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arXiv 1109.6793astro-ph.CO
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基本参数的变化与暗能量。主成分法

Variation of fundamental parameters and dark energy. A principal component approach

L. Amendola, A. C. O. Leite, C. J. A. P. Martins, N. J. Nunes, P. O. J. Pedrosa, A. Seganti

摘要:

我们讨论了基于主成分分析的方法来约束暗能量状态方程使用组合的Ia型超新星在低红移和光谱测量的不同的基本耦合在较高的红移。我们讨论了这种方法的性能时,未来更好的质量数据集可用,重点是两个即将推出的ESO光谱仪-ESTO的VLT和CODEX的E-ELT -其中包括这些测量作为其科学案例的关键部分。这些可以实现详细描述暗能量特性的前景,几乎一直到红移4。

英文摘要:

We discuss methods based on Principal Component Analysis to constrain the dark energy equation of state using a combination of Type Ia supernovae at low redshift and spectroscopic measurements of varying fundamental couplings at higher redshifts. We discuss the performance of this method when future better-quality datasets are available, focusing on two forthcoming ESO spectrographs - ESPRESSO for the VLT and CODEX for the E-ELT - which include these measurements as a key part of their science cases. These can realize the prospect of a detailed characterization of dark energy properties almost all the way up to redshift 4.

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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