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
Number of
Processing
Status of
Processing
Date of
Processing
Public
date
2626010101 305.116 43.854 80.930 4.177 58563.9417 58563.9632 1357.0 52 2 VALIDATED 58569.0 58577
2626010201 305.117 43.854 80.930 4.177 58577.3843 58577.3991 534.0 52 3 VALIDATED 58582.7 58591
2626010301 305.118 43.853 80.930 4.175 58591.9903 58592.0171 1992.0 52 2 VALIDATED 58596.7 58606
2626010501 305.116 43.854 80.930 4.177 58622.2692 58622.2850 1112.0 52 3 VALIDATED 58626.7 58636
2626010601 305.113 43.853 80.927 4.178 58634.1762 58634.1986 1278.0 52 3 VALIDATED 58638.6 58648
2626010701 305.126 43.852 80.932 4.170 58648.1377 58648.2127 0.0 52 2 VALIDATED 58653.8 58662
2626010801 305.118 43.852 80.929 4.175 58659.2868 58659.3569 2376.0 52 2 VALIDATED 58664.8 58673
2626010802 305.117 43.854 80.930 4.176 58662.2396 58662.2683 1777.0 52 3 VALIDATED 58666.6 58676
2626010901 305.116 43.855 80.930 4.177 58675.7762 58675.8462 1445.0 52 2 VALIDATED 58679.7 58689
2626011001 305.115 43.854 80.929 4.177 58690.2347 58690.2955 1629.0 52 2 VALIDATED 58695.9 58704
2626011101 305.116 43.854 80.930 4.177 58702.6042 58702.6183 1182.0 52 3 VALIDATED 58706.7 58716
2626011201 305.117 43.855 80.930 4.177 58722.2919 58722.3067 949.0 52 2 VALIDATED 58730.0 58736
2626011301 305.118 43.853 80.929 4.175 58732.4313 58732.5076 722.0 52 2 VALIDATED 58736.8 58746
2626011401 305.116 43.854 80.930 4.177 58745.8255 58745.8998 1146.0 52 3 VALIDATED 58750.7 58759
2626011501 305.116 43.855 80.930 4.177 58759.6382 58759.7102 848.0 52 3 VALIDATED 58767.7 58773
2626011601 305.110 43.853 80.927 4.180 58777.9458 58777.9669 1067.0 52 3 VALIDATED 58782.7 58791
2626011701 305.113 43.860 80.934 4.182 58785.1738 58785.1889 0.0 52 3 VALIDATED 58790.8 58799