观察结果有力地支持了 Rh
IF 5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics of the Dark Universe Pub Date : 2024-07-26 DOI:10.1016/j.dark.2024.101587

Fulvio Melia

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引用次数: 0

摘要

JWST 最近发现了大爆炸后仅几百Myr就形成的良好星系和超大质量黑洞，这严重挑战了ΛCDM 预测的时间线。现在，多环芳烃（PAHs）在 z=6.71 时的最新发现，再加上之前的这些不一致，使得这个模型中的时间压缩问题变得相当棘手。我们根据当前的天体物理模型考虑了与多环芳烃颗粒的形成和生长相关的时间线，并认为它们在 z=6.71 出现有利于 Rh=ct 中的结构形成史，而不是普朗克-ΛCDM 中的结构形成史。我们估计了它们在每种情况下开始生长的时间，然后通过各种关键事件（如 "黑暗时代 "的结束、Pop III恒星形成的开始以及再电离的开始）来追溯它们的历史。JWST的这三个不同发现，即高z星系、高z类星体和令人惊讶的PAHs的早期出现，共同描绘了一幅完全一致的图景：ΛCDM中的时间线在z≳6时被过度压缩，同时强烈支持Rh=ct所预测的早期宇宙的膨胀历史。

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Strong observational support for the Rh=ct timeline in the early universe

JWST’s recent discovery of well-formed galaxies and supermassive black holes only a few hundred Myr after the big bang seriously challenges the timeline predicted by $Λ$ CDM. Now, the latest identification of polycyclic aromatic hydrocarbons (PAHs) at $z = 6.71$ , together with these earlier inconsistencies, makes the time compression problem in this model quite overwhelming. We consider the timeline associated with the formation and growth of PAH grains based on current astrophysical models and argue that their appearance at $z = 6.71$ favors the structure formation history in $R_{h} = c t$ rather than that of Planck- $Λ$ CDM. We estimate the time at which they must have started growing in each case, and then trace their history through various critical events, such as the end of the ‘dark ages’, the beginning of Pop III star formation, and the onset of reionization. Together, these three distinct discoveries by JWST, viz. high- $z$ galaxies, high- $z$ quasars and the surprisingly early appearance of PAHs, all paint a fully consistent picture in which the timeline in $Λ$ CDM is overly compressed at $z ≳ 6$ , while strongly supporting the expansion history in the early Universe predicted by $R_{h} = c t$ .

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来源期刊

Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-

CiteScore

9.60

自引率

7.30%

发文量

118

审稿时长

61 days

期刊介绍： Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.

观察结果有力地支持了 Rh IF 5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics of the Dark Universe Pub Date : 2024-07-26 DOI:10.1016/j.dark.2024.101587 Fulvio Melia

摘要

观察结果有力地支持了 Rh
IF 5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics of the Dark Universe Pub Date : 2024-07-26 DOI:10.1016/j.dark.2024.101587

Fulvio Melia