论文标题
在等离子体环境中中子星的脉冲轮廓的分析表达式
Analytical expressions for pulse profile of neutron stars in plasma environments
论文作者
论文摘要
我们介绍了缓慢旋转的无线电脉冲星的光曲线的分析研究，重点是从血浆环境的存在中得出的色素效应。分析紧凑度，度量模型和电子等离子体密度曲线的影响。在对脉冲星的轨迹和亮度曲线进行数值整合以用于代表脉冲星的外部区域的不同球体对称度量标准之后，我们将近似的Beloborodov公式推广，以包括等离子体校正，以使轨迹的简化和脉冲的计算得出的简化型号的简单分析表达式进行了简化的分析表达式，并通过一定的计算进行了计算。我们研究了我们的近似值所犯的错误，并比较数值和分析程序。我们还展示了如何使用新的形式主义来建模来自不同发射帽的通量，不一定是圆形或反物质，包括环形热点的情况。最后，我们将Beloborodov引入的分类扩展到两个可区分的，非抗逆转录的，有限的尺寸发射帽的情况，显示了各自的分类图和某些特征性脉冲曲线。
We present an analytical study of light curves of slowly rotating radio pulsars with emphasis on the chromatic effects derived from the presence of a plasma environment; analyzing the effects of the compactness, the metric model, and the electronic plasma density profile. After doing a numerical integration of the trajectories and luminosity curves of pulsars for different spherically symmetric metrics representing the exterior region of the pulsar, we generalize the approximate Beloborodov formula in order to include plasma corrections, obtaining simple analytical expressions for the trajectories and the observed flux and significantly simplifying the calculation of the pulse profiles by a drastic reduction of their computational cost. We study the errors committed by our approximation, comparing the numerical and analytical procedures. We also show how to use the new formalism to model the flux coming from different emission caps, not necessarily circular or antipodal and including the case of ring-shaped hot spots. Finally, we extend the classification introduced by Beloborodov to the case of two distinguishable, non-antipodal, finite size emission caps, showing the respective classification maps and some of the characteristic pulse profiles.
