NICER observation list: Target ID 866001

Abstract

Irradiation of a standard accretion disk by a compact X-ray source is expected to produce correlated X-ray and UV/Optical variability, delayed by the light crossing time between the emitting regions. However, the observed X-ray/UV lags in NGC 4151 are ~10x longer than expected, suggesting an extended X-ray corona or a second reprocessor between the X-rays and the disk. NGC 4151 is also affected by highly variable obscuration which may distort size estimates of the soft X-ray corona using observed count rates. Our 4.5-month NICER campaign will deliver daily X-ray spectra with sufficient S/N to obtain time-resolved measurements of the intrinsic X-ray fluxes in multiple bands, which will be tested for correlation with coordinated UV/Optical observations to map the X-ray corona and inner disk.
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
8660010101 182.637 39.406 155.075 75.064 60735.2463 60735.2595 930.0 50 3 VALIDATED 60746.7 60749
8660010102 182.637 39.407 155.073 75.063 60736.6743 60736.6889 1081.0 50 3 VALIDATED 60748.0 60750
8660010103 182.637 39.407 155.071 75.063 60737.1877 60737.3245 1383.0 50 3 VALIDATED 60748.0 60751
8660010301 182.635 39.406 155.078 75.063 60747.5104 60747.5147 96.0 50 6 VALIDATED 60758.6 60761
8660010401 182.637 39.406 155.074 75.064 60738.6111 60738.6796 416.0 44 3 VALIDATED 60751.1 60752
8660010402 182.636 39.406 155.076 75.063 60748.8015 60748.8743 834.0 50 5 VALIDATED 60758.7 60762
8660010501 182.637 39.407 155.073 75.063 60739.2537 60739.3250 931.0 50 3 VALIDATED 60751.2 60753
8660010502 182.636 39.406 155.076 75.063 60749.5756 60749.6484 807.0 50 5 VALIDATED 60759.7 60763
8660010601 182.637 39.407 155.071 75.063 60740.6729 60740.8090 1390.0 50 3 VALIDATED 60751.3 60754
8660010602 182.636 39.405 155.079 75.063 60750.4142 60750.5519 816.0 50 6 VALIDATED 60760.5 60764
8660010701 182.635 39.406 155.076 75.062 60741.8361 60741.9706 878.0 50 3 VALIDATED 60752.8 60755
8660010702 182.636 39.405 155.078 75.064 60751.6387 60751.7132 802.0 50 7 VALIDATED 60761.6 60765
8660010801 182.637 39.406 155.075 75.063 60742.6758 60742.9387 1009.0 50 4 VALIDATED 60752.8 60756
8660010802 182.636 39.406 155.077 75.063 60752.6721 60752.7458 834.0 50 7 VALIDATED 60762.6 60766
8660010901 182.637 39.406 155.074 75.063 60743.5158 60743.9065 834.0 50 5 VALIDATED 60753.7 60757
8660010902 182.635 39.404 155.082 75.064 60753.5110 60753.5215 442.0 50 7 VALIDATED 60764.6 60767
8660011001 182.636 39.406 155.077 75.063 60744.4788 60744.8042 819.0 50 5 VALIDATED 60754.6 60758
8660011002 182.635 39.405 155.081 75.064 60753.6400 60753.6431 0.0 50 7 VALIDATED 60764.6 60767
8660011003 182.636 39.405 155.078 75.064 60754.1539 60754.1589 0.0 0 5 VALIDATED 60764.7 60768
8660011101 182.637 39.407 155.071 75.063 60745.6402 60745.7745 813.0 50 5 VALIDATED 60755.7 60759
8660011102 182.636 39.406 155.077 75.063 60755.1232 60755.3219 0.0 50 5 VALIDATED 60766.1 60769
8660011201 182.636 39.406 155.076 75.063 60746.6711 60746.7442 872.0 37 5 VALIDATED 60756.7 60760
8660011202 182.635 39.405 155.083 75.063 60756.0273 60756.1607 0.0 50 5 VALIDATED 60766.2 60770
8660011301 182.637 39.406 155.073 75.063 60747.7693 60747.8424 922.0 50 6 VALIDATED 60758.6 60761
8660011302 182.635 39.404 155.084 75.064 60757.0595 60757.1931 0.0 50 6 VALIDATED 60767.9 60771
8660011401 182.634 39.404 155.086 75.064 60758.0272 60758.1611 0.0 50 5 VALIDATED 60768.0 60772
8660011501 182.634 39.403 155.087 75.065 60759.0595 60759.1905 0.0 50 5 VALIDATED 60769.9 60773
8660011601 182.634 39.404 155.086 75.064 60760.0271 60760.9998 0.0 50 6 VALIDATED 60772.6 60774
8660011701 182.635 39.405 155.082 75.063 60761.0593 60761.1292 15.0 50 4 VALIDATED 60772.7 60775
8660011801 182.634 39.404 155.086 75.064 60762.0269 60762.9984 38.0 50 5 VALIDATED 60774.7 60776
8660011901 182.636 39.406 155.078 75.063 60763.0590 60763.1919 0.0 50 4 VALIDATED 60774.9 60777
8660012001 182.636 39.406 155.078 75.063 60764.6067 60764.6838 519.0 50 4 VALIDATED 60775.0 60778
8660012101 182.636 39.403 155.083 75.065 60765.3262 60765.4653 1535.0 50 5 VALIDATED 60776.8 60779
8660012201 182.635 39.405 155.080 75.063 60766.0255 60766.3514 0.0 50 4 VALIDATED 60776.8 60780
8660012301 182.635 39.406 155.079 75.063 60767.0578 60767.3196 0.0 50 4 VALIDATED 60779.7 60781
8660012401 182.636 39.405 155.079 75.063 60768.0977 60768.1685 968.0 50 4 VALIDATED 60779.7 60782
8660013701 182.636 39.406 155.075 75.063 60781.7292 60781.9944 732.0 50 5 VALIDATED 60791.7 60795
8660013801 182.636 39.406 155.076 75.063 60782.6957 60782.8285 795.0 50 6 VALIDATED 60794.0 60796
8660013901 182.636 39.408 155.070 75.061 60783.5449 60783.8771 1186.0 50 4 VALIDATED 60794.2 60797
8660014001 182.638 39.405 155.072 75.065 60784.1917 60784.7002 769.0 50 4 VALIDATED 60795.9 60798
8660014101 182.636 39.406 155.076 75.063 60785.9196 60785.9324 343.0 50 5 VALIDATED 60797.1 60799
8660014201 182.636 39.406 155.076 75.063 60786.8928 60786.9072 1041.0 50 6 VALIDATED 60797.2 60800
8660014301 182.637 39.406 155.075 75.063 60787.9835 60787.9925 0.0 50 6 VALIDATED 60799.0 60801
8660014401 182.637 39.406 155.075 75.064 60788.8865 60788.9755 750.0 50 6 VALIDATED 60799.1 60802
8660014501 182.640 39.407 155.063 75.064 60789.9292 60789.9435 1139.0 50 5 VALIDATED 60800.8 60803
8660014601 182.636 39.406 155.076 75.063 60790.3905 60790.5062 1057.0 50 4 VALIDATED 60800.9 60804
8660014602 182.635 39.408 155.074 75.061 60791.0405 60791.4963 0.0 50 6 VALIDATED 60802.9 60805
8660014701 182.636 39.407 155.073 75.062 60791.2347 60791.4317 0.0 50 6 VALIDATED 60802.9 60805
8660014801 182.636 39.408 155.073 75.062 60792.1380 60792.9160 430.0 50 4 VALIDATED 60803.0 60806
8660014901 182.637 39.406 155.074 75.063 60793.0410 60793.2387 43.0 50 4 VALIDATED 60803.0 60807
8660015001 182.635 39.407 155.075 75.061 60794.2678 60794.4553 1097.0 50 5 VALIDATED 60804.7 60808
8660015101 182.637 39.405 155.075 75.064 60795.1562 60795.8808 1915.0 50 11 VALIDATED 60818.7 60809
8660015201 182.637 39.405 155.077 75.064 60796.9002 60796.9169 947.0 50 5 VALIDATED 60806.9 60810
8660015301 182.637 39.405 155.075 75.064 60797.8662 60797.8808 1169.0 50 5 VALIDATED 60808.7 60811
8660015401 182.636 39.406 155.077 75.063 60798.1181 60798.8530 2815.0 50 4 VALIDATED 60808.8 60812
8660015501 182.638 39.406 155.073 75.064 60799.8617 60799.8752 1015.0 50 5 VALIDATED 60809.7 60813
8660015601 182.637 39.405 155.076 75.064 60800.0561 60800.8461 2166.0 50 6 VALIDATED 60810.8 60814
8660015701 182.636 39.406 155.077 75.063 60801.0239 60801.8206 1403.0 50 7 VALIDATED 60811.8 60815
8660015801 182.636 39.405 155.077 75.064 60802.3250 60802.9676 1290.0 50 6 VALIDATED 60812.7 60816
8660015901 182.637 39.405 155.075 75.064 60803.0245 60803.9350 470.0 50 6 VALIDATED 60813.7 60817
8660016001 182.637 39.405 155.076 75.064 60804.7670 60804.9028 0.0 50 6 VALIDATED 60814.7 60818
8660016101 182.639 39.404 155.074 75.066 60805.1595 60805.5493 0.0 50 6 VALIDATED 60815.7 60819
8660016201 182.636 39.406 155.076 75.063 60806.0563 60806.5817 0.0 50 7 VALIDATED 60816.8 60820
8660016301 182.637 39.406 155.072 75.063 60807.0928 60807.2917 0.0 50 6 VALIDATED 60816.8 60821
8660017301 182.633 39.406 155.082 75.062 60817.6739 60817.7468 0.0 1 5 VALIDATED 60830.8 60831
8660017901 182.636 39.405 155.077 75.064 60823.6208 60823.8218 876.0 50 4 VALIDATED 60834.8 60837
8660018001 182.636 39.406 155.078 75.063 60824.4600 60824.7273 947.0 50 4 VALIDATED 60836.9 60838
8660018101 182.636 39.406 155.077 75.063 60825.6860 60825.7586 765.0 50 4 VALIDATED 60837.1 60839
8660018201 182.638 39.406 155.072 75.064 60826.2592 60826.8422 0.0 50 4 VALIDATED 60839.0 60840
8660018301 182.635 39.405 155.080 75.063 60827.0299 60827.7454 0.0 50 5 VALIDATED 60839.0 60841
8660018302 182.636 39.406 155.076 75.063 60827.9966 60828.0036 0.0 50 5 VALIDATED 60839.1 60842
8660018401 182.636 39.405 155.079 75.063 60828.1259 60828.9712 0.0 50 4 VALIDATED 60839.3 60842
8660018501 182.637 39.408 155.068 75.062 60829.0269 60829.7454 0.0 50 5 VALIDATED 60840.9 60843
8660018601 182.636 39.405 155.080 75.064 60830.0590 60830.5841 0.0 50 5 VALIDATED 60841.0 60844
8660018701 182.636 39.405 155.079 75.064 60831.0281 60831.6808 0.0 50 5 VALIDATED 60842.9 60845
8660018801 182.635 39.405 155.080 75.063 60832.1895 60832.8424 0.0 50 4 VALIDATED 60843.0 60846
8660018901 182.635 39.405 155.079 75.063 60833.1571 60833.6810 0.0 50 5 VALIDATED 60844.8 60847
8660019001 182.636 39.405 155.079 75.064 60834.1891 60834.7780 0.0 48 4 VALIDATED 60847.0 60848
8660019101 182.635 39.406 155.078 75.063 60835.4793 60835.4975 0.0 50 7 VALIDATED 60856.7 60849
8660019201 182.634 39.405 155.083 75.063 60836.5115 60836.5318 0.0 50 6 VALIDATED 60856.8 60850
8660019301 182.631 39.406 155.087 75.061 60837.4795 60837.4980 0.0 50 6 VALIDATED 60857.0 60851
8660019401 182.635 39.405 155.081 75.063 60838.3819 60838.4561 0.0 49 6 VALIDATED 60860.2 60852
8660019501 182.636 39.406 155.076 75.063 60839.4143 60839.4890 0.0 49 7 VALIDATED 60864.3 60853
8660019601 182.636 39.405 155.079 75.064 60840.3823 60840.4558 0.0 49 7 VALIDATED 60864.4 60854
8660019701 182.636 39.406 155.078 75.063 60841.4152 60841.4306 0.0 49 6 VALIDATED 60864.5 60855
8660019801 182.636 39.407 155.076 75.062 60842.3839 60842.4597 0.0 49 5 VALIDATED 60864.7 60856