反常X射线脉冲星可能的高能辐射

 利用新的外间隙模型研究了反常X射线脉冲星可能的高能辐射.在该模型中,考虑了磁场几何效应对高能辐射的影响,同时利用平均半径〈r〉处的外间隙大小表示外间隙的特征大小,〈r〉是磁倾角α的函数.这样外间隙大小可以表示为f(P,B,〈r〉(α)),它是周期P,磁场B和平均距离〈r〉的函数.利用该模型计算了反常X射线脉冲星的γ射线的光度和流量,并与以前的计算结果进行比较,分析了考虑磁场几何效应所产生的结果.最后利用该模型计算了几颗典型反常X射线脉冲星(如:4U 0142+615(AXP 0142+615),1E 1841-045,PSR J1809-1943)可能的高能辐射.

The expected high energy radiation from anomalous X-ray pulsars

Based on the new version of outer gap model,the expected high-energy emission from anomalous X-ray pulsars(AXPs) has been studied.In this model,the magnetic geometric effects have been taken into account,and the typical fractional size of outer gap is represented by the outer gap size at an average distance 〈r〉,which is the function of the magnetic inclination angle(α).Then the fractional size of outer gap can be expressed as f(P,B,〈r〉(α)),which is the function of the period(P),magnetic field(B) and α.The γ-ray luminosity and energy flux of AXPs have been calculated,then to compare the results with previous calculations and analyze the differences.The expected high energy radiation for some typical AXPs(such as 4U 0142+615(AXP 0142+615),1E 1841-045,PSR J1809-1943) have been studied.