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arXiv 1102.4348astro-ph.HEastro-ph.SRgr-qc
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毫秒级恒星的宇宙循环

Cosmic recycling of millisecond pulsars

Wynn C. G. Ho, Thomas J. Maccarone, Nils Andersson

摘要:

我们比较了低质量X射线双星(LMXB)中中子星的自转速率与双星的轨道周期。我们发现,虽然短轨道周期LMXB跨越一个范围内的中子星的旋转速率,所有的长周期LMXB有快速的转子。我们还发现,旋转速率是最高的平均质量吸积率最高的系统,可以预期,如果吸积率与轨道周期。我们表明,这些属性可以理解的自旋之间的平衡,由于吸积和自旋由于引力辐射。我们的设想表明,这些系统发出的引力辐射可能会被未来的地面引力波探测器探测到。

英文摘要:

We compare the rotation rate of neutron stars in low-mass X-ray binaries (LMXBs) with the orbital period of the binaries. We find that, while short orbital period LMXBs span a range of neutron star rotation rates, all the long period LMXBs have fast rotators. We also find that the rotation rates are highest for the systems with the highest mean mass accretion rates, as can be expected if the accretion rate correlates with the orbital period. We show that these properties can be understood by a balance between spin-up due to accretion and spin-down due to gravitational radiation. Our scenario indicates that the gravitational radiation emitted by these systems may be detectable by future ground-based gravitational wave detectors.

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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