Equation of state of the photoionized intergalactic medium
We develop an efficient method to study the effects of reionization history on the temperature-density relation of the intergalactic medium in the low density limit (overdensity less than 5). It is…
Cosmological parameters from SDSS and WMAP
- Max Tegmark, M. Strauss, E. al.
- Physics
- 27 October 2003
We measure cosmological parameters using the three-dimensional power spectrum P(k) from over 200,000 galaxies in the Sloan Digital Sky Survey (SDSS) in combination with WMAP and other data. Our…
The Three-Dimensional Power Spectrum of Galaxies from the Sloan Digital Sky Survey
- M. Tegmark, M. Blanton, D. York
- Physics
- 10 May 2004
We measure the large-scale real-space power spectrum P(k) by using a sample of 205,443 galaxies from the Sloan Digital Sky Survey, covering 2417 effective square degrees with mean redshift z ≈ 0.1.…
Ultralight scalars as cosmological dark matter
- L. Hui, J. Ostriker, S. Tremaine, E. Witten
- Physics
- 26 October 2016
Many aspects of the large-scale structure of the Universe can be described successfully using cosmological models in which 27±1% of the critical mass-energy density consists of cold dark matter…
The First Data Release of the Sloan Digital Sky Survey
- K. Abazajian, J. Adelman-McCarthy, D. Zucker
- Physics
- 26 May 2003
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of…
Probing the Universe with the Lyα forest — I. Hydrodynamics of the low-density intergalactic medium
We introduce an efficient and accurate alternative to full hydrodynamic simulations, Hydro-PM (HPM), for the study of the low column density Lyman-alpha forest (NHI <∼ 10 14 cm−2). It consists of a…
How Many Galaxies Fit in a Halo? Constraints on Galaxy Formation Efficiency from Spatial Clustering
- R. Scoccimarro, R. Sheth, L. Hui, B. Jain
- Physics
- 22 June 2000
We study galaxy clustering in the framework of halo models, where gravitational clustering is described in terms of dark matter halos. At small scales, dark matter clustering statistics are dominated…
The Thermal Memory of Reionization History
The recent measurement by WMAP of a large electron-scattering optical depth τe = 0.17 ± 0.04 is consistent with a simple model of reionization in which the intergalactic medium (IGM) is ionized at…
The 3D power spectrum of galaxies from the SDSS
- M. Tegmark, M. Blanton, 26 others
- Physics
- 27 October 2003
We measure the large-scale real-space power spectrum P(k) using a sample of 205,443 galaxies from the Sloan Digital Sky Survey, covering 2417 square degrees with mean redshift z~0.1. We employ a…
Effective field theory for hydrodynamics: Thermodynamics, and the derivative expansion
- S. Dubovsky, L. Hui, A. Nicolis, D. Son
- Physics
- 4 July 2011
We consider the low-energy effective field theory describing the infrared dynamics of non-dissipative fluids. We extend previous work to accommodate conserved charges, and we clarify the matching…
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