Cosmological constraint from QSO spatial power spectrum

Details Cosmological constraint from QSO spatial power spectrum Cosmological constraint from QSO spatial power spectrum

2001-10-29

arxiv.org/abs/astro-ph/0110596v1

Astronomy and Astrophysics

Astrophysics

3 pages, 1 figure, to appear in the proceedings of the conference "Lighthouses of the Universe: The Most Luminous Celestial Ob

Scientific paper

10.1007/10856495_86

In this paper we consider constraints on the cosmological density parameters from the spatial power spectrum of QSOs. We first review an analytic approach to the spatial power spectrum of QSOs, then we compare the result of the analytic approach with a preliminary result of the power spectrum from the two-degree Field QSO redshift (2QZ) survey. From a simple chi^2 test, we show that a finite baryon fraction better explains observation of the QSO power spectrum, which might suggest a possible detection of the baryonic oscillations in the QSO power spectrum.

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