Showing 2016 · astro-ph.COShow all

39 papers · 2 filters

astro-ph.CO2016★ 70 cited

Projection effects in the strong lensing study of subhaloes

Ran Li, Carlos S. Frenk, Shaun Cole +2

The defining characteristic of the cold dark matter (CDM) hypothesis is the presence of a very large number of low-mass haloes, too small to have made a visible galaxy. Other hypot…

astro-ph.CO2016★ 21 cited

IslandFAST: A Semi-numerical Tool for Simulating the Late Epoch of Reionization

Yidong Xu, Bin Yue, Xuelei Chen

We present the algorithm and main results of our semi-numerical simulation, islandFAST, which is developed from the 21cmFAST and designed for the late stage of reionization. The is…

astro-ph.CO2016★ 59 cited

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modified gravity

Eva-Maria Mueller, Will Percival, Eric Linder +4

We use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital S…

astro-ph.CO2016★ 46 cited

Clustering of quasars in the First Year of the SDSS-IV eBOSS survey: Interpretation and halo occupation distribution

Sergio A. Rodríguez-Torres, Johan Comparat, Francisco Prada +10

In current and future surveys, quasars play a key role. The new data will extend our knowledge of the Universe as it will be used to better constrain the cosmological model at reds…

astro-ph.CO2016★ 29 cited

The SDSS-IV eBOSS: emission line galaxy catalogues at z=0.8 and study of systematic errors in the angular clustering

T. Delubac, A. Raichoor, J. Comparat +17

We present two wide-field catalogs of photometrically-selected emission line galaxies (ELGs) at z=0.8 covering about 2800 deg^2 over the south galactic cap. The catalogs were obtai…

astro-ph.CO2016★ 43 cited

Nonlinear reconstruction

Hong-Ming Zhu, Yu Yu, Ue-Li Pen +2

We present a direct approach to nonparametrically reconstruct the linear density field from an observed nonlinear map. We solve for the unique displacement potential consistent wit…

astro-ph.CO2016★ 53 cited

Speeding up -body simulations of modified gravity: Chameleon screening models

Sownak Bose, Baojiu Li, Alexandre Barreira +5

We describe and demonstrate the potential of a new and very efficient method for simulating certain classes of modified gravity theories, such as the widely studied gravity…

astro-ph.CO2016★ 60 cited

Cosmological neutrino simulations at extreme scale

J. D. Emberson, Hao-Ran Yu, Derek Inman +8

Constraining neutrino mass remains an elusive challenge in modern physics. Precision measurements are expected from several upcoming cosmological probes of large-scale structure. A…

astro-ph.CO2016★ 34 cited

Measurement of the Cold Dark Matter-Neutrino Dipole in the TianNu Simulation

Derek Inman, Hao-Ran Yu, Hong-Ming Zhu +6

Measurements of neutrino mass in cosmological observations rely on two point statistics that are hindered by significant degeneracies with the optical depth and galaxy bias. The re…

astro-ph.CO2016★ 12 cited

Nonlinear -mode clustering in Lagrangian space

Hao-Ran Yu, Ue-Li Pen, Hong-Ming Zhu

We study the nonlinear -mode clustering in Lagrangian space by using large scale structure -body simulations and use the displacement field information in Lagrangian space to…

astro-ph.CO2016★ 30 cited

Recovering lost 21 cm radial modes via cosmic tidal reconstruction

Hong-Ming Zhu, Ue-Li Pen, Yu Yu +1

21 cm intensity mapping has emerged as a promising technique to map the large-scale structure of the Universe, at redshifts from 1 to 10. Unfortunately, many of the key cross-c…

astro-ph.CO2016★ 22 cited

Density-dependent clustering: I. Pulling back the curtains on motions of the BAO peak

Mark C. Neyrinck, István Szapudi, Nuala McCullagh +3

The most common statistic used to analyze large-scale structure surveys is the correlation function, or power spectrum. Here, we show how `slicing' the correlation function on loca…

astro-ph.CO2016★ 2 cited

The Effect of Corner Modes in the Initial Conditions of Cosmological Simulations

B. Falck, N. McCullagh, M. C. Neyrinck +2

In view of future high-precision large-scale structure surveys, it is important to quantify the percent and subpercent level effects in cosmological -body simulations from which…

astro-ph.CO2016★ 39 cited

Differential Neutrino Condensation onto Cosmic Structure

Hao-Ran Yu, J. D. Emberson, Derek Inman +12

Astrophysical techniques have pioneered the discovery of neutrino mass properties. Current cosmological observations give an upper bound on neutrino masses by attempting to disenta…

astro-ph.CO2016★ 21 cited

HIFLUGCS: X-ray luminosity -- dynamical mass relation and its implications for mass calibrations with the SPIDERS and 4MOST surveys

Yu-Ying Zhang, Thomas H. Reiprich, Peter Schneider +7

We present the X-ray luminosity (L) versus dynamical mass (M) relation for 63 nearby clusters in the HIFLUGCS. The luminosity measurements are obtained based on ~1.3 Ms of clean XM…

astro-ph.CO2016★ 84 cited

Constraining Gravity Theory Using Weak Lensing Peak Statistics from the Canada-France-Hawaii-Telescope Lensing Survey

Xiangkun Liu, Baojiu Li, Gong-Bo Zhao +8

In this Letter, we report the observational constraints on the Hu-Sawicki theory derived from weak lensing peak abundances, which are closely related to the mass function of…

astro-ph.CO2016★ 18 cited

Galaxy-Galaxy Weak Lensing Measurements from SDSS: I. Image Processing and Lensing signals

Wentao Luo, Xiaohu Yang, Jun Zhang +11

As the first paper in a series on the study of the galaxy-galaxy lensing from Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we present our image processing pipeline that corr…

astro-ph.CO2016★ 3.1k cited

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…

astro-ph.CO2016★ 62 cited

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…

astro-ph.CO2016★ 205 cited

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…

astro-ph.CO2016★ 46 cited

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: combining correlated Gaussian posterior distributions

Ariel G. Sanchez, Jan Niklas Grieb, Salvador Salazar-Albornoz +17

The cosmological information contained in anisotropic galaxy clustering measurements can often be compressed into a small number of parameters whose posterior distribution is well…

astro-ph.CO2016★ 197 cited

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in configuration space

Yuting Wang, Gong-Bo Zhao, Chia-Hsun Chuang +20

We perform a tomographic baryon acoustic oscillations analysis using the two-point galaxy correlation function measured from the combined sample of BOSS DR12, which covers the reds…

astro-ph.CO2016★ 72 cited

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in Fourier space

Gong-Bo Zhao, Yuting Wang, Shun Saito +25

We perform a tomographic baryon acoustic oscillations (BAO) analysis using the monopole, quadrupole and hexadecapole of the redshift-space galaxy power spectrum measured from the p…

astro-ph.CO2016★ 276 cited

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Observational systematics and baryon acoustic oscillations in the correlation function

Ashley J. Ross, Florian Beutler, Chia-Hsun Chuang +27

We present baryon acoustic oscillation (BAO) scale measurements determined from the clustering of 1.2 million massive galaxies with redshifts 0.2 < z < 0.75 distributed over 9300 s…