对流对I型X射线爆发振荡的阻尼
Damping of Type I X-ray Burst Oscillations by Convection
摘要:
我构建了一个简单的模型,在I型X射线爆发的对流燃烧层的非径向振荡层的稳定性研究对流的影响。线性扰动分析表明,该地区是稳定的非径向振荡时,能量传输是对流为主,但它是不稳定的能量传输是辐射为主。因此,有效的对流总是抑制振荡。这些结果可以解释在某些X射线爆发的峰值期间没有检测到振荡。
英文摘要:
I construct a simple model of the convective burning layer during a type I X-ray burst to investigate the effects convection has on the stability of the layer to nonradial oscillations. A linear perturbation analysis demonstrates that the region is stable to nonradial oscillations when energy transport is convection-dominated, but it is unstable when energy transport is radiation-dominated. Thus, efficient convection always dampens oscillations. These results may explain the nondetection of oscillations during the peak of some X-ray bursts.
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