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arXiv 2305.03085hep-phastro-ph.COastro-ph.SRgr-qc
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暗物质诱发的恒星振荡

Dark Matter-Induced Stellar Oscillations

Jeremy Sakstein, Ippocratis D. Saltas

AI总结:

该研究提出超轻玻色子暗物质的相干振荡标量场可共振激发恒星振荡,建立了振荡振幅预测框架,发现其主要激发l=1的p模,判定太阳的这类振荡不可探测,并探讨了用其他恒星约束超轻暗物质的前景。

摘要:

已有假设认为暗物质由超轻玻色子构成,其集体现象可被描述为做相干振荡的标量场,相关例子包括axion(轴子)模型与fuzzy dark matter(模糊暗物质)模型。在这种超轻暗物质情形下,该场能量-动量张量的谐变会产生引力势的振荡分量,我们证明这一分量可共振激发恒星振荡。本文建立了预测这类振荡振幅的数学框架,发现超轻暗物质主要激发球谐阶数$l=1$的p模(压力模)。我们对共振激发的太阳振荡开展了研究,得出结论:暗物质诱发的太阳振荡很可能无法被探测到。文中还讨论了利用其他恒星天体约束超轻暗物质的前景。

英文摘要:

It has been hypothesized that dark matter is comprised of ultra-light bosons whose collective phenomena can be described as a scalar field undergoing coherent oscillations. Examples include axion and fuzzy dark matter models. In this ultra-light dark matter scenario, the harmonic variation in the field's energy-momentum tensor sources an oscillating component of the gravitational potential that we show can resonantly-excite stellar oscillations. A mathematical framework for predicting the amplitude of these oscillations is developed, which reveals that ultra-light dark matter predominantly excites p-modes of degree $l=1$. An investigation of resonantly-excited solar oscillations is presented, from which we conclude that dark matter-induced oscillations of the Sun are likely undetectable. We discuss prospects for constraining ultra-light dark matter using other stellar objects.

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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