论文标题
BE/X射线二进制EXO 2030+375的光谱与时机分析在其巨型2021爆发期间
Spectral & Timing analysis of Be/X-ray binary EXO 2030+375 during its giant 2021 outburst
论文作者
论文摘要
我们报告了2021年II型爆发期间高质量X射线二进制EXO 2030+375的X射线光谱和时间分析。我们已经合并了nustar，nicer，\ textit {swift}/bat \＆\ textit {fermi}/gbm观察值，以对源进行全面分析。已经生成和分析了不同能量范围和时间间隔的脉冲谱。我们已经对峰值爆发状况以及爆发状态中的观察结果进行了简要比较。发现脉冲轮廓随时间和能量而发展。在X射线连续体中观察到（6-7）KEV处的铁发射线。在与峰爆发状态相对应的光谱中观察到了不同的吸收特征，而在爆发的后来衰减阶段未检测到此类特征。我们估计特征性的旋转时间尺度为$ \ Backsim $ 60年。系统的连续通量和涵盖整个爆发时期的不同亮度已被用来解释来源的特征。我们总结了各种参数的可变性及其潜在的物理含义。
We report the X-ray spectral and timing analysis of the high mass X-ray binary EXO 2030+375 during the 2021 type II outburst. We have incorporated NuSTAR, NICER, \textit{Swift}/BAT \& \textit{Fermi}/GBM observations to carry out a comprehensive analysis of the source. Pulse profiles in different energy ranges and time intervals have been generated and analyzed. We have performed a brief comparison of the observations amidst the peak outburst condition and also during the decaying state of the outburst. Pulse profiles are found to evolve with time and energy. An iron emission line at (6-7) keV is observed in the X-ray continuum. Distinct absorption features were observed in the spectra corresponding to the peak outburst state while such features were not detected during the later decaying phase of the outburst. We have estimated the characteristic spin-up time scale to be $\backsim$ 60 years. The continuum flux of the system and the varying luminosities covering the entire outburst period have been used to interpret the characteristics of the source. We have summarized the variability of various parameters along with their underlying physical implications.
