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arXiv 1402.5507astro-ph.HEastro-ph.GA
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黑寡妇和红背星的双星内激波辐射

Intrabinary Shock Emission from Black Widows and Redbacks

Mallory S. E. Roberts, Maura A. McLaughlin, Peter Gentile, Ester Aliu, Jason W. T. Hessels, Scott M. Ransom, Paul S. Ray

摘要:

在近距离($P_b < 1$ ~天)双星系统中的毫秒脉冲星提供了与孤立脉冲星不同的脉冲星风和冲击的观点。自2009年以来,银河系中已知的这些系统的数量已经大大增加。我们一直在系统地研究这些新发现的多波长系统。通常,伴星几乎充满了罗氏瓣,并被脉冲星加热,导致伴星的质量损失。脉冲星风与这种物质一起在伴星表面上方震荡。我们讨论了这个冲击波的各种观测性质,包括射电日食,轨道调制的X射线发射,和潜在的$γ$射线发射。红背,其同伴可能是非简并的,并且明显更大,通常比黑寡妇有更多的发光冲击,黑寡妇有非常低的质量同伴。这是预料之中的,因为更大质量的红背伴星拦截了更大比例的脉冲星风。我们还比较了这些系统的吸积毫秒彗星,这可能是黑寡妇的祖先,在某些情况下,可以通过之间的redback和吸积阶段来回。

英文摘要:

Eclipsing millisecond pulsars in close ($P_b < 1$~day) binary systems provide a different view of pulsar winds and shocks than do isolated pulsars. Since 2009, the numbers of these systems known in the Galactic field has increased enormously. We have been systematically studying many of these newly discovered systems at multiple wavelengths. Typically, the companion is nearly Roche-lobe filling and heated by the pulsar which drives mass loss from the companion. The pulsar wind shocks with this material just above the surface of the companion. We discuss various observational properties of this shock, including radio eclipses, orbitally modulated X-ray emission, and the potential for $γ$-ray emission. Redbacks, whose companions are likely non-degenerate and significantly more massive, generally have more luminous shocks than black widows which have very low mass companions. This is expected since the more massive redback companions intercept a greater fraction of the pulsar wind. We also compare these systems to accreting millisecond pulsars, which may be progenitors of black widows and in some cases can pass back and forth between redback and accretion phases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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