幂律峰破缺的标量扰动诱导的引力波

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-01-16 DOI:10.1088/1475-7516/2025/01/067

Chong-Zhi Li, Chen Yuan and Qing-Guo Huang

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引用次数: 0

摘要

我们给出了由断裂幂律功率谱产生的标量诱导引力波（SIGWs）能谱的分析近似值，并发现渐近幂律尾和中间峰都为引力波能谱贡献了明显的特征。此外，断裂幂律功率谱具有丰富的近峰特征，我们的结果可用作近峰近似值，涵盖各种模型。我们的分析近似有助于快速生成 SIGW 能谱，从而有利于引力波数据分析。

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Gravitational waves induced by scalar perturbations with a broken power-law peak

We give an analytical approximation for the energy spectrum of the scalar-induced gravitational waves (SIGWs) generated by a broken power-law power spectrum, and find that both the asymptotic power-law tails and the intermediate peak contribute distinct features to the SIGW spectrum. Moreover, the broken power-law power spectrum has abundant near-peak features and our results can be used as a near-peak approximation that covers a wide range of models. Our analytical approximation is useful in the rapid generation of the SIGW energy spectrum, which is beneficial for gravitational wave data analysis.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.