تقرير
Timing and Spectral Analysis of HMXB 4U 1700-37 Observed with Insight-HXMT
| العنوان: | Timing and Spectral Analysis of HMXB 4U 1700-37 Observed with Insight-HXMT |
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| المؤلفون: | Xiao, Hua, Ji, Long, Zhang, Peng, Ducci, Lorenzo, Doroshenko, Victor, Santangelo, Andrea, Zhang, Shu, Zhang, Shuang-Nan |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | We report timing and spectral studies of the high mass X-ray binary 4U 1700-37 using Insight-HXMT observations carried out in 2020 during its out-of-eclipse state. We found significant variations in flux on a time-scale of kilo-seconds, while the hardness (count rate ratio between 10-30 keV and 2-10 keV) remains relatively stable. No evident pulsations were found over a frequency range of $10^{-3}$-2000 Hz. During the spectral analysis, for the first time we took the configuration of different Insight-HXMT detectors' orientations into account, which allows us obtaining reliable results even if a stable contamination exists in the field-of-view. We found that the spectrum could be well described by some phenomenological models that commonly used in accreting pulsars (e.g., a power law with a high energy cutoff) in the energy range of 2-100 keV. We found hints of cyclotron absorption features around ~ 16 keV or/and ~ 50 keV. Comment: Accepted for publication in ApJ |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2312.16937 |
| رقم الأكسشن: | edsarx.2312.16937 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |