论文标题
限制X射线超级爆炸深度的增生的中子恒星浅加热，X射线超级爆炸
Constraining Accreted Neutron Star Crust Shallow Heating with the Inferred Depth of Carbon Ignition in X-ray Superbursts
论文作者
论文摘要
已经积累了尚未算出的尚未算的热源，该热源位于积聚的中子星形外壳内的浅水深处。但是，这种热源的性质尚不清楚。我证明，X射线超爆炸中推断的碳点火深度可以用作对浅加热大小和深度的附加约束。推断的浅加热特性对假定的地壳组成和碳融合反应速率相对不敏感。对于低积聚率，结果却很弱取决于积聚爆发的持续时间，只要随后增加了积聚的时间来替换海洋，以将海洋替换为超级爆炸点火深度。对于以爱丁顿率的增生率，结果表明对爆发持续时间的依赖性更强。与较早的工作一致，这表明URCA冷却不会影响计算出的SuperBurst点火深度，除非加热和冷却来源之间有一定的深度。
Evidence has accumulated for an as-yet unaccounted for source of heat located at shallow depths within the accreted neutron star crust. However, the nature of this heat source is unknown. I demonstrate that the inferred depth of carbon ignition in X-ray superbursts can be used as an additional constraint for the magnitude and depth of shallow heating. The inferred shallow heating properties are relatively insensitive to the assumed crust composition and carbon fusion reaction rate. For low accretion rates, the results are weakly dependent on the duration of the accretion outburst, so long as accretion has ensued for enough time to replace the ocean down to the superburst ignition depth. For accretion rates at the Eddington rate, results show a stronger dependence on the outburst duration. Consistent with earlier work, it is shown that urca cooling does not impact the calculated superburst ignition depth unless there is some proximity in depth between the heating and cooling sources.
