B-ducted Heating of Black Widow Companions
B-ducted Heating of Black Widow Companions
复制标题
DOI：
10.3847/1538-4357/aa7a02
复制
发表时间：
2017-06
期刊：
影响因子：
--
通讯作者：
N. Sanchez;R. Romani
中科院分区：
文献类型：
--
作者：
N. Sanchez;R. Romani
蒸发双星的伴星（黑寡妇和相关系统）显示出强烈的加热。在许多情况下，观测到的大温度和不对称性与观测到的脉冲星自旋下降功率和预期距离的直接辐射加热不一致。在这里，我们描述了一个加热模型中，脉冲星风设置了一个intrabinary冲击（IBS）对伴侣风和磁场，和一部分的冲击粒子管道沿着这个领域的伴侣磁极。我们表明，各种加热模式，并改善拟合所观察到的光变曲线，可以获得在预期的脉冲星的距离和光度，在牺牲少数模型参数。我们测试这个“IBS-B”模型对三个观察良好的二进制文件和评论的影响系统群众。
The companions of evaporating binary pulsars (black widows and related systems) show optical emission suggesting strong heating. In a number of cases, large observed temperatures and asymmetries are inconsistent with direct radiative heating for the observed pulsar spindown power and expected distance. Here we describe a heating model in which the pulsar wind sets up an intrabinary shock (IBS) against the companion wind and magnetic field, and a portion of the shock particles duct along this field to the companion magnetic poles. We show that a variety of heating patterns, and improved fits to the observed light curves, can be obtained at expected pulsar distances and luminosities, at the expense of a handful of model parameters. We test this “IBS-B” model against three well-observed binaries and comment on the implications for system masses.