NICER observation list: Target ID 469302

Abstract

The soft excess is smooth spectral component that is observed ubiquitously in AGN. Its origin is not clear. Recent modeling suggests that relativistic reflection or Comptonization in warm corona both explain its spectral shape. We propose to monitor two sources PG 1404+226 and TON S180 to track how the soft excess varies relative to the primary power on time scales comparable to the viscous time scale at the inner accretion disk. The two sources have comparable masses, but very different strengths for the soft excess. Obtaining characteristic variability time scale and comparing how observable such the photon index and flux in different bands vary with time, will allow the models to be tested.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
4693020101 14.334 -22.383 139.003 -85.069 59344.5602 59344.9764 0.0 47 7 VALIDATED 59356.6 59358
4693020201 14.334 -22.383 139.004 -85.070 59348.9495 59348.9621 0.0 49 8 VALIDATED 59360.7 59362
4693020202 14.334 -22.383 139.001 -85.069 59349.0143 59349.0922 0.0 49 7 VALIDATED 59360.7 59363
4693020301 14.334 -22.383 139.005 -85.069 59352.0482 59352.1300 0.0 49 4 VALIDATED 59361.7 59366
4693020401 14.334 -22.383 139.004 -85.069 59356.0625 59356.2095 0.0 49 6 VALIDATED 59368.0 59370
4693020501 14.334 -22.383 139.007 -85.070 59367.6234 59367.7697 2009.0 52 7 VALIDATED 59377.6 59381
4693020601 14.335 -22.383 139.014 -85.069 59381.3572 59381.4986 1823.0 52 6 VALIDATED 59390.8 59395
4693020701 14.334 -22.382 139.006 -85.069 59395.6544 59395.7954 838.0 52 5 VALIDATED 59407.8 59409
4693020801 14.334 -22.382 139.006 -85.069 59401.2026 59401.2907 3653.8 52 5 VALIDATED 59411.0 59415
4693020901 14.334 -22.383 139.002 -85.069 59416.3015 59416.3822 1836.0 52 6 VALIDATED 59425.7 59430
4693021001 14.334 -22.383 139.000 -85.070 59425.3544 59425.4368 1256.0 52 7 VALIDATED 59471.9 59439
4693021101 14.334 -22.383 139.007 -85.069 59435.0981 59435.3056 1743.0 52 4 VALIDATED 59467.2 59449
4693021201 14.334 -22.383 139.007 -85.070 59438.0148 59438.2067 1957.0 52 5 VALIDATED 59468.1 59452
4693021301 14.334 -22.382 138.998 -85.069 59452.6076 59452.7509 2743.0 52 6 VALIDATED 59464.8 59466
4693021401 14.334 -22.382 138.996 -85.069 59456.9956 59457.1201 1981.0 52 6 VALIDATED 59466.6 59471
4693021501 14.339 -22.381 139.050 -85.067 59465.7783 59465.9785 1173.0 52 5 VALIDATED 59476.7 59479
4693021502 14.339 -22.381 139.052 -85.067 59466.0368 59466.2366 1144.0 52 4 VALIDATED 59476.7 59480
4693021601 14.337 -22.384 139.035 -85.069 59476.7000 59476.7789 2248.0 52 6 VALIDATED 59486.8 59490
4693021701 14.337 -22.383 139.037 -85.069 59478.6373 59478.7188 2456.0 52 7 VALIDATED 59488.8 59492
4693021801 14.335 -22.382 139.012 -85.069 59483.1593 59483.3030 1421.0 52 6 VALIDATED 59492.7 59497
4693021901 14.334 -22.383 139.000 -85.069 59494.5788 59494.6086 2421.0 52 7 VALIDATED 59504.6 59508
4693022001 14.333 -22.383 138.995 -85.070 59497.1711 59497.1905 646.0 52 5 VALIDATED 59506.6 59511
4693022101 14.335 -22.384 139.014 -85.070 59504.0896 59504.2084 1699.0 52 6 VALIDATED 59513.7 59518
4693022201 14.336 -22.385 139.031 -85.071 59506.0757 59506.1542 2222.0 52 6 VALIDATED 59515.7 59520
4693022301 14.334 -22.383 139.005 -85.069 59514.7986 59514.8757 2332.0 52 5 VALIDATED 59526.7 59528
4693022401 14.334 -22.382 139.002 -85.069 59529.0053 59529.4662 2233.0 52 5 VALIDATED 59538.8 59543
4693022402 14.334 -22.382 139.001 -85.069 59532.2415 59532.3125 962.0 52 3 VALIDATED 59543.1 59546
4693022501 14.334 -22.382 139.000 -85.069 59544.2523 59544.4069 3659.0 52 5 VALIDATED 59553.9 59558
4693022601 14.335 -22.382 139.006 -85.069 59549.2370 59549.4451 1651.0 52 6 VALIDATED 59558.7 59563
4693022701 14.335 -22.382 139.008 -85.069 59554.1424 59554.3519 1103.0 52 6 VALIDATED 59563.7 59568
4693022801 14.334 -22.382 139.005 -85.069 59556.4093 59556.6113 2797.0 52 6 VALIDATED 59566.6 59570
4693022901 14.334 -22.384 139.001 -85.070 59571.1069 59571.2488 2859.0 52 6 VALIDATED 59580.7 59585
4693023001 14.334 -22.383 139.004 -85.069 59579.8204 59579.8486 1215.0 52 7 VALIDATED 59589.8 59593
4693023101 14.334 -22.382 138.998 -85.069 59599.3724 59599.4588 702.0 52 4 VALIDATED 59609.8 59613