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arXiv 2303.08201astro-ph.COgr-qchep-ph
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从多个CMB探针看相互作用暗能量的一致观点

A Consistent View of Interacting Dark Energy from Multiple CMB Probes

Yuejia Zhai, William Giarè, Carsten van de Bruck, Eleonora Di Valentino, Olga Mena, Rafael C. Nunes

AI总结:

本文利用Planck、ACT和WMAP的CMB数据,发现多数组合以95%置信水平支持暗能量与暗物质相互作用,且H0值与本地测量一致,并进一步分析了该偏好的来源。

摘要:

我们根据三个独立实验发布的宇宙微波背景测量数据,分析了一个暗能量与暗物质之间存在相互作用的宇宙学模型,这三个实验分别是:Planck卫星的最新数据、阿塔卡马宇宙学望远镜以及WMAP(9年数据)。我们表明,不同数据集组合给出了相似的结果,在大多数情况下以95%置信水平显著支持一个相互作用的暗区。值得注意的是,当通过独立探针进行交叉检验时,这种偏好仍然保持一致,同时总是给出与本地距离阶梯测量相一致的膨胀率H0值。我们通过仔细审查不同实验测得的温度与偏振各向异性角功率谱,研究了这种偏好的来源。

英文摘要:

We analyze a cosmological model featuring an interaction between dark energy and dark matter in light of the measurements of the Cosmic Microwave Background released by three independent experiments: the most recent data by the Planck satellite and the Atacama Cosmology Telescope, and WMAP (9-year data). We show that different combinations of the datasets provide similar results, always favoring an interacting dark sector with a $95\%$~CL significance in the majority of the cases. Remarkably, such a preference remains consistent when cross-checked through independent probes, while always yielding a value of the expansion rate $H_0$ consistent with the local distance ladder measurements. We investigate the source of this preference by scrutinizing the angular power spectra of temperature and polarization anisotropies as measured by different experiments.

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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