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arXiv 1602.06803astro-ph.HEastro-ph.SR
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光学研究对理解毫秒脉冲双星的帮助

The Aid of Optical Studies in Understanding Millisecond Pulsar Binaries

Zorawar Wadiasingh, Alice K. Harding, Christo Venter, Markus Boettcher

摘要:

通过射电和光学搜索未确认的\textit{Fermi}源,发现了大量新的“黑寡妇”和“红背”高能毫秒双星。同步辐射,从粒子加速到几个TeV的intrabinary冲击,表现出调制的二元轨道周期。我们模拟的双峰X射线光变曲线调制的轨道周期,产生相对论多普勒提升沿intrabinary冲击,定性匹配在许多来源中观察到的。在这个模型中,redbacks和过渡脉冲星系统的双峰X射线光变曲线是观察在下结合有本质上不同的冲击几何比其他毫秒脉冲星双星的光变曲线是集中在上结合。我们讨论,并主张,如何当前和未来的光学观测可能有助于限制发射几何,intrabinary冲击和未知的物理脉冲星风。

英文摘要:

A large number of new "black widow" and "redback" energetic millisecond pulsars with irradiated stellar companions have been discovered through radio and optical searches of unidentified \textit{Fermi} sources. Synchrotron emission, from particles accelerated up to several TeV in the intrabinary shock, exhibits modulation at the binary orbital period. Our simulated double-peaked X-ray light curves modulated at the orbital period, produced by relativistic Doppler-boosting along the intrabinary shock, are found to qualitatively match those observed in many sources. In this model, redbacks and transitional pulsar systems where the double-peaked X-ray light curve is observed at inferior conjunction have intrinsically different shock geometry than other millisecond pulsar binaries where the light curve is centered at superior conjunction. We discuss, and advocate, how current and future optical observations may aid in constraining the emission geometry, intrabinary shock and the unknown physics of pulsar winds.

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