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arXiv 0902.2968astro-ph.COastro-ph.IM
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利用脉冲星的引力波天文学:大质量黑洞合并与早期宇宙

Gravitational Wave Astronomy Using Pulsars: Massive Black Hole Mergers & the Early Universe

P. Demorest, J. Lazio, A. Lommen

摘要:

引力波(GWs)是爱因斯坦的广义相对论预言的时空结构中的波动。使用一组毫秒级的射电望远镜作为高精度的时钟,这种辐射的纳赫兹波段很可能在未来十年内被直接探测到。奈赫兹频率的巨波可望由大质量黑洞双星系统的合并所发射,也可能由早期宇宙中形成的宇宙弦或超弦所发射。直接探测GWs将打开一扇新的宇宙之窗,并提供电磁观测无法获得的天体物理信息。在本文中,我们描述了低频GWs的潜在来源,以及通过脉冲星计时探测和利用GWs所需的现状和关键进展。

英文摘要:

Gravitational waves (GWs) are fluctuations in the fabric of spacetime predicted by Einstein's theory of general relativity. Using a collection of millisecond pulsars as high-precision clocks, the nanohertz band of this radiation is likely to be directly detected within the next decade. Nanohertz-frequency GWs are expected to be emitted by mergers of massive black hole binary systems, and potentially also by cosmic strings or superstrings formed in the early Universe. Direct detection of GWs will open a new window to the Universe, and provide astrophysical information inaccessible via electromagnetic observations. In this paper, we describe the potential sources of low-frequency GWs and the current status and key advances needed for the detection and exploitation of GWs through pulsar timing.

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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