A study of type I X-ray bursts from an NS accreting pure helium
A study of type I X-ray bursts from an NS accreting pure helium
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DOI：
10.1088/1674-4527/20/4/49
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发表时间：
2020-04
影响因子：
1.8
通讯作者：
Yanhui Ma;Helei Liu;Chunhua Zhu;Zhaojun Wang;Lin Li;G. Lü
中科院分区：
文献类型：
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作者：
Yanhui Ma;Helei Liu;Chunhua Zhu;Zhaojun Wang;Lin Li;G. Lü
利用恒星天体物理实验模块(MESA)程序，研究了中子星(NSS)吸附纯氦产生的I型X射线暴(XRB)，观测中称之为中间XRB。我们模拟了21个质量吸积率(Ṁ)从2.5×10−8到5×10−10 M⊙yr−1的中等XRBs模型。与NS吸积具有太阳金属性质的物质的普通XRB相比，中等XRB具有更高的光度和更长的重现时间，这与观测结果基本一致。我们发现，中间XRBs的重现时间与Ṁ−2.0成正比。
Using the Modules for Experiments in Stellar Astrophysics (MESA) code, we investigate Type I X-ray bursts (XRBs) produced by neutron stars (NSs) accreting pure helium, which are called intermediate XRBs in observations. We simulate 21 models for intermediate XRBs with various mass-accretion rates (Ṁ) from 2.5 × 10−8 to 5 × 10−10 M⊙ yr−1. Compared with normal XRBs, in which the NS accretes matter with solar metallicity, intermediate XRBs have higher luminosity and longer recurrence time, which are essentially consistent with observations. We find that the recurrence time of intermediate XRBs is proportional to Ṁ−2.0.