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arXiv 2107.09151astro-ph.COgr-qchep-ph
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暗区相互作用和超新星绝对星等张力

Dark sector interaction and the supernova absolute magnitude tension

Rafael C. Nunes, Eleonora Di Valentino

摘要:

人们已经深入讨论了宇宙动力学在晚期的变化是否能够解决$H_0$张力。另一方面,也有人认为$H_0$张力实际上是超新星绝对星等$M_B$的张力。在这项工作中,我们鲁棒地约束$M_B$使用Pantheon超新星Ia(SN)的样品,重子声学振荡(BAO),和大爆炸核合成(BBN)的数据,并评估$M_B$张力通过比较三个理论模型,即标准的$Λ$ CDM,$w$ CDM和暗能量(DE)和暗物质(DM)之间的非引力相互作用(IDE)。我们发现,IDE模型可以解决$M_B$张力与耦合不为零,在95\% CL,确认所获得的结果使用$H_0$前。

英文摘要:

It has been intensively discussed if modifications in the dynamics of the Universe at late times is able or not to solve the $H_0$ tension. On the other hand, it has also been argued that the $H_0$ tension is actually a tension on the supernova absolute magnitude $M_B$. In this work, we robustly constraint $M_B$ using Pantheon Supernovae Ia (SN) sample, Baryon Acoustic Oscillations (BAO), and Big Bang Nucleosynthesis (BBN) data, and assess the $M_B$ tension by comparing three theoretical models, namely the standard $Λ$CDM, the $w$CDM and a non-gravitational interaction (IDE) between dark energy (DE) and dark matter (DM). We find that the IDE model can solve the $M_B$ tension with a coupling different from zero at 95\% CL, confirming the results obtained using a $H_0$ prior.

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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