NICER observation list: Target ID 261701

Abstract

High mass X-ray binaries (HMXBs) consist of an early type star (companion) in orbit with a compact X-ray source. Their properties are largely determined by the interaction between the strong stellar wind from the companion and the gravity and radiation from the compact object. The compact object gravity focusses the wind and accretes. X-rays from the compact object heat and ionize the wind. In the case where the wind is strong and the X-rays are weak, then the X-ray heating effects are minimal, and the X-rays from the compact object serve as a passive probe of the structure of the wind. We propose to use Nicer to observe 4U1700-37, the HMXB with the most extreme known ratio of wind strength to X-ray luminosity.
Obsid RA DEC l b Start End Exposure Number of
Modules
Number of
Processing
Status of
Processing
Date of
Processing
Public
date
2617010101 255.987 -37.844 347.755 2.173 58699.7194 58699.7329 1035.0 52 3 VALIDATED 58704.7 58713
2617010102 255.990 -37.846 347.755 2.170 58700.0412 58700.4917 8243.0 52 2 VALIDATED 58704.8 58714
2617010103 255.991 -37.846 347.755 2.170 58702.0889 58702.6835 5383.0 52 3 VALIDATED 58706.6 58716
2617010104 255.988 -37.844 347.755 2.173 58707.3742 58707.6521 8046.0 52 3 VALIDATED 58711.8 58721
2617010105 255.987 -37.844 347.754 2.173 58728.2028 58728.2347 1452.0 52 2 VALIDATED 58735.9 58742
2617010106 255.986 -37.846 347.752 2.173 58729.8174 58729.8315 12.0 52 1 VALIDATED 58736.0 58743
2617010107 255.994 -37.841 347.760 2.171 58730.9779 58730.9953 331.0 52 1 VALIDATED 58736.1 58744
2617010108 255.987 -37.845 347.754 2.173 58731.6310 58731.9632 2812.0 52 2 VALIDATED 58736.7 58745
2617010109 255.985 -37.841 347.756 2.176 58732.0094 58732.0281 348.0 52 2 VALIDATED 58736.7 58746
2617010110 255.984 -37.845 347.752 2.175 58733.6864 58733.8431 581.0 52 2 VALIDATED 58737.8 58747
2617010111 255.987 -37.844 347.755 2.173 58734.2666 58734.7472 705.0 52 3 VALIDATED 58738.6 58748
2617010112 255.987 -37.844 347.755 2.173 58739.5548 58739.7553 231.0 52 2 VALIDATED 58742.7 58753
2617010113 255.987 -37.844 347.755 2.173 58740.0064 58740.1449 1537.0 52 3 VALIDATED 58745.6 58754
2617010114 255.984 -37.841 347.756 2.177 58750.3352 58750.5444 2520.0 52 3 VALIDATED 58754.6 58764
2617010115 255.986 -37.844 347.754 2.174 58755.3598 58755.8310 1949.0 52 4 VALIDATED 58763.8 58769