| 5322 | 20210718 | 2021-07-19 01:10:06.164715 | 1203.304 | 0.398 | 200.913 | 6.987 | False | wobble |
| 5326 | 20210718 | 2021-07-19 01:53:36.855329 | 1206.637 | 0.402 | 242.509 | 14.294 | True | wobble |
| 5327 | 20210718 | 2021-07-19 02:18:57.552751 | 1202.194 | 0.384 | 253.242 | 18.914 | True | wobble |
| 5328 | 20210718 | 2021-07-19 02:43:21.359871 | 1201.198 | 0.414 | 260.142 | 24.866 | True | wobble |
| 5329 | 20210718 | 2021-07-19 03:07:08.815895 | 1206.109 | 0.399 | 264.874 | 29.535 | True | wobble |
| 5330 | 20210718 | 2021-07-19 03:30:44.162188 | 1206.552 | 0.401 | 266.901 | 34.969 | True | wobble |
| 6125 | 20210907 | 2021-09-07 20:59:10.755258 | 1205.524 | 0.378 | 124.154 | 11.577 | True | wobble |
| 6126 | 20210907 | 2021-09-07 21:23:12.990901 | 1205.299 | 0.421 | 155.315 | 7.588 | True | wobble |
| 6127 | 20210907 | 2021-09-07 21:47:15.248035 | 1205.164 | 0.398 | 196.709 | 6.816 | True | wobble |
| 6128 | 20210907 | 2021-09-07 22:10:35.035322 | 1205.448 | 0.403 | 226.375 | 10.253 | True | wobble |
| 6129 | 20210907 | 2021-09-07 22:33:47.974373 | 1205.418 | 0.383 | 243.388 | 13.879 | True | wobble |
| 6198 | 20210910 | 2021-09-10 21:00:37.748895 | 1157.028 | 0.421 | 139.966 | 8.843 | True | wobble |
| 6199 | 20210910 | 2021-09-10 21:22:28.734336 | 1159.121 | 0.398 | 171.222 | 6.611 | True | wobble |
| 6200 | 20210910 | 2021-09-10 21:43:20.062237 | 1172.043 | 0.403 | 207.669 | 8.199 | True | wobble |
| 6201 | 20210910 | 2021-09-10 22:06:16.572737 | 1400.066 | 0.382 | 232.938 | 10.951 | True | wobble |
| 6202 | 20210910 | 2021-09-10 22:38:58.567869 | 1208.935 | 0.416 | 251.895 | 18.029 | True | wobble |
| 6203 | 20210910 | 2021-09-10 23:00:16.579873 | 1166.859 | 0.398 | 258.398 | 22.026 | True | wobble |
| 6204 | 20210910 | 2021-09-10 23:21:18.495585 | 1202.413 | 0.402 | 260.967 | 26.864 | True | wobble |
| 6205 | 20210910 | 2021-09-10 23:42:55.358996 | 1211.386 | 0.387 | 265.112 | 31.062 | True | wobble |
| 6206 | 20210910 | 2021-09-11 00:02:55.673674 | 1217.310 | 0.411 | 268.387 | 36.205 | False | wobble |
| 6208 | 20210910 | 2021-09-11 00:47:32.362278 | 1206.405 | 0.399 | 272.881 | 45.754 | True | wobble |
| 6223 | 20210911 | 2021-09-11 22:47:39.440023 | 1188.808 | 0.384 | 254.708 | 19.958 | True | wobble |
| 6224 | 20210911 | 2021-09-11 23:09:07.997514 | 1188.388 | 0.414 | 260.555 | 25.306 | True | wobble |
| 6225 | 20210911 | 2021-09-11 23:30:04.701359 | 1148.914 | 0.399 | 264.754 | 29.356 | True | wobble |
| 6226 | 20210911 | 2021-09-11 23:49:53.932634 | 1204.881 | 0.401 | 266.265 | 33.963 | True | wobble |
| 6227 | 20210911 | 2021-09-12 00:12:02.313915 | 1172.191 | 0.390 | 269.596 | 38.313 | False | wobble |
| 6228 | 20210911 | 2021-09-12 00:30:34.922076 | 866.843 | 0.408 | 272.167 | 43.141 | False | wobble |
| 6229 | 20210911 | 2021-09-12 00:47:58.089294 | 906.975 | 0.401 | 274.398 | 46.445 | True | wobble |
| 6244 | 20210912 | 2021-09-12 21:53:20.006110 | 1284.220 | 0.382 | 228.547 | 10.084 | False | wobble |
| 6245 | 20210912 | 2021-09-12 22:15:07.177227 | 1181.297 | 0.417 | 245.585 | 14.756 | False | wobble |
| 6246 | 20210912 | 2021-09-12 22:36:24.544463 | 1197.066 | 0.398 | 254.190 | 18.612 | False | wobble |
| 6247 | 20210912 | 2021-09-12 22:58:01.640121 | 1232.768 | 0.402 | 257.764 | 23.537 | False | wobble |
| 6248 | 20210912 | 2021-09-12 23:19:36.515968 | 1208.833 | 0.386 | 262.595 | 27.689 | False | wobble |
| 6249 | 20210912 | 2021-09-12 23:50:33.302675 | 1328.482 | 0.411 | 267.791 | 35.214 | True | wobble |
| 6250 | 20210912 | 2021-09-13 00:05:53.763888 | 328.248 | 0.400 | 270.158 | 38.076 | True | wobble |
| 6251 | 20210912 | 2021-09-13 00:19:51.266180 | 1236.984 | 0.400 | 270.625 | 41.402 | True | wobble |
| 6252 | 20210912 | 2021-09-13 00:41:51.959164 | 1153.771 | 0.393 | 273.459 | 45.724 | True | wobble |
| 6253 | 20210912 | 2021-09-13 00:57:51.387474 | 595.861 | 0.405 | 275.503 | 49.979 | True | wobble |
| 6269 | 20210913 | 2021-09-13 22:58:57.497780 | 1562.563 | 0.385 | 259.350 | 24.064 | False | wobble |
| 6271 | 20210913 | 2021-09-13 23:30:41.016183 | 312.418 | 0.387 | 265.064 | 30.965 | False | wobble |
| 6272 | 20210913 | 2021-09-13 23:49:12.585701 | 28.083 | 0.388 | 267.697 | 35.026 | False | wobble |
| 6273 | 20210913 | 2021-09-14 00:00:57.099488 | 1229.859 | 0.410 | 269.620 | 38.362 | False | wobble |
| 6288 | 20210914 | 2021-09-15 00:04:45.977484 | 1164.339 | 0.400 | 269.760 | 39.817 | False | wobble |
| 6289 | 20210914 | 2021-09-15 00:25:30.855964 | 1163.854 | 0.392 | 272.532 | 43.863 | False | wobble |
| 6290 | 20210914 | 2021-09-15 00:46:18.103774 | 1208.983 | 0.406 | 275.120 | 49.172 | False | wobble |
| 6291 | 20210914 | 2021-09-15 01:08:00.772730 | 1193.965 | 0.402 | 277.627 | 53.399 | False | wobble |
| 8607 | 20220602 | 2022-06-03 02:18:17.116211 | 1168.144 | 0.375 | 100.131 | 24.574 | True | wobble |
| 8608 | 20220602 | 2022-06-03 02:39:12.544475 | 1189.029 | 0.423 | 106.122 | 19.362 | True | wobble |
| 8610 | 20220602 | 2022-06-03 03:12:23.674925 | 1175.487 | 0.399 | 117.749 | 12.744 | True | wobble |
| 8611 | 20220602 | 2022-06-03 03:32:43.771255 | 1134.869 | 0.402 | 137.193 | 9.706 | True | wobble |
| 8612 | 20220602 | 2022-06-03 03:52:58.185166 | 1134.483 | 0.380 | 161.859 | 7.264 | True | wobble |
| 8613 | 20220602 | 2022-06-03 04:12:50.695077 | 1130.355 | 0.418 | 204.330 | 7.555 | True | wobble |
| 8614 | 20220602 | 2022-06-03 04:28:44.929503 | 630.429 | 0.398 | 225.667 | 8.973 | True | wobble |
| 8891 | 20220624 | 2022-06-25 01:38:48.786781 | 1239.415 | 0.402 | 116.787 | 14.563 | True | wobble |
| 8892 | 20220624 | 2022-06-25 02:04:18.557745 | 1173.345 | 0.379 | 131.935 | 9.980 | True | wobble |
| 8893 | 20220624 | 2022-06-25 02:24:22.669043 | 1151.907 | 0.419 | 164.241 | 7.185 | True | wobble |
| 8894 | 20220624 | 2022-06-25 02:44:34.480588 | 1152.283 | 0.398 | 199.396 | 6.903 | True | wobble |
| 8895 | 20220624 | 2022-06-25 03:04:38.363385 | 1154.168 | 0.402 | 224.591 | 9.965 | True | wobble |
| 8896 | 20220624 | 2022-06-25 03:22:02.053649 | 841.338 | 0.383 | 239.084 | 12.399 | True | wobble |
| 9722 | 20221019 | 2022-10-19 20:30:27.600677 | 1794.876 | 0.015 | 257.908 | 22.698 | False | ON |
| 9723 | 20221019 | 2022-10-19 21:00:12.800844 | 1206.477 | 0.012 | 263.753 | 29.174 | False | ON |
| 9724 | 20221019 | 2022-10-19 21:21:36.919730 | 1205.612 | 0.011 | 266.964 | 33.859 | False | ON |
| 9725 | 20221019 | 2022-10-19 21:43:03.569971 | 1206.730 | 0.009 | 269.741 | 38.567 | False | ON |
| 9726 | 20221019 | 2022-10-19 22:04:13.933069 | 1206.449 | 0.008 | 272.208 | 43.217 | False | ON |
| 9727 | 20221019 | 2022-10-19 22:26:16.460377 | 1205.381 | 0.006 | 274.589 | 48.049 | False | ON |
| 9728 | 20221019 | 2022-10-19 22:43:13.303530 | 605.614 | 0.004 | 276.339 | 51.755 | False | ON |
| 9752 | 20221020 | 2022-10-20 21:02:33.395669 | 5316.643 | 0.012 | 264.317 | 30.563 | False | ON |
Data analysis Information
Bad quality runs and runs taken in ON mode were discarded from the analysis. The SGR 1935+2154 analysis covers 25.8 hours of observations over 83 runs and 13 nights. Plots can be found in presentation pdf.
- Runs exclusion criteria (info taken from long-term data check files):
- Source offset not in [0.35,0.45] deg.
- Rate of cosmics < 2500 evt/s
- Pedestal charge standard deviation > 2 P.E.
- Monte Carlo simulations of DL2 and trained RF were requested to lstmcpipe team, NSB tuned. MC prod name: 20230428_src_dec2276_tuned_nsb_az_tel
- lstchain version: 0.9.13
- IRFs were computed point-like and with energy-dependent cuts.
- GH-efficiency: 0.7.
- Theta Containment: 0.68
- Event selector filter: INTENSITY>80 P.E.
- High-level analysis was performed with gammapy v1.0
- Standard Wobble Analysis was performed with 1 off region.
- Flux Points upper limits were obtained for the source under different conditions:
- SED ULs in [0.1, 10] TeV, 5 bins per energy decade.
- 1 set of stacked ULs for total integrated livetime.
- 13 sets of night-wise ULs.
- Light Curve UL run-wise and night-wise, energy integrated in [0.1, 50] TeV
- SED ULs in [0.1, 10] TeV, 5 bins per energy decade.
