NICER observation list: Target ID 764602

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
7646020101 149.641 46.912 170.813 50.901 60356.3632 60356.9532 1314.0 50 7 VALIDATED 60377.2 60550
7646020102 149.638 46.913 170.812 50.900 60357.0093 60357.9801 2654.3 50 7 VALIDATED 60379.0 60551
7646020103 149.640 46.910 170.816 50.901 60370.1722 60370.9563 1567.2 50 2 VALIDATED 60385.6 60564
7646020104 149.639 46.912 170.813 50.900 60371.0056 60371.5895 1011.0 50 3 VALIDATED 60388.5 60565
7646020105 149.640 46.911 170.815 50.901 60372.4329 60372.4407 524.2 50 3 VALIDATED 60388.8 60566
7646020106 149.640 46.911 170.815 50.901 60384.0331 60384.9424 2120.0 41 4 VALIDATED 60396.8 60578
7646020107 149.638 46.911 170.815 50.900 60385.1296 60385.9104 2007.0 41 4 VALIDATED 60397.0 60579
7646020108 149.637 46.911 170.816 50.899 60398.0481 60398.4428 2217.0 50 4 VALIDATED 60410.1 60592
7646020201 149.636 46.908 170.820 50.899 60411.0692 60411.8479 0.0 41 5 VALIDATED 60423.1 60605
7646020202 149.639 46.912 170.814 50.900 60412.0375 60412.8164 0.5 41 4 VALIDATED 60423.2 60606
7646020601 149.639 46.911 170.815 50.900 60426.1866 60426.9757 1692.0 50 2 VALIDATED 60437.8 60620
7646020602 149.638 46.911 170.814 50.900 60427.1641 60427.7396 1543.0 50 3 VALIDATED 60439.7 60621
7646020701 149.640 46.911 170.815 50.901 60440.0472 60440.9738 7113.0 41 5 VALIDATED 60452.0 60634
7646020702 149.640 46.911 170.815 50.901 60441.0245 60441.2917 2407.0 50 4 VALIDATED 60452.1 60635