证据暗能量驱动的恒星形成:信息暗能量?
1School of Engineering and Informatics, University of Sussex, Brighton BN1 9QT, UK.
Entropy (Basel, Switzerland)
|February 26, 2025
概括
暗能量可能源于恒星形成,正如恒星质量密度测量所示. 这种"信息暗能量"模型与宇宙学观测一致,并解决了标准 ΛCDM 模型中的几个关键挑战.
科学领域:
- 宇宙学的宇宙学是什么?
- 天体物理学 天体物理学
- 理论物理 理论物理
背景情况:
- 标准宇宙模型 (ΛCDM) 面临挑战,包括宇宙常数问题和哈勃常数 (H0) 和物质聚类 (σ8) 测量的紧张关系.
- 负责加速宇宙膨胀的暗能量仍然被人们理解得很少.
研究的目的:
- 为了研究一个新的理论,暗能量直接来自恒星形成.
- 测试恒星质量密度测量是否可以解释观测到的暗能量特性.
- 探索这个新模型在解决现有的宇宙学紧张局势方面的潜力.
主要方法:
- 分析了恒星质量密度测量作为宇宙尺度 (SMD) 的函数.
- 使用CPL w0 - wa模型进行参数化测量.
- 进行比较的模型与Planck 2018,Pantheon+ 2022,DES 2024和DESI 2024的观测数据相匹配.
主要成果:
- 恒星质量密度测量通过CPL参数化得到了很好的描述,与暗能量观测相一致.
- 最喜欢的模型,SMD (a) 0.5,表明天体物理物体的温度决定了暗能量密度.
- 加热气体和等离子体的信息/是一种潜在的暗能量来源.
结论:
- 恒星形成是一个可信的暗能量来源.
- 这种"信息暗能量"模型为宇宙常数和巧合问题提供了解决方案.
- 该模型还可以减轻H0和s8的张力,并解释一些暗物质效应.
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