NICER observation list: Target ID 258401

Abstract

We propose to observe the next outburst of SAX J1808.4-3658 with NICER for a total exposure of 150 ks. Such an observation campaign will allow us to: 1) extend the pulsar timing baseline for this source to over 2 decades, giving the most precise measure yet of the long term spin and binary orbit evolution in an AMXP; 2) establish, for the first time, the systematic evolution of spectral and temporal variability in the soft emission over the course of an AMXP outburst; 3) achieve a high probability of observing type-I X-ray bursts and their potential interaction with the neutron star environment.
Obsid RA DEC l b Start End Exposure Number of modules Status of Processing Date of Processing Public date
2584010101 272.116 -36.978 355.38654 -8.14903 58703.7191 58703.9880 1695.00000 52 VALIDATED 58707.7 58717
2584010102 272.115 -36.979 355.38522 -8.14819 58704.1068 58704.9553 1926.00000 52 VALIDATED 58708.6 58718
2584010103 272.115 -36.979 355.38532 -8.14813 58705.0103 58705.9701 5485.00000 52 VALIDATED 58709.6 58719
2584010104 272.114 -36.979 355.38475 -8.14798 58706.0266 58706.9542 3992.00000 52 VALIDATED 58710.6 58720
2584010105 272.116 -36.978 355.38620 -8.14921 58706.9887 58707.9671 10628.00000 52 VALIDATED 58711.8 58721
2584010106 272.116 -36.978 355.38610 -8.14872 58708.0199 58708.9984 12400.00000 52 VALIDATED 58715.6 58722
2584010107 272.116 -36.979 355.38559 -8.14890 58709.1148 58709.9653 11582.34547 52 VALIDATED 58715.6 58723
2584010108 272.115 -36.979 355.38545 -8.14860 58710.0183 58710.9970 11194.46965 52 VALIDATED 58715.7 58724
2584010109 272.115 -36.979 355.38539 -8.14864 58711.0497 58711.9644 11630.00000 52 VALIDATED 58715.8 58725
2584010110 272.115 -36.979 355.38534 -8.14857 58712.0171 58712.9965 13796.00000 52 VALIDATED 58715.8 58726
2584010111 272.115 -36.979 355.38496 -8.14886 58729.8845 58729.9695 620.00000 52 VALIDATED 58736.0 58743
2584010112 272.117 -36.981 355.38436 -8.15090 58730.0778 58730.5348 1271.00000 52 VALIDATED 58736.1 58744
2584010201 272.115 -36.979 355.38536 -8.14838 58713.0007 58713.9641 13281.00000 52 VALIDATED 58716.5 58727
2584010301 272.115 -36.979 355.38519 -8.14838 58714.0164 58714.9963 17552.00000 52 VALIDATED 58992.0 58728
2584010401 272.115 -36.979 355.38526 -8.14835 58715.0041 58715.9815 16916.00000 52 VALIDATED 58721.6 58729
2584010501 272.115 -36.979 355.38535 -8.14839 58716.0212 58716.9491 17618.00000 52 VALIDATED 58721.7 58730
2584010502 272.115 -36.979 355.38531 -8.14850 58716.9898 58717.0134 1029.00000 52 VALIDATED 58721.8 58731
2584010601 272.115 -36.979 355.38521 -8.14819 58717.0542 58717.9599 17169.00000 52 VALIDATED 58721.8 58731
2584010701 272.115 -36.978 355.38579 -8.14825 58718.0152 58718.9493 10351.00000 52 VALIDATED 58722.6 58732
2584010801 272.115 -36.979 355.38506 -8.14854 58718.9997 58719.9713 8753.00000 52 VALIDATED 58723.6 58733
2584010901 272.115 -36.979 355.38468 -8.14847 58720.0311 58720.9488 5465.00000 52 VALIDATED 58724.6 58734
2584011001 272.115 -36.979 355.38496 -8.14841 58721.0623 58721.9810 5850.00000 52 VALIDATED 58729.9 58735
2584011101 272.115 -36.979 355.38478 -8.14859 58722.0303 58722.9421 14500.00000 52 VALIDATED 58729.9 58736
2584011102 272.115 -36.979 355.38512 -8.14851 58722.9823 58723.0046 1265.00000 52 VALIDATED 58730.0 58737
2584011201 272.115 -36.979 355.38501 -8.14829 58723.0459 58723.3808 3494.00000 52 VALIDATED 58730.0 58737
2584011301 272.115 -36.979 355.38518 -8.14848 58724.2153 58724.4780 2298.00000 52 VALIDATED 58730.1 58738
2584011401 272.115 -36.980 355.38439 -8.14916 58725.0461 58725.5794 3952.00000 52 VALIDATED 58732.8 58739
2584011501 272.115 -36.979 355.38512 -8.14851 58726.2718 58726.6208 1542.00000 52 VALIDATED 58732.9 58740
2584011502 272.117 -36.982 355.38330 -8.15109 58726.9806 58727.0012 840.00000 52 VALIDATED 58735.8 58741
2584011601 272.118 -36.982 355.38357 -8.15167 58727.3030 58727.9611 1109.00000 52 VALIDATED 58735.9 58741
2584011701 272.115 -36.979 355.38511 -8.14842 58728.0776 58728.6887 4309.00000 52 VALIDATED 58735.9 58742
2584011702 272.115 -36.979 355.38514 -8.14841 58728.9803 58729.0111 1286.00000 52 VALIDATED 58736.0 58743
2584011801 272.118 -36.982 355.38368 -8.15189 58729.2387 58729.4468 436.00000 52 VALIDATED 58736.0 58743
2584011901 272.118 -36.982 355.38352 -8.15197 58730.5986 58730.8724 2169.00000 52 VALIDATED 58736.1 58744
2584011902 272.115 -36.979 355.38505 -8.14890 58730.9953 58731.0014 0.00000 52 VALIDATED 58736.6 58745
2584012001 272.115 -36.979 355.38479 -8.14886 58731.0479 58731.8421 5253.00000 52 VALIDATED 58736.7 58745
2584012101 272.117 -36.980 355.38486 -8.15009 58732.0281 58732.9919 4436.00000 52 VALIDATED 58736.7 58746
2584012102 272.115 -36.979 355.38457 -8.14843 58732.9950 58733.0051 179.00000 52 VALIDATED 58737.7 58747
2584012201 272.115 -36.979 355.38515 -8.14858 58733.0448 58733.8944 2898.00000 52 VALIDATED 58737.7 58747
2584012301 272.115 -36.979 355.38511 -8.14878 58734.0918 58734.9907 2579.00000 52 VALIDATED 58738.6 58748
2584012401 272.115 -36.979 355.38514 -8.14886 58735.0586 58735.4491 764.00000 52 VALIDATED 58739.6 58749
2584012501 272.114 -36.978 355.38549 -8.14732 58740.9111 58740.9810 606.00000 52 VALIDATED 58745.7 58754
2584012601 272.114 -36.978 355.38573 -8.14719 58741.1043 58741.9525 1104.00000 52 VALIDATED 58746.7 58755
2584012701 272.114 -36.978 355.38545 -8.14716 58742.0097 58742.9875 3289.00000 52 VALIDATED 58746.8 58756
2584012801 272.115 -36.978 355.38567 -8.14777 58743.0417 58743.7000 4467.00000 52 VALIDATED 58748.2 58757
2584012901 272.114 -36.978 355.38539 -8.14755 58744.1358 58744.9882 2675.00000 52 VALIDATED 58749.6 58758
2584013001 272.114 -36.978 355.38544 -8.14698 58745.2970 58745.9618 3814.00000 52 VALIDATED 58750.7 58759
2584013101 272.112 -36.977 355.38575 -8.14510 58746.2004 58746.9818 1704.00000 52 VALIDATED 58750.7 58760
2584013201 272.115 -36.979 355.38533 -8.14795 58747.0386 58747.2440 2722.00000 52 VALIDATED 58992.0 58761
2584013301 272.114 -36.978 355.38601 -8.14713 58748.5220 58748.9933 7124.00000 52 VALIDATED 58752.9 58762
2584013401 272.113 -36.977 355.38605 -8.14585 58749.0385 58749.9454 7811.00000 52 VALIDATED 58753.6 58763
2584013501 272.113 -36.977 355.38577 -8.14609 58750.2643 58750.9177 1811.00000 52 VALIDATED 58754.6 58764
2584013601 272.113 -36.977 355.38611 -8.14627 58751.1027 58751.3052 1531.00000 52 VALIDATED 58756.8 58765
2584013701 272.115 -36.978 355.38566 -8.14804 58752.0125 58752.9891 4544.00000 52 VALIDATED 58756.8 58766
2584013801 272.113 -36.976 355.38705 -8.14532 58753.1029 58753.8857 5347.00000 52 VALIDATED 58760.7 58767
2584013901 272.114 -36.977 355.38616 -8.14724 58754.1999 58754.7892 696.00000 52 VALIDATED 58763.7 58768
2584014001 272.117 -36.982 355.38325 -8.15103 58765.1942 58765.4012 2396.00000 52 VALIDATED 58770.9 58779
2584014002 272.117 -36.977 355.38730 -8.14908 58778.5404 58778.8736 0.00000 52 VALIDATED 58782.7 58792
2584014101 272.118 -36.982 355.38371 -8.15151 58766.0323 58766.1757 2456.00000 52 VALIDATED 58771.0 58780
2584014102 272.116 -36.978 355.38621 -8.14911 58779.3777 58779.7778 0.00000 52 VALIDATED 58783.6 58793
2584014201 272.118 -36.980 355.38516 -8.15084 58768.0958 58768.9400 6040.00000 52 VALIDATED 58778.8 58782
2584014202 272.116 -36.979 355.38574 -8.14872 58780.4099 58780.6803 0.00000 52 VALIDATED 58784.7 58794
2584014301 272.119 -36.981 355.38482 -8.15220 58768.9991 58769.4637 3071.00000 52 VALIDATED 58992.1 58783
2584014302 272.115 -36.979 355.38534 -8.14867 58781.3129 58781.9056 0.00000 52 VALIDATED 58786.7 58795
2584014401 272.116 -36.979 355.38541 -8.14881 58782.0224 58782.4215 0.00000 52 VALIDATED 58786.8 58796
2584014501 272.115 -36.979 355.38545 -8.14843 58784.5372 58784.8079 0.00000 50 VALIDATED 58789.8 58798
2584014601 272.115 -36.979 355.38512 -8.14842 58786.2790 58786.4854 0.00000 50 VALIDATED 58790.9 58800
2584014701 272.115 -36.979 355.38519 -8.14820 58788.8102 58788.9542 263.00000 50 VALIDATED 58793.7 58802
2584014801 272.115 -36.979 355.38521 -8.14837 58789.0058 58789.0188 0.00000 50 VALIDATED 58795.1 58803
2584014901 272.115 -36.979 355.38529 -8.14833 58790.3417 58790.4377 874.00000 50 VALIDATED 58795.3 58804
2584014902 272.115 -36.979 355.38537 -8.14837 58792.5350 58792.6310 849.00000 50 VALIDATED 58797.0 58806
2584015001 272.115 -36.979 355.38519 -8.14838 58793.5025 58793.5343 434.00000 49 VALIDATED 58800.0 58807
2584015101 272.115 -36.979 355.38522 -8.14855 58795.1800 58795.2032 0.00000 49 VALIDATED 58801.1 58809