论文标题
XMM-Newton和Millihertz准周期振荡的RMS光谱中的XMM-Newton和中子低质量X射线二进制二进制4U 1636-53中的RMS光谱
XMM-Newton and NICER measurement of the rms spectrum of the millihertz quasi-periodic oscillations in the neutron-star low-mass X-ray binary 4U 1636-53
论文作者
论文摘要
我们使用了两个XMM-NEWTON和六个中子星内部组成探索器（更好）观测值，以研究中子型巨星低质量X射线X射线X射线二进制4U 1636-53中Millihertz Quasi-periodic振荡（MHz QPO）的分数RMS幅度。我们首次研究了MHz QPOS的分数RMS幅度与4U 1636-53中的能量降低至0.2 KEV。我们发现，随着能量从0.2 keV增加到3 keV，MHz QPOS的RMS幅度增加，与以前在3 keV以上观察到的趋势下降不同。但是，任何当前的理论模型尚未预测这一发现，它提供了一个重要的观察特征，可以推测新发现的MHz振荡是否起源于中子星表面的边缘稳定的核燃烧过程。
We used two XMM-Newton and six Neutron Star Interior Composition Explorer (NICER) observations to investigate the fractional rms amplitude of the millihertz quasi-periodic oscillations (mHz QPOs) in the neutron-star low-mass X-ray binary 4U 1636-53. We studied, for the first time, the fractional rms amplitude of the mHz QPOs vs. energy in 4U 1636-53 down to 0.2 keV. We find that, as the energy increases from 0.2 keV to 3 keV, the rms amplitude of the mHz QPOs increases, different from the decreasing trend that has been previously observed above 3 keV. This finding has not yet been predicted by any current theoretical model, however, it provides an important observational feature to speculate whether a newly discovered mHz oscillation originates from the marginally stable nuclear burning process on the neutron star surface.
