NICER observation list: Target ID 859401

Abstract

We propose to observe the Gamma-ray binary LS 5039 with NICER and TESS during TESS Sector 91-92 timeframe. Consisting of a massive O6.5 V(f) star and a compact object of unknown type orbiting their center of mass, LS 5039 shows repeatable variations on timescales of years, that may be linked to the stochastic wind of the O6.5 V(f) star. Our goal is to discriminate between the synchrotron or inverse-Compton losses driving the cycle-to-cycle changes in the IBS using a discrete cross-correlation analysis. Thanks to NICER's large effective area, excellent timing resolution and agile schedule as well as TESS's two
Obsid RA DEC l b Start End Exposure Number of
Modules		 Number of
Processing		 Status of
Processing		 Date of
Processing		 Public
date
8594010101 276.563 -14.849 16.882 -1.290 60774.1856 60774.7042 4103.0 50 6 VALIDATED 60789.6 60788
8594010102 276.563 -14.848 16.882 -1.289 60776.0477 60776.0616 357.0 50 4 VALIDATED 60788.2 60790
8594010201 276.563 -14.848 16.882 -1.289 60776.1768 60776.7069 3143.0 50 4 VALIDATED 60788.2 60790
8594010301 276.562 -14.847 16.883 -1.288 60778.0493 60778.5891 2256.0 50 4 VALIDATED 60788.4 60792
8594010401 276.562 -14.846 16.883 -1.288 60779.9874 60779.9922 151.0 50 4 VALIDATED 60789.7 60793
8594010402 276.562 -14.848 16.882 -1.289 60780.0520 60780.9773 1039.0 50 4 VALIDATED 60790.6 60794
8594010501 276.562 -14.847 16.883 -1.288 60781.9979 60782.9634 4116.0 50 6 VALIDATED 60794.0 60796
8594010601 276.562 -14.848 16.882 -1.289 60784.2484 60784.9650 3958.0 50 4 VALIDATED 60795.9 60798
8594010701 276.563 -14.844 16.885 -1.288 60786.1854 60786.5245 4821.0 50 6 VALIDATED 60797.2 60800
8594010801 276.564 -14.845 16.885 -1.288 60788.6367 60788.9644 5275.0 50 6 VALIDATED 60799.1 60802
8594010901 276.563 -14.848 16.882 -1.289 60790.1206 60790.5192 5265.0 50 4 VALIDATED 60800.9 60804
8594011001 276.564 -14.845 16.885 -1.289 60792.1211 60792.9003 5508.0 50 5 VALIDATED 60803.0 60806
8594011701 276.565 -14.849 16.882 -1.291 60806.5254 60806.9914 3590.0 50 7 VALIDATED 60816.8 60820
8594011702 276.563 -14.848 16.882 -1.290 60807.1150 60807.1835 962.0 50 6 VALIDATED 60816.8 60821
8594011801 276.564 -14.847 16.884 -1.290 60807.8940 60807.9648 0.0 50 7 VALIDATED 60817.8 60821
8594011802 276.564 -14.848 16.882 -1.290 60808.0238 60808.8727 703.0 50 7 VALIDATED 60818.8 60822
8594011803 276.564 -14.848 16.882 -1.290 60808.9991 60809.2607 0.0 50 7 VALIDATED 60818.9 60823
8594011804 276.563 -14.847 16.883 -1.289 60810.4167 60810.9403 335.0 50 7 VALIDATED 60821.7 60824
8594011805 276.568 -14.850 16.882 -1.294 60810.9927 60811.3229 204.0 50 7 VALIDATED 60821.8 60825
8594011901 276.564 -14.848 16.883 -1.290 60810.2227 60810.6176 327.0 50 7 VALIDATED 60821.7 60824
8594012001 276.563 -14.848 16.882 -1.289 60812.0788 60812.9252 5418.0 50 6 VALIDATED 60822.7 60826
8594012101 276.562 -14.849 16.881 -1.289 60814.2083 60814.9255 3918.0 50 7 VALIDATED 60824.9 60828
8594012102 276.562 -14.849 16.881 -1.289 60815.1107 60815.2484 1143.0 50 6 VALIDATED 60824.9 60829
8594012201 276.562 -14.849 16.881 -1.289 60816.2040 60816.5983 4412.0 50 7 VALIDATED 60830.7 60830
8594012301 276.563 -14.849 16.881 -1.290 60818.2040 60818.4183 4533.0 50 4 VALIDATED 60830.8 60832
8594012401 276.563 -14.849 16.881 -1.289 60820.0757 60820.4255 6228.0 50 5 VALIDATED 60831.0 60834
8594012501 276.562 -14.849 16.881 -1.289 60821.9468 60821.9741 2004.0 50 5 VALIDATED 60832.9 60835
8594012502 276.563 -14.849 16.881 -1.289 60822.0125 60822.2101 2086.0 50 4 VALIDATED 60832.9 60836
8594012601 276.563 -14.850 16.880 -1.290 60824.0764 60824.4069 4077.0 50 4 VALIDATED 60836.9 60838
8594012701 276.563 -14.849 16.881 -1.289 60826.3345 60826.9874 5261.0 50 4 VALIDATED 60839.0 60840
8594012702 276.563 -14.849 16.881 -1.289 60827.0449 60827.2630 1114.0 50 5 VALIDATED 60839.0 60841
8594012801 276.563 -14.849 16.881 -1.289 60828.5965 60828.7470 4845.0 50 4 VALIDATED 60839.3 60842