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Related papers: Detecting the Baryons in Matter Power Spectra

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We determine a constraint on the growth factor by measuring the damping of the baryon acoustic oscillations in the matter power spectrum using the Sloan Digital Sky Survey luminous red galaxy sample. The damping of the BAO is detected at…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-24 Gen Nakamura , Gert Huetsi , Takahiro Sato , Kazuhiro Yamamoto

We make use of recent developments in the analysis of galaxy redshift surveys to present an easy to use matrix-based analysis framework for the galaxy power spectrum multipoles, including wide-angle effects and the survey window function.…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-24 Florian Beutler , Patrick McDonald

(Shortened Abstract). We analyze a redshift sample of Abell/ACO clusters and compare them with numerical simulations based on the truncated Zel'dovich approximation (TZA), for a list of eleven dark matter (DM) models. For each model we run…

Baryon acoustic oscillation (BAO) is one of the important standard rulers in cosmology. The results of the latest BAO measurements by Dark Energy Spectroscopic Instrument (DESI) survey have been reported. Cosmology with the varying electron…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-23 Osamu Seto , Yo Toda

With the recent publication of the measurements of the radiation angular power spectrum from the BOOMERanG Antarctic flight (de Bernardis et al. 2000), it has become apparent that the currently favoured spatially-flat cold dark matter model…

Astrophysics · Physics 2009-10-31 Louise M. Griffiths , Joseph Silk , Saleem Zaroubi

We provide a simple toy model to elucidate the effects of baryonic cooling on predictions of the convergence power spectrum in weak gravitational lensing. Our model suggests that the effects of baryonic cooling on dark matter halo profiles…

Astrophysics · Physics 2016-08-30 Martin White

The 2dF Galaxy Redshift Survey is the first to observe more than 100,000 redshifts. This allows precise measurements of many of the key statistics of galaxy clustering, in particular redshift-space distortions and the large-scale power…

We perform forecasts for how baryon acoustic oscillation (BAO) scale and redshift-space distortion (RSD) measurements from future spectroscopic emission line galaxy (ELG) surveys such as Euclid are degraded in the presence of spectral line…

Cosmology and Nongalactic Astrophysics · Physics 2019-07-10 G. E. Addison , C. L. Bennett , D. Jeong , E. Komatsu , J. L. Weiland

We analyse the large-scale correlation function of the 6dF Galaxy Survey (6dFGS) and detect a Baryon Acoustic Oscillation (BAO) signal. The 6dFGS BAO detection allows us to constrain the distance-redshift relation at z_{\rm eff} = 0.106. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Florian Beutler , Chris Blake , Matthew Colless , D. Heath Jones , Lister Staveley-Smith , Lachlan Campbell , Quentin Parker , Will Saunders , Fred Watson

We develop methods for investigating baryon acoustic oscillation (BAO) features in cosmological models with non-trivial (but slowly varying) averaged spatial curvature: models that are not necessarily flat, close to flat, nor with constant…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-06 Asta Heinesen , Chris Blake , Yong-Zhuang Li , David L. Wiltshire

In this paper we present and validate the galaxy sample used for the analysis of the baryon acoustic oscillation (BAO) signal in the Dark Energy Survey (DES) Y6 data. The definition is based on a color and redshift-dependent magnitude cut…

The Baryon Acoustic Oscillations (BAO) in the large-scale structure of the universe leave a distinct peak in the two-point correlation function of the matter distribution. That acoustic peak is smeared and shifted by bulk flows and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Svetlin Tassev , Matias Zaldarriaga

We study the effect of baryons on the abundance of structures and substructures in a Lambda-CDM cosmology, using a pair of high resolution cosmological simulations from the GIMIC project. Both simulations use identical initial conditions,…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-25 Till Sawala , Carlos S. Frenk , Robert A. Crain , Adrian Jenkins , Joop Schaye , Tom Theuns , Jesus Zavala

Many non-minimal dark matter scenarios lead to oscillatory features in the matter power spectrum induced by interactions either within the dark sector or with particles from the standard model. Observing such dark acoustic oscillations…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-09 Timothée Schaeffer , Aurel Schneider

Future galaxy surveys will measure baryon acoustic oscillations (BAOs) with high significance, and a complete understanding of the anisotropies of BAOs in redshift space will be important to exploit the cosmological information in BAOs.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-22 Donghui Jeong , Liang Dai , Marc Kamionkowski , Alexander S. Szalay

We present cosmological parameter measurements from the Deep Lens Survey (DLS) using galaxy-mass and galaxy-galaxy power spectra in the multipole range $\ell=250\sim2000$. We measure galaxy-galaxy power spectra from two lens bins centered…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-23 Mijin Yoon , M. James Jee , J. Anthony Tyson , Samuel Schmidt , David Wittman , Ami Choi

Light axion-like particles occur in many theories of beyond-Standard-Model physics, and may make up some or all of the universe's dark matter. One of the ways they can couple to the Standard Model is through the electromagnetic $F_{\mu\nu}…

High Energy Physics - Phenomenology · Physics 2021-04-14 Robert Lasenby

The clustering properties of the Universe at large-scales are currently being probed at various redshifts through several cosmological tracers and with diverse statistical estimators. Here we use the three-point angular correlation function…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-05 E. de Carvalho , A. Bernui , H. S. Xavier , C. P. Novaes

Data from Type Ia supernovae, along with X-ray cluster estimates of the universal baryon fraction and Big Bang Nucleosynthesis (BBN) determinations of the baryon-to-photon ratio, are used to provide estimates of several global cosmological…

Astrophysics · Physics 2007-05-23 G. Steigman , T. P. Walker , A. Zentner
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