Imprints of Oscillatory Bispectra on Galaxy Clustering
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/09/003
Abstract: Long-short mode coupling during inflation, encoded in the squeezed bispectrum of curvature perturbations, induces a dependence of the local, small-scale power spectrum on long-wavelength perturbations, leading to a scale-dependent halo bias. While this scale dependence… read more here.
Keywords: imprints oscillatory; bispectra galaxy; non gaussianity; physics ... See more keywords
SimBIG: mock challenge for a forward modeling approach to galaxy clustering
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/010
Abstract: Simulation-Based Inference of Galaxies (SimBIG) is a forward modeling framework for analyzing galaxy clustering using simulation-based inference. In this work, we present the SimBIG forward model, which is designed to match the observed SDSS-III BOSS… read more here.
Keywords: galaxy clustering; forward modeling; mock; mock challenge ... See more keywords
2D-FFTLog: efficient computation of real-space covariance matrices for galaxy clustering and weak lensing
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1726
Abstract: Accurate covariance matrices for two-point functions are critical for inferring cosmological parameters in likelihood analyses of large-scale structure surveys. Among various approaches to obtaining the covariance, analytic computation is much faster and less noisy than… read more here.
Keywords: real space; covariance matrices; computation; galaxy clustering ... See more keywords
Hawaii Two-0: high-redshift galaxy clustering and bias
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa432
Abstract: We perform an analysis of two-point galaxy clustering and galaxy bias using Subaru Hyper-Suprime Cam (HSC) data taken jointly by the Subaru Strategic Program and the University of Hawaii in the COSMOS field. The depth… read more here.
Keywords: galaxy; galaxy bias; galaxy clustering; hawaii two ... See more keywords
Linear systematics mitigation in galaxy clustering in the Dark Energy Survey Year 1 Data
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab717
Abstract: We implement a linear model for mitigating the effect of observing conditions and other sources of contamination in galaxy clustering analyses. Our treatment improves upon the fiducial systematics treatment of the Dark Energy Survey (DES)… read more here.
Keywords: cosmology; energy survey; systematics; dark energy ... See more keywords
Semi-analytic forecasts for JWST – VI. Simulated light-cones and galaxy clustering predictions
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stac2139
Abstract: In anticipation of the new era of high-redshift exploration marked by the commissioning of the James Webb Space Telescope (JWST), we present two sets of galaxy catalogues that are designed to aid the planning and… read more here.
Keywords: light cones; galaxy clustering; simulated light; semi analytic ... See more keywords
2D k-th nearest neighbor statistics: a highly informative probe of galaxy clustering
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1275
Abstract: Beyond standard summary statistics are necessary to summarize the rich information on non-linear scales in the era of precision galaxy clustering measurements. For the first time, we introduce the 2D k-th nearest neighbor (kNN) statistics… read more here.
Keywords: statistics highly; galaxy clustering; galaxy; neighbor statistics ... See more keywords
Testing gravity on large scales by combining weak lensing with galaxy clustering using CFHTLenS and BOSS CMASS
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stw3056
Abstract: We measure a combination of gravitational lensing, galaxy clustering, and redshift-space distortions called $E_G$. The quantity $E_G$ probes both parts of metric potential and is insensitive to galaxy bias and $\sigma_8$. These properties make it… read more here.
Keywords: galaxy; cmass; lensing galaxy; galaxy clustering ... See more keywords
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Single-probe measurements from DR12 galaxy clustering – towards an accurate model
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1641
Abstract: We analyse the broad-range shape of the monopole and quadrupole correlation functions of the Baryon Oscillation Spectroscopic Survey Data Release 12 (DR12) CMASS and LOWZ galaxy sample to obtain constraints on the Hubble expansion rate… read more here.
Keywords: mpc; spectroscopic survey; oscillation spectroscopic; baryon oscillation ... See more keywords
Dark Energy Survey Year 3 results: Optimizing the lens sample in a combined galaxy clustering and galaxy-galaxy lensing analysis
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.103.043503
Abstract: We investigate potential gains in cosmological constraints from the combination of galaxy clustering and galaxy-galaxy lensing by optimizing the lens galaxy sample selection using information from Dark Energy Survey (DES) Year 3 data and assuming… read more here.
Keywords: redshift; clustering galaxy; galaxy; year ... See more keywords