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arXiv 2303.04714gr-qcastro-ph.HE
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银道面中子星产生的连续引力波:种群统计、可探测性与前景

Continuous gravitational waves from Galactic neutron stars: demography, detectability and prospects

Max Planck Institute for Gravitational Physics (Albert Einstein Institute)(马克斯·普朗克引力物理研究所(爱因斯坦研究所));Leibniz Universität Hannover(汉诺威莱布尼茨大学);Max Planck Institute for Astronomy(马克斯·普朗克天文学研究所);University of Utah(犹他大学);California Institute of Technology(加州理工学院);The University of Tokyo(东京大学);University of Portsmouth(朴茨茅斯大学)

Gianluca Pagliaro, Maria Alessandra Papa, Jing Ming, Jianhui Lian, Daichi Tsuna, Claudia Maraston, Daniel Thomas

AI总结:

该研究探讨银道面非再循环与再循环中子星的连续引力波探测前景,指出磁变形主导的中子星无信号,第三代探测器可多探约250个源,再循环中子星需下一代探测器才能探测。

摘要:

我们研究从“普通”银道面中子星(即非再循环中子星)探测连续引力波信号的前景。我们根据多种模型对恒星遗迹进行时间演化,生成了一个合成种群。我们考虑了全天空连续引力波搜寻给出的最新约束,并将其用于我们的可探测性判据。我们讨论了当前及下一代引力波探测器的探测前景。我们发现,仅由磁变形导致椭率的中子星无法产生任何可探测信号,即便是第三代探测器也不行。当前可探测的源均满足$B\not\tilde{<}10^{12}$高斯,且变形并非仅由磁场导致。对于这些源,我们发现,实际上磁场越强,信号可探测所需的椭率就越大,且该椭率远高于磁场诱导的数值。作为第三代探测器的爱因斯坦望远镜(Einstein Telescope)和宇宙探索者(Cosmic Explorer),将能比当前探测器多探测到约250个源。我们用一个简化模型简要讨论了再循环中子星的情况,发现来自这类天体的连续引力波很可能仍无法被当前探测器探测到,但应能被下一代探测器探测到。

英文摘要:

We study the prospects for detection of continuous gravitational signals from "normal" Galactic neutron stars, i.e. non-recycled ones. We use a synthetic population generated by evolving stellar remnants in time, according to several models. We consider the most recent constraints set by all-sky searches for continuous gravitational waves and use them for our detectability criteria. We discuss detection prospects for the current and the next generation of gravitational wave detectors. We find that neutron stars whose ellipticity is solely caused by magnetic deformations cannot produce any detectable signal, not even by 3rd-generation detectors. Currently detectable sources all have $B\lesssim10^{12}$ G and deformations not solely due to the magnetic field. For these in fact we find that the larger the magnetic field is, the larger is the ellipticity required for the signal to be detectable and this ellipticity is well above the value induced by the magnetic field. Third-generation detectors as the Einstein Telescope and Cosmic Explorer will be able to detect up to $\approx 250$ more sources than current detectors. We briefly treat the case of recycled neutron stars, with a simplified model. We find that continuous gravitational waves from these objects will likely remain elusive to detection by current detectors but should be detectable with the next generation of 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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