中子星作为宇宙中微子背景的探测器

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-03-17 DOI:10.1103/physrevd.111.063049

Garv Chauhan

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引用次数: 0

摘要

宇宙中微子背景（CνB）构成了标准宇宙学模型的最后可观测预测，它尚未被直接探测到。在这项工作中，我们展示了中微子在密集中子物质上的相干散射如何导致中子星（NSs）中的额外冷却通道。我们还考虑了引力捕获和助推的影响，但发现只有在存在大过密度的情况下冷却才是有效的。我们进一步讨论了从附近的NSs增强地球上的CνB通量的预测，以及在未来附近星系超新星的情况下潜在的探测前景。虽然目前这些想法还没有提供任何探测前景，但它们可以用来约束短长度尺度O（10公里）上η≤1011-1014的过密度。我们还讨论了新的物理情景，如远程力，对通过CνB的NS冷却的影响。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Neutron stars as a probe of the cosmic neutrino background

The cosmic neutrino background (CνB) constitutes the last observable prediction of the standard cosmological model, which has yet to be detected directly. In this work, we show how the coherent scattering of neutrinos off dense neutron matter can lead to an additional cooling channel in neutron stars (NSs). We also include the effects of gravitational capture and boosting, but find that the cooling is efficient only in the presence of large overdensities. We further discuss the prediction of a boosted CνB flux on Earth from nearby NSs and the potential detection prospects in the case of a future nearby galactic supernova. Although currently these ideas do not offer any detection prospects, they can be used to constrain overdensities η≲1011–1014 on short length scales O(10 km). We also discuss the impact of new physics scenarios, such as long-range forces, on NS cooling through the CνB.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.