NICER observation list: Target ID 764601

Abstract

The canonical picture of Tidal Disruption Events (TDEs) suggests that the soft X-ray emission should rise sharply then decline smoothly over months, but in recent years, NICER and Swift high-cadence monitoring has revealed that the X-rays frequently do not follow this simple prescription. Furthering our understanding requires more complete late-time coverage to search for rebrightening, measure spectral evolution, and characterize any short-term variability. Based on a systematic X-ray archival analysis, we have identified 6 targets well suited for late-time follow-up. We propose to obtain NICER late-time follow-up of these TDEs, in order to test how they compare to evolution predicted by models of viewing-angle unification and slim disk evolution.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
7646010101 284.772 47.518 77.575 18.434 60369.0162 60369.7947 1372.1 50 2 VALIDATED 60385.3 60563
7646010102 284.772 47.518 77.575 18.434 60370.1771 60370.9500 1620.0 50 2 VALIDATED 60385.6 60564
7646010103 284.773 47.518 77.575 18.434 60371.0113 60371.5974 1829.0 50 3 VALIDATED 60388.5 60565
7646010104 284.772 47.518 77.576 18.435 60387.0275 60387.9868 2836.5 50 4 VALIDATED 60398.7 60581
7646010105 284.769 47.518 77.574 18.436 60388.1118 60388.4366 1026.0 50 3 VALIDATED 60398.9 60582
7646010201 284.775 47.518 77.577 18.433 60409.2348 60409.7551 568.5 50 4 VALIDATED 60421.2 60603
7646010202 284.773 47.518 77.576 18.434 60410.0084 60410.7882 1279.0 50 4 VALIDATED 60421.3 60604
7646010203 284.773 47.518 77.576 18.434 60411.0406 60411.0465 431.0 50 4 VALIDATED 60421.5 60605
7646010301 284.775 47.518 77.576 18.433 60419.1035 60419.8831 1689.0 50 4 VALIDATED 60432.5 60613
7646010302 284.774 47.518 77.576 18.434 60420.1403 60420.8562 1749.0 50 4 VALIDATED 60432.6 60614
7646010303 284.774 47.518 77.576 18.434 60421.0458 60421.0491 235.0 50 3 VALIDATED 60432.8 60615
7646010401 284.774 47.516 77.574 18.432 60438.4532 60438.9734 2834.7 50 5 VALIDATED 60449.9 60632
7646010402 284.773 47.518 77.575 18.434 60439.0258 60439.3600 3119.2 41 4 VALIDATED 60450.0 60633
7646010501 284.770 47.514 77.571 18.435 60458.4417 60458.9563 1756.0 50 2 VALIDATED 60474.1 60652
7646010502 284.771 47.514 77.572 18.434 60459.0167 60459.2803 1492.0 50 2 VALIDATED 60474.3 60653
7646010601 284.774 47.518 77.576 18.434 60478.8428 60478.9766 954.0 52 2 VALIDATED 60489.4 60672
7646010602 284.776 47.520 77.578 18.433 60479.0354 60479.7451 3761.5 52 3 VALIDATED 60491.8 60673
7646010801 284.773 47.518 77.576 18.434 60496.1391 60496.9667 3877.0 41 5 VALIDATED 60508.0 60690
7646010901 284.776 47.516 77.575 18.432 60523.3664 60523.8884 1468.0 50 4 VALIDATED 60540.0 60717
7646010902 284.776 47.516 77.575 18.432 60524.0123 60524.4044 571.0 50 4 VALIDATED 60540.1 60718
7646011001 284.773 47.520 77.578 18.435 60545.1278 60545.8463 4436.0 52 4 VALIDATED 60559.1 60739