NICER observation list: Target ID 357301
- Proposal Number = 3573
- Target ID = 357301
- Target Name = ASASSN-20hx
- Proposal Title = MONITORING OF A NEWLY DISCOVERED X-RAY BRIGHT TIDAL DISRUPTION EVENT USING NICER
- PI = KATIE AUCHETTL
- Proposal Category = STARS/CATACLYSMIC VARIABLES/OTHER GALACTIC SOURCES
- Cycle number = 3
- Observation Type = NOR
Abstract
While compact objects undergoing regular, long-term accretion (such as normal AGN) are common, extreme transient accretion events associated with the tidal disruption of a star provide a novel way to probe both the physics of accretion and black holes. These tidal disruption events (TDEs) emit across the electromagnetic spectrum, with a significant part of this emission falling in the X-ray energy band. Here, we propose to perform multi-epoch NICER observations of a nearby, X-ray bright TDE as discovered or detected by the All-Sky Automated Survey for Supernovae (ASAS-SN). Complemented by ground based and space-based UV/optical observations, these observations will allow us to fully characterise the nature of the X-ray emission as it evolves.
| Obsid |
RA |
DEC |
l |
b |
Start |
End |
Exposure |
Number of modules |
Status of Processing |
Date of Processing |
Public date |
| 3573010101 |
255.903 |
62.025 |
91.68213 |
36.29589 |
59055.1387 |
59055.2184 |
1661.00000 |
52 |
VALIDATED |
59155.9 |
59069 |
| 3573010201 |
255.902 |
62.025 |
91.68224 |
36.29592 |
59057.0743 |
59057.1556 |
2336.00000 |
52 |
VALIDATED |
59155.9 |
59071 |
| 3573010301 |
255.902 |
62.025 |
91.68162 |
36.29635 |
59059.1405 |
59059.2146 |
2069.00000 |
52 |
VALIDATED |
59155.9 |
59073 |
| 3573010401 |
255.902 |
62.025 |
91.68209 |
36.29609 |
59061.1396 |
59061.2220 |
2698.00000 |
52 |
VALIDATED |
59155.9 |
59075 |
| 3573010501 |
255.902 |
62.026 |
91.68239 |
36.29619 |
59063.1401 |
59063.1720 |
2335.00000 |
52 |
VALIDATED |
59155.9 |
59077 |
| 3573010601 |
255.901 |
62.024 |
91.68106 |
36.29671 |
59065.0762 |
59065.1588 |
1915.13770 |
52 |
VALIDATED |
59155.9 |
59079 |
| 3573010701 |
255.901 |
62.026 |
91.68242 |
36.29642 |
59068.9489 |
59068.9674 |
1168.00000 |
51 |
VALIDATED |
59155.9 |
59082 |
| 3573010801 |
255.901 |
62.025 |
91.68229 |
36.29644 |
59070.9492 |
59070.9683 |
1377.00000 |
51 |
VALIDATED |
59155.9 |
59084 |
| 3573010901 |
255.901 |
62.025 |
91.68232 |
36.29644 |
59074.0458 |
59074.0648 |
1487.00000 |
51 |
VALIDATED |
59155.9 |
59088 |
| 3573011001 |
255.901 |
62.025 |
91.68212 |
36.29661 |
59076.4324 |
59076.4502 |
1376.00000 |
51 |
VALIDATED |
59155.9 |
59090 |
| 3573011101 |
255.901 |
62.026 |
91.68290 |
36.29659 |
59079.0138 |
59079.0403 |
2149.00000 |
51 |
VALIDATED |
59155.9 |
59093 |
| 3573011201 |
255.901 |
62.027 |
91.68435 |
36.29633 |
59081.0134 |
59081.0396 |
2092.00000 |
51 |
VALIDATED |
59155.9 |
59095 |
| 3573011301 |
255.902 |
62.026 |
91.68358 |
36.29606 |
59084.1079 |
59084.1330 |
1752.00000 |
51 |
VALIDATED |
59155.9 |
59098 |
| 3573011401 |
255.903 |
62.026 |
91.68317 |
36.29569 |
59086.0459 |
59086.0669 |
372.00000 |
51 |
VALIDATED |
59155.9 |
59100 |
| 3573011501 |
255.904 |
62.023 |
91.67926 |
36.29578 |
59087.9896 |
59088.0660 |
0.00000 |
51 |
VALIDATED |
59155.9 |
59102 |
| 3573011701 |
255.902 |
62.026 |
91.68317 |
36.29612 |
59095.1275 |
59095.2037 |
1413.00000 |
52 |
VALIDATED |
59155.9 |
59109 |
| 3573011801 |
255.903 |
62.026 |
91.68287 |
36.29578 |
59097.3833 |
59097.4076 |
1295.00000 |
51 |
VALIDATED |
59155.9 |
59111 |
| 3573011901 |
255.904 |
62.025 |
91.68204 |
36.29528 |
59099.4532 |
59099.4762 |
1254.00000 |
51 |
VALIDATED |
59155.9 |
59113 |
| 3573012001 |
255.909 |
62.028 |
91.68408 |
36.29261 |
59101.4498 |
59101.4755 |
1604.00000 |
51 |
VALIDATED |
59155.9 |
59115 |
| 3573012101 |
255.903 |
62.026 |
91.68248 |
36.29574 |
59104.3572 |
59104.3785 |
1508.00000 |
51 |
VALIDATED |
59155.9 |
59118 |
| 3573012201 |
255.903 |
62.025 |
91.68209 |
36.29585 |
59106.7456 |
59106.7669 |
1660.00000 |
51 |
VALIDATED |
59155.9 |
59120 |
| 3573012301 |
255.907 |
62.026 |
91.68303 |
36.29357 |
59109.0604 |
59109.0889 |
2228.00000 |
51 |
VALIDATED |
59155.9 |
59123 |
| 3573012401 |
255.903 |
62.025 |
91.68221 |
36.29583 |
59111.9090 |
59111.9306 |
1653.00000 |
51 |
VALIDATED |
59155.9 |
59125 |
| 3573012501 |
255.902 |
62.025 |
91.68225 |
36.29592 |
59113.9013 |
59113.9322 |
2511.00000 |
51 |
VALIDATED |
59155.9 |
59127 |
| 3573012601 |
255.903 |
62.026 |
91.68243 |
36.29580 |
59116.3536 |
59116.3798 |
1981.00000 |
51 |
VALIDATED |
59156.0 |
59130 |
| 3573012701 |
255.904 |
62.025 |
91.68201 |
36.29505 |
59119.0007 |
59119.2083 |
2185.00000 |
51 |
VALIDATED |
59156.0 |
59133 |
| 3573012801 |
255.902 |
62.025 |
91.68212 |
36.29594 |
59121.1947 |
59121.2219 |
2077.00000 |
51 |
VALIDATED |
59156.0 |
59135 |
| 3573012901 |
255.902 |
62.025 |
91.68225 |
36.29597 |
59124.0347 |
59124.0556 |
1278.00000 |
51 |
VALIDATED |
59156.0 |
59138 |
| 3573013001 |
255.902 |
62.025 |
91.68225 |
36.29606 |
59126.3590 |
59126.3794 |
1620.00000 |
51 |
VALIDATED |
59156.0 |
59140 |
| 3573013101 |
255.902 |
62.025 |
91.68222 |
36.29612 |
59128.7475 |
59128.7763 |
2358.00000 |
51 |
VALIDATED |
59156.0 |
59142 |
| 3573013201 |
255.902 |
62.025 |
91.68205 |
36.29609 |
59131.0062 |
59131.4141 |
3413.00000 |
51 |
VALIDATED |
59156.0 |
59145 |
| 3573013301 |
255.901 |
62.024 |
91.68104 |
36.29676 |
59134.4269 |
59134.4490 |
1840.00000 |
51 |
VALIDATED |
59156.0 |
59148 |
| 3573013401 |
255.901 |
62.024 |
91.68084 |
36.29693 |
59136.1692 |
59136.1936 |
2035.00000 |
51 |
VALIDATED |
59156.0 |
59150 |
| 3573013501 |
255.902 |
62.025 |
91.68225 |
36.29625 |
59138.0403 |
59138.0692 |
2428.00000 |
51 |
VALIDATED |
59156.0 |
59152 |
| 3573013502 |
255.900 |
62.024 |
91.68026 |
36.29740 |
59139.0081 |
59139.0259 |
1465.00000 |
51 |
VALIDATED |
59156.0 |
59153 |
| 3573013601 |
255.901 |
62.026 |
91.68252 |
36.29636 |
59141.3293 |
59141.3583 |
2280.00000 |
51 |
VALIDATED |
59156.0 |
59155 |
| 3573013701 |
255.901 |
62.026 |
91.68248 |
36.29641 |
59144.0404 |
59144.0676 |
2250.00000 |
51 |
VALIDATED |
59156.0 |
59158 |
| 3573013801 |
255.901 |
62.026 |
91.68259 |
36.29635 |
59146.0391 |
59146.0671 |
2194.00000 |
51 |
VALIDATED |
59156.0 |
59160 |
| 3573013901 |
255.901 |
62.026 |
91.68274 |
36.29642 |
59148.0373 |
59148.0558 |
1462.00000 |
51 |
VALIDATED |
59156.0 |
59162 |
| 3573014001 |
255.901 |
62.026 |
91.68258 |
36.29659 |
59151.2095 |
59151.2914 |
2051.00000 |
51 |
VALIDATED |
59156.1 |
59165 |
| 3573014101 |
255.896 |
62.026 |
91.68392 |
36.29863 |
59153.9731 |
59153.9882 |
632.00000 |
51 |
VALIDATED |
59159.7 |
59167 |
| 3573014102 |
255.894 |
62.026 |
91.68365 |
36.29977 |
59154.0380 |
59154.0461 |
598.00000 |
51 |
VALIDATED |
59159.7 |
59168 |