NICER observation list: Target ID 462801

Abstract

Knowledge of the structure and kinematics of gas around supermassive black holes is vital to understanding accretion and thus AGN feedback. To this end, a multiwavelength reverberation mapping (RM) campaign on Mrk 817 has been built around an already-approved Hubble (HST) Large Program. This is a rare opportunity since it is only the second ~200 orbit HST RM campaign in its 30 year lifetime. Previous RM programs have mapped the accretion disk and broad line region, but revealed that X-ray flux correlates poorly with longer wavelengths. This is a conundrum, since X-rays are thought to drive the multi-wavelength variability. We propose NICER monitoring every other day throughout to track the X-ray spectral changes (rather than just flux changes) and probe the X-ray/UV/optical connection.
Obsid RA DEC l b Start End Exposure Number of modules Status of Processing Date of Processing Public date
4628010101 219.093 58.794 100.29858 53.47834 59274.0192 59274.0417 1788.00000 52 VALIDATED 59278.6 59288
4628010201 219.092 58.794 100.29923 53.47845 59276.0803 59276.0972 1153.00000 52 VALIDATED 59282.0 59290
4628010301 219.092 58.795 100.30038 53.47783 59278.0162 59278.0329 1297.00000 52 VALIDATED 59282.7 59292
4628010401 219.092 58.794 100.29963 53.47842 59280.0351 59280.0495 1156.00000 52 VALIDATED 59284.6 59294
4628010501 219.093 58.794 100.29889 53.47845 59282.0179 59282.0347 1309.00000 52 VALIDATED 59293.7 59296
4628010601 219.092 58.794 100.29983 53.47828 59284.0185 59284.0330 1094.00000 52 VALIDATED 59293.8 59298
4628010701 219.092 58.794 100.29926 53.47859 59286.5356 59286.5503 1097.00000 52 VALIDATED 59293.9 59300
4628010801 219.092 58.794 100.29992 53.47838 59288.4741 59288.5022 2217.00000 52 VALIDATED 59294.1 59302
4628010901 219.092 58.793 100.29808 53.47970 59290.4769 59290.4931 1343.00000 52 VALIDATED 59295.9 59304
4628011001 219.090 58.794 100.29983 53.47938 59292.3466 59292.6144 1700.00000 52 VALIDATED 59296.6 59306
4628011101 219.091 58.794 100.30047 53.47886 59294.2824 59294.3132 1826.00000 52 VALIDATED 59298.6 59308
4628011102 219.091 58.794 100.29994 53.47852 59296.3472 59296.3782 2122.00000 52 VALIDATED 59300.6 59310
4628011301 219.092 58.794 100.29974 53.47834 59298.3472 59298.3782 2293.00000 52 VALIDATED 59302.7 59312
4628011401 219.092 58.794 100.29952 53.47865 59300.2215 59300.2383 1150.00000 52 VALIDATED 59322.7 59314
4628011501 219.091 58.794 100.30045 53.47857 59302.5449 59302.5621 1417.00000 52 VALIDATED 59319.8 59316
4628011601 219.091 58.794 100.30044 53.47873 59304.0935 59304.1113 950.00000 52 VALIDATED 59315.8 59318
4628011701 219.090 58.794 100.30069 53.47911 59306.0937 59306.1125 912.00000 52 VALIDATED 59315.9 59320
4628011901 219.088 58.793 100.30118 53.48019 59309.5130 59309.5204 184.00000 52 VALIDATED 59319.9 59323
4628012101 219.085 58.789 100.29784 53.48480 59314.7988 59314.9343 0.00000 52 VALIDATED 59324.8 59328
4628012201 219.091 58.794 100.30050 53.47845 59316.2178 59316.2945 267.00000 52 VALIDATED 59327.0 59330
4628012301 219.088 58.798 100.30663 53.47651 59318.1514 59318.1653 694.00000 52 VALIDATED 59330.2 59332
4628012401 219.092 58.795 100.30002 53.47800 59320.1472 59320.1667 1105.00000 52 VALIDATED 59331.6 59334
4628012501 219.091 58.793 100.29859 53.47943 59321.8922 59321.9775 41.00000 52 VALIDATED 59332.7 59335
4628012502 219.094 58.794 100.29758 53.47784 59322.0223 59322.1708 304.00000 52 VALIDATED 59332.7 59336
4628012701 219.094 58.795 100.29953 53.47700 59327.1086 59327.1225 817.00000 52 VALIDATED 59336.8 59341
4628012801 219.096 58.795 100.29842 53.47610 59328.3986 59328.4139 591.00000 52 VALIDATED 59337.8 59342
4628012901 219.094 58.795 100.29908 53.47738 59330.0840 59330.0956 891.00000 52 VALIDATED 59340.0 59344
4628013001 219.094 58.794 100.29783 53.47830 59331.9042 59331.9769 765.00000 52 VALIDATED 59341.9 59345
4628013002 219.095 58.793 100.29678 53.47830 59332.0333 59332.1060 678.00000 52 VALIDATED 59341.9 59346
4628013101 219.093 58.793 100.29736 53.47909 59334.2100 59334.2359 1990.00000 52 VALIDATED 59343.8 59348
4628013201 219.097 58.794 100.29623 53.47672 59336.1451 59336.1725 1066.00000 52 VALIDATED 59345.7 59350
4628013301 219.093 58.794 100.29827 53.47847 59338.0884 59338.1093 1613.00000 52 VALIDATED 59347.7 59352
4628013401 219.092 58.794 100.29924 53.47836 59340.0211 59340.0458 1932.00000 52 VALIDATED 59349.7 59354
4628013501 219.092 58.794 100.29943 53.47824 59342.0222 59342.0465 1909.00000 52 VALIDATED 59351.6 59356
4628013601 219.092 58.794 100.29938 53.47851 59344.0236 59344.0429 1489.00000 52 VALIDATED 59354.7 59358
4628013701 219.092 58.794 100.29927 53.47866 59346.0889 59346.1077 1430.00000 52 VALIDATED 59356.7 59360
4628013801 219.092 58.794 100.29942 53.47848 59348.0262 59348.0492 1836.00000 52 VALIDATED 59357.7 59362
4628013901 219.092 58.794 100.29937 53.47875 59350.7434 59350.7600 1147.00000 52 VALIDATED 59360.7 59364
4628014001 219.092 58.794 100.29946 53.47845 59352.2951 59352.3090 1029.00000 52 VALIDATED 59361.7 59366
4628014101 219.092 58.793 100.29810 53.47906 59353.8951 59353.9695 1200.00000 52 VALIDATED 59363.6 59367
4628014201 219.092 58.793 100.29823 53.47952 59356.0227 59356.0995 1673.00000 52 VALIDATED 59368.0 59370
4628014301 219.090 58.792 100.29822 53.48086 59358.2185 59358.2388 1408.00000 52 VALIDATED 59368.2 59372
4628014401 219.090 58.791 100.29784 53.48143 59360.6039 59360.6284 1554.00000 52 VALIDATED 59373.7 59374
4628014501 219.092 58.794 100.29911 53.47876 59362.6065 59362.6297 1876.00000 52 VALIDATED 59372.7 59376
4628014601 219.091 58.794 100.30001 53.47863 59364.0931 59364.1694 1509.00000 52 VALIDATED 59373.8 59378
4628014701 219.091 58.794 100.29988 53.47856 59366.2199 59366.2359 1184.00000 52 VALIDATED 59375.7 59380
4628014801 219.091 58.794 100.30027 53.47853 59368.8674 59368.8840 1055.00000 52 VALIDATED 59378.7 59382
4628014901 219.091 58.794 100.30000 53.47848 59370.8676 59370.8953 2036.00000 52 VALIDATED 59381.8 59384
4628015001 219.091 58.794 100.29990 53.47871 59372.9978 59373.0757 1165.00000 52 VALIDATED 59382.7 59387
4628015101 219.091 58.794 100.29981 53.47869 59374.7396 59374.8118 1316.00000 52 VALIDATED 59384.7 59388
4628015201 219.092 58.794 100.29998 53.47826 59376.8693 59376.9458 857.00000 52 VALIDATED 59386.7 59390
4628015301 219.084 58.796 100.30666 53.47986 59378.9341 59378.9491 431.00000 52 VALIDATED 59388.7 59392
4628015401 219.091 58.794 100.30066 53.47866 59380.9336 59380.9512 430.00000 52 VALIDATED 59390.7 59394
4628015501 219.091 58.794 100.30072 53.47854 59382.9334 59382.9523 811.00000 52 VALIDATED 59393.1 59396
4628015601 219.091 58.795 100.30109 53.47845 59384.8682 59384.8873 590.00000 52 VALIDATED 59394.7 59398
4628015701 219.096 58.797 100.30045 53.47441 59386.8023 59386.8204 0.00000 52 VALIDATED 59397.8 59400
4628015801 219.098 58.790 100.29106 53.47974 59388.8078 59388.8836 0.00000 52 VALIDATED 59398.9 59402
4628015901 219.091 58.798 100.30395 53.47597 59390.2836 59390.3586 236.00000 52 VALIDATED 59401.9 59404
4628016001 219.092 58.795 100.30013 53.47800 59391.7572 59391.7750 798.00000 52 VALIDATED 59404.9 59405
4628016101 219.092 58.795 100.29996 53.47788 59393.8229 59393.8988 1660.00000 52 VALIDATED 59405.0 59407
4628016201 219.092 58.794 100.30022 53.47825 59396.5947 59396.6081 937.00000 52 VALIDATED 59407.9 59410
4628016301 219.093 58.794 100.29920 53.47785 59398.4656 59398.4845 1442.00000 52 VALIDATED 59411.8 59412
4628016401 219.095 58.793 100.29702 53.47814 59400.6694 59400.6880 1042.00000 52 VALIDATED 59410.9 59414
4628016501 219.095 58.794 100.29692 53.47782 59402.6021 59402.6241 1280.00000 52 VALIDATED 59412.8 59416
4628016601 219.093 58.794 100.29877 53.47821 59404.6065 59404.6248 896.00000 52 VALIDATED 59415.8 59418
4628016701 219.094 58.794 100.29819 53.47805 59406.4900 59406.6271 1047.00000 52 VALIDATED 59416.7 59420