NICER observation list: Target ID 262601

Abstract

Colliding wind binaries are unique laboratories to study of the behavior of shocked plasmas. In eccentric binaries, these conditions predictably vary with orbital phase and stellar separation, which allows sensitive tests as shock conditions change. The best example of a colliding wind binary shock laboratory is WR 140, a long-period, highly eccentric massive evolved binary in which wind-wind interactions generate variable emission from the X-ray to radio bands. We propose weekly monitoring of WR 140 with NICER through Cycle 1 to understand the changes in the shock as it recovers from the most recent periastron passage in December 2016 as the stars head toward apastron.
Obsid RA DEC l b Start End Exposure Number of modules Status of Processing Date of Processing Public date
2626010101 305.116 43.854 80.92996 4.17731 58563.9417 58563.9632 1357.00000 52 VALIDATED 58569.0 58577
2626010201 305.117 43.854 80.93038 4.17664 58577.3843 58577.3991 534.00000 52 VALIDATED 58582.7 58591
2626010301 305.118 43.853 80.92959 4.17506 58591.9903 58592.0171 1992.00000 52 VALIDATED 58596.7 58606
2626010501 305.116 43.854 80.93007 4.17722 58622.2692 58622.2850 1112.00000 52 VALIDATED 58626.7 58636
2626010601 305.113 43.853 80.92716 4.17838 58634.1762 58634.1986 1278.00000 52 VALIDATED 58638.6 58648
2626010701 305.126 43.852 80.93243 4.17001 58648.1377 58648.2127 0.00000 52 VALIDATED 58653.8 58662
2626010801 305.118 43.852 80.92855 4.17452 58659.2868 58659.3569 2376.00000 52 VALIDATED 58664.8 58673
2626010802 305.117 43.854 80.92992 4.17633 58662.2396 58662.2683 1777.00000 52 VALIDATED 58666.6 58676
2626010901 305.116 43.855 80.93030 4.17720 58675.7762 58675.8462 1445.00000 52 VALIDATED 58679.7 58689
2626011001 305.115 43.854 80.92927 4.17737 58690.2347 58690.2955 1629.00000 52 VALIDATED 58695.9 58704
2626011101 305.116 43.854 80.92991 4.17737 58702.6042 58702.6183 1182.00000 52 VALIDATED 58706.7 58716
2626011201 305.117 43.855 80.93042 4.17701 58722.2919 58722.3067 949.00000 52 VALIDATED 58730.0 58736
2626011301 305.118 43.853 80.92949 4.17525 58732.4313 58732.5076 722.00000 52 VALIDATED 58736.8 58746
2626011401 305.116 43.854 80.93016 4.17719 58745.8255 58745.8998 1146.00000 52 VALIDATED 58750.7 58759
2626011501 305.116 43.855 80.93011 4.17733 58759.6382 58759.7102 848.00000 52 VALIDATED 58767.7 58773
2626011601 305.110 43.853 80.92680 4.18014 58777.9458 58777.9669 1067.00000 52 VALIDATED 58782.7 58791
2626011701 305.113 43.860 80.93370 4.18222 58785.1738 58785.1889 0.00000 52 VALIDATED 58790.8 58799
2626011801 305.119 43.855 80.93197 4.17589 58799.3298 58799.3450 1067.00000 52 VALIDATED 58803.8 58813
2626011901 305.117 43.854 80.93023 4.17688 58811.0664 58811.0967 2158.00000 52 VALIDATED 58816.9 58825
2626012001 305.116 43.854 80.92993 4.17695 58826.3544 58826.4310 1934.00000 52 VALIDATED 58830.6 58840
2626012101 305.116 43.855 80.93004 4.17772 58842.4149 58842.4447 2380.00000 52 VALIDATED 58847.1 58856
2626012201 305.116 43.854 80.92988 4.17735 58854.0893 58854.1067 509.00000 52 VALIDATED 58859.7 58868
2626012301 305.113 43.854 80.92868 4.17906 58859.5120 58859.7736 1601.00000 52 VALIDATED 58863.7 58873
2626012401 305.117 43.854 80.93026 4.17664 58879.6743 58879.7692 589.00000 52 VALIDATED 58883.7 58893
2626012501 305.117 43.855 80.93031 4.17703 58893.0333 58893.1060 0.00000 52 VALIDATED 58900.7 58907
2626012601 305.117 43.855 80.93084 4.17696 58907.2345 58907.3762 866.00000 52 VALIDATED 58912.2 58921