NICER observation list: Target ID 469301

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
4693010101 211.591 22.397 21.480 72.366 59273.6283 59273.9690 3576.0 52 3 VALIDATED 59278.0 59287
4693010201 211.594 22.398 21.485 72.363 59285.3792 59285.3981 1108.0 52 3 VALIDATED 59293.9 59299
4693010301 211.591 22.396 21.477 72.365 59300.0329 59300.1275 1834.0 52 6 VALIDATED 59322.7 59314
4693010401 211.591 22.396 21.476 72.366 59306.9412 59306.9683 2196.0 52 7 VALIDATED 59318.0 59320
4693010501 211.591 22.394 21.471 72.365 59310.4299 59310.5197 2702.0 52 5 VALIDATED 59319.9 59324
4693010601 211.592 22.397 21.481 72.365 59321.3505 59321.4373 1858.0 52 6 VALIDATED 59332.7 59335
4693010701 211.591 22.396 21.477 72.365 59327.0392 59327.2562 1442.0 52 5 VALIDATED 59336.8 59341
4693010801 211.592 22.396 21.477 72.365 59334.2745 59334.3602 3491.0 52 6 VALIDATED 59343.8 59348
4693010901 211.590 22.397 21.480 72.366 59348.8694 59348.9495 2423.0 52 8 VALIDATED 59360.6 59362
4693011001 211.591 22.397 21.479 72.366 59356.4211 59356.6260 2779.0 52 6 VALIDATED 59368.1 59370
4693011101 211.591 22.395 21.474 72.365 59368.6167 59368.8197 2237.0 52 7 VALIDATED 59378.7 59382
4693011201 211.591 22.396 21.477 72.365 59370.2940 59370.4340 2167.0 52 6 VALIDATED 59379.7 59384
4693011301 211.591 22.396 21.476 72.366 59385.6002 59385.6845 700.0 52 8 VALIDATED 59398.8 59399
4693011401 211.595 22.394 21.474 72.361 59390.0012 59390.9778 1351.0 52 4 VALIDATED 59401.9 59404
4693011501 211.591 22.396 21.476 72.365 59391.8053 59391.9461 898.0 52 6 VALIDATED 59404.9 59405
4693011502 211.593 22.396 21.476 72.364 59392.0072 59392.0704 269.0 52 6 VALIDATED 59404.9 59406
4693011601 211.593 22.397 21.481 72.364 59394.4648 59394.6021 2414.0 52 10 VALIDATED 59415.7 59408
4693011801 211.591 22.397 21.478 72.365 59414.2076 59414.4146 3741.0 52 5 VALIDATED 59423.7 59428
4693011901 211.592 22.397 21.478 72.365 59416.3381 59416.4796 1824.0 52 6 VALIDATED 59425.7 59430
4693012001 211.591 22.399 21.484 72.367 59421.1818 59421.2641 3440.0 52 6 VALIDATED 59430.7 59435
4693012201 211.592 22.397 21.479 72.364 59437.0665 59437.2704 2605.0 52 5 VALIDATED 59467.3 59451
4693012301 211.591 22.396 21.476 72.365 59445.0072 59445.0912 2907.0 49 6 VALIDATED 59471.1 59459
4693012401 211.591 22.396 21.476 72.365 59453.0145 59453.0973 2853.0 49 6 VALIDATED 59464.8 59467
4693012601 211.595 22.396 21.481 72.361 59535.7586 59535.8984 0.0 47 5 VALIDATED 59549.7 59549
4693012701 211.591 22.395 21.472 72.365 59540.5410 59540.6296 2.0 47 6 VALIDATED 59553.7 59554
4693012801 211.591 22.396 21.477 72.365 59542.2845 59542.3572 449.0 47 5 VALIDATED 59551.9 59556
4693012901 211.591 22.396 21.476 72.365 59558.1023 59558.5641 3242.0 49 8 VALIDATED 59568.6 59572
4693013001 211.591 22.398 21.481 72.365 59567.7161 59567.8581 2599.0 52 7 VALIDATED 59577.7 59581
4693013101 211.591 22.396 21.476 72.365 59579.7447 59579.8850 1519.0 52 7 VALIDATED 59589.8 59593
4693013201 211.591 22.396 21.477 72.365 59589.3367 59589.3690 1912.0 52 6 VALIDATED 59600.8 59603
4693013301 211.591 22.395 21.472 72.365 59593.0787 59593.1652 3491.0 52 5 VALIDATED 59604.8 59607
4693013401 211.591 22.396 21.476 72.365 59604.7606 59604.9012 2244.0 52 6 VALIDATED 59614.8 59618
4693013501 211.585 22.394 21.463 72.370 59613.0451 59613.1275 0.0 52 6 VALIDATED 59622.7 59627