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Cosmological Constraints from the SDSS Luminous Red Galaxies
M Tegmark, D Eisenstein, M Strauss +64
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints…
Constraining Primordial Non-Gaussianities from the WMAP2 2-1 Cumulant Correlator Power Spectrum
Gang Chen, Istvan Szapudi
We measure the 2-1 cumulant correlator power spectrum , a degenerate bispectrum, from the second data release of the Wilkinson Microwave Anisotropy Probe (WMAP). Our high…
Information content in the halo-model dark-matter power spectrum
Mark C. Neyrinck, István Szapudi, Christopher D. Rimes
Using the halo model, we investigate the cosmological Fisher information in the non-linear dark-matter power spectrum about the initial amplitude of linear power. We find that ther…
GalICS V : Low and high order clustering in mock SDSS's
J. Blaizot, I. Szapudi, S. Colombi +6
[Abridged] We use mock catalogues based on the GALICS model (Hatton et al. 03) to explore the nature of galaxy clustering observed in the SDSS. We measure low and high order angula…
Naturalness of the Vacuum Energy in Holographic Theories
Csaba Balazs, Istvan Szapudi
Based on the cosmic holographic conjecture of Fischler and Susskind, we point out that the average energy density of the universe is bound from above by its entropy limit. Since Fr…
The Effect of Large-Scale Structure on the SDSS Galaxy Three-Point Correlation Function
R. C. Nichol, R. K. Sheth, Y. Suto +21
We present measurements of the normalised redshift-space three-point correlation function (Q_z) of galaxies from the Sloan Digital Sky Survey (SDSS) main galaxy sample. We have app…