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12 papers · 2 filters
Mitigating the Impact of the DESI Fiber Assignment on Galaxy Clustering
Angela Burden, Nikhil Padmanabhan, Robert N. Cahn +2
We present a simple strategy to mitigate the impact of an incomplete spectroscopic redshift galaxy sample as a result of fiber assignment and survey tiling. The method has been des…
Information Content of the Angular Multipoles of Redshift-Space Galaxy Bispectrum
Praful Gagrani, Lado Samushia
The redshift-space bispectrum (three point statistics) of galaxies depends on the expansion rate, the growth rate, and geometry of the Universe, and hence can be used to measure ke…
Unbiased contaminant removal for 3D galaxy power spectrum measurements
Benedict Bahr-Kalus, Will J Percival, David Bacon +1
We assess and develop techniques to remove contaminants when calculating the 3D galaxy power spectrum. We separate the process into three separate stages: (i) removing the contamin…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
Shadab Alam, Metin Ata, Stephen Bailey +69
We present cosmological results from the final galaxy clustering data set of the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. Our combined gal…
The Clustering of Galaxies in the Completed SDSS-III Baryon Oscillation Spectroscopic Survey: single-probe measurements from DR12 galaxy clustering -- towards an accurate model
Chia-Hsun Chuang, Marcos Pellejero-Ibanez, Sergio Rodríguez-Torres +27
We analyse the broad-range shape of the monopole and quadrupole correlation functions of the BOSS Data Release 12 (DR12) CMASS and LOWZ galaxy sample to obtain constraints on the H…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the configuration-space clustering wedges
Ariel G. Sanchez, Roman Scoccimarro, Martin Crocce +21
We explore the cosmological implications of anisotropic clustering measurements in configuration space of the final galaxy samples from Data Release 12 of the SDSS-III Baryon Oscil…
Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
Omer Farooq, Foram Madiyar, Sara Crandall +1
We compile an updated list of 38 measurements of the Hubble parameter between redshifts and use them to place constraints on model parameters of cons…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Angular clustering tomography and its cosmological implications
Salvador Salazar-Albornoz, Ariel G. Sanchez, Jan Niklas Grieb +17
We investigate the cosmological implications of studying galaxy clustering using a tomographic approach applied to the final BOSS DR12 galaxy sample, including both auto- and cross…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the Fourier space wedges of the final sample
Jan Niklas Grieb, Ariel G. Sánchez, Salvador Salazar-Albornoz +25
We extract cosmological information from the anisotropic power spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the conce…
Determining the Hubble constant from Hubble parameter measurements
Yun Chen, Suresh Kumar, Bharat Ratra
We use 28 Hubble parameter, , measurements at intermediate redshifts to determine the present-day Hubble constant in four cosmological models. We…
Optimal Weights For Measuring Redshift Space Distortions in Multi-tracer Galaxy Catalogues
David W. Pearson, Lado Samushia, Praful Gagrani
Since the volume accessible to galaxy surveys is fundamentally limited, it is extremely important to analyse available data in the most optimal fashion. One way of enhancing the co…
Constraints on non-flat cosmologies with massive neutrinos after Planck 2015
Yun Chen, Bharat Ratra, Marek Biesiada +2
We investigate two dark energy cosmological models (i.e., the CDM and CDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatiall…