Guzzo 2008 一种巡天来鉴别各种不同宇宙学模型的正确性

主要内容:
具体的原理也还没看懂，就是说有了一种观测上的手段，可以区分不同模型对宇宙加速膨胀解释的正确性。还数据的误差较大时，大家都可以解释，但是精确后，理论的不是兼并的，导致有的被淘汰。见下图。目前的观测还不行，要进一步观测。

精彩摘抄:


文章信息:

Editor's Summary

31 January 2008

A glimpse of dark energy

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Cosmologists can tell from observing distant supernovae that the Universe is undergoing a phase of accelerated expansion, but the physical cause remains a mystery. The favoured explanation requires huge amounts of invisible 'dark energy', distributed across the Universe, forcing expansion via gravitational repulsion. A new survey of redshift distortions of thousands of faint galaxies provides hints as to the nature of dark-energy induced cosmic acceleration. The distortion at a redshift of z = 0.8 is consistent with the standard cosmological-constant model with low matter density and flat geometry. The current error bars are too large to distinguish among alternative origins for the accelerated expansion, but the next generation of galactic surveys, more powerful and far-reaching than the current crop, should provide much tighter constraints on the properties of dark energy.

News and Views: Cosmology: An ancient view of acceleration

The Universe is expanding ever faster — the effect of 'dark energy', most astronomers believe. Surveys of how galaxies were distributed in the past could provide precise clues to what is driving this acceleration.

Michael A. Strauss

doi:10.1038/451531a

Full Text | PDF (469K)

Letter: A test of the nature of cosmic acceleration using galaxy redshift distortions

L. Guzzo, M. Pierleoni, B. Meneux, E. Branchini, O. Le Fèvre, C. Marinoni, B. Garilli, J. Blaizot, G. De Lucia, A. Pollo, H. J. McCracken, D. Bottini, V. Le Brun, D. Maccagni, J. P. Picat, R. Scaramella, M. Scodeggio, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. Arnouts, S. Bardelli, M. Bolzonella, A. Bongiorno, A. Cappi, S. Charlot, P. Ciliegi, T. Contini, O. Cucciati, S. de la Torre, K. Dolag, S. Foucaud, P. Franzetti, I. Gavignaud, O. Ilbert, A. Iovino, F. Lamareille, B. Marano, A. Mazure, P. Memeo, R. Merighi, L. Moscardini, S. Paltani, R. Pellò, E. Perez-Montero, L. Pozzetti, M. Radovich, D. Vergani, G. Zamorani & E. Zucca

doi:10.1038/nature06555

First paragraph | Full Text | PDF (423K) | Supplementary information