3.1k citations · 5.2k across the 36 of their papers we have counts for
36 papers
Small scale clustering of BOSS galaxies: dependence on luminosity, color, age, stellar mass, specific star formation rate and other properties
Zhongxu Zhai, Will J. Percival, Hong Guo
We measure and analyze galaxy clustering and the dependence on luminosity, color, age, stellar mass and specific star formation rate using Baryon Oscillation Spectroscopic Survey (…
Aemulus : Precise Predictions for Matter and Biased Tracer Power Spectra in the Presence of Neutrinos
Joseph DeRose, Nickolas Kokron, Arka Banerjee +6
We present the Aemulus simulations: a suite of 150 -body simulations with a mass resolution of $3.51\times 10^{10} \frac{Ω_{cb}}{0.3} ~ h^{-1} M_{\o…
The effective volume of supernovae samples and sample variance
Zhongxu Zhai, Will J. Percival, Zhejie Ding
The source of the tension between local SN Ia based Hubble constant measurements and those from the CMB or BAO+BBN measurements is one of the most interesting unknowns of modern co…
Isolating the linear signal when making redshift space distortion measurements
Michael J. Chapman, Zhongxu Zhai, Will J. Percival
Constraints on the linear growth rate, , using small scale redshift space distortion measurements have a significant statistical advantage over those made on large scales. Ho…
Phenomenological power spectrum models for H emission line galaxies from the Nancy Grace Roman Space Telescope
Kevin S. McCarthy, Zhongxu Zhai, Yun Wang
The High Latitude Spectroscopic Survey (HLSS) is the reference baseline spectroscopic survey for NASA's Nancy Grace Roman space telescope, measuring redshifts of M H em…
The Aemulus Project VI: Emulation of beyond-standard galaxy clustering statistics to improve cosmological constraints
Kate Storey-Fisher, Jeremy Tinker, Zhongxu Zhai +3
There is untapped cosmological information in galaxy redshift surveys in the non-linear regime. In this work, we use the AEMULUS suite of cosmological -body simulations to const…
Sample Variance for Supernovae Distance Measurements and the Hubble tension
Zhongxu Zhai, Will J. Percival
Recent local measurements of the Hubble constant made using supernovae have delivered a value that differs by 5 (statistical error) from predictions using the Cosmic Micro…
The Aemulus Project V: Cosmological constraint from small-scale clustering of BOSS galaxies
Zhongxu Zhai, Jeremy L. Tinker, Arka Banerjee +6
We analyze clustering measurements of BOSS galaxies using a simulation-based emulator of two-point statistics. We focus on the monopole and quadrupole of the redshift-space correla…
Illuminating Galaxy Evolution at Cosmic Noon with ISCEA: the Infrared Satellite for Cosmic Evolution Astrophysics
Yun Wang, Lee Armus, Andrew Benson +18
ISCEA (Infrared Satellite for Cosmic Evolution Astrophysics) is a small astrophysics mission whose Science Goal is to discover how galaxies evolved in the cosmic web of dark matter…
The High Latitude Spectroscopic Survey on the Nancy Grace Roman Space Telescope
Yun Wang, Zhongxu Zhai, Anahita Alavi +15
The Nancy Grace Roman Space Telescope will conduct a High Latitude Spectroscopic Survey (HLSS) over a large volume at high redshift, using the near-IR grism (1.0-1.93 m, $R=435-…
Simulating properties of emission line galaxies from Nancy Grace Roman Space Telescope
Zhongxu Zhai, Yun Wang, Andrew Benson +4
We simulate the emission line galaxy properties for the Nancy Grace Roman Space Telescope by creating a 4 deg galaxy mock catalog using Galacticus, a semi-analytic model (SAM…
Probing the time variation of fine structure constant using galaxy clusters and quintessence model
Zhi-E Liu, Wen-Fei Liu, Tong-Jie Zhang +2
We explore a possible time variation of the fine structure constant () using the Sunyaev-Zel'dovich effect measurements of galaxy clusters along with their X-r…
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: measurement of the growth rate of structure from the small-scale clustering of the luminous red galaxy sample
Michael J. Chapman, Faizan G. Mohammad, Zhongxu Zhai +12
We measure the small-scale clustering of the Data Release 16 extended Baryon Oscillation Spectroscopic Survey Luminous Red Galaxy sample, corrected for fibre-collisions using Pairw…
Linear bias and halo occupation distribution of emission line galaxies from Nancy Grace Roman Space Telescope
Zhongxu Zhai, Yun Wang, Andrew Benson +2
We present measurements of the linear galaxy bias of H and [OIII] emission line galaxies (ELGs) for the High Latitude Spectroscopic Survey (HLSS) of Nancy Grace Roman Space Tele…
Clustering in the Simulated H Galaxy Redshift Survey from Nancy Grace Roman Space Telescope
Zhongxu Zhai, Chia-Hsun Chuang, Yun Wang +2
We present a realistic 2000 deg H galaxy mock catalog with for the Nancy Grace Roman Space Telescope galaxy redshift survey, the High Latitude Spectroscopic Survey…
Forecasting Cosmological Constraints from the Weak Lensing Magnification of Type Ia Supernovae Measured by the Nancy Grace Roman Space Telescope
Zhongxu Zhai, Yun Wang, Dan Scolnic
The weak lensing magnification of Type Ia Supernovae (SNe Ia) is sensitive to the clustering of matter, and provides an independent cosmological probe complementary to SN Ia distan…
CMB distance priors revisited: effects of dark energy dynamics, spatial curvature, primordial power spectrum, and neutrino parameters
Zhongxu Zhai, Chan-Gyung Park, Yun Wang +1
As a physical and sufficient compression of the full CMB data, the CMB distance priors, or shift parameters, have been widely used and provide a convenient way to include CMB data…
The Aemulus Project IV: Emulating Halo Bias
Thomas McClintock, Eduardo Rozo, Arka Banerjee +6
Models of the spatial distribution of dark matter halos must achieve new levels of precision and accuracy in order to satisfy the requirements of upcoming experiments. In this work…
Prediction of H and [OIII] Emission Line Galaxy Number Counts for Future Galaxy Redshift Surveys
Zhongxu Zhai, Andrew Benson, Yun Wang +2
We perform a simulation with Galacticus, a semi-analytical galaxy formation model, to predict the number counts of H and [OIII] emitting galaxies. With a state-of-the-art N-body…
Reconstructing the weak lensing magnification distribution of Type Ia supernovae
Zhongxu Zhai, Yun Wang
Weak lensing of Type Ia supernovae (SNe Ia) is a systematic uncertainty in the use of SNe Ia as standard candles, as well as an independent cosmological probe, if the corresponding…
Robust and model-independent cosmological constraints from distance measurements
Zhongxu Zhai, Yun Wang
We present a systematic analysis of the cosmological constraints from the "Pantheon Sample" of 1048 Type Ia Supernovae (SNe Ia) in the redshift range compiled by Scoln…
The Aemulus Project III: Emulation of the Galaxy Correlation Function
Zhongxu Zhai, Jeremy L. Tinker, Matthew R. Becker +6
Using the N-body simulations of the AEMULUS Project, we construct an emulator for the non-linear clustering of galaxies in real and redshift space. We construct our model of galaxy…
The Aemulus Project II: Emulating the Halo Mass Function
Thomas McClintock, Eduardo Rozo, Matthew R. Becker +6
Existing models for the dependence of the halo mass function on cosmological parameters will become a limiting source of systematic uncertainty for cluster cosmology in the near fu…
The Aemulus Project I: Numerical Simulations for Precision Cosmology
Joseph DeRose, Risa H. Wechsler, Jeremy L. Tinker +6
The rapidly growing statistical precision of galaxy surveys has lead to a need for ever-more precise predictions of the observables used to constrain cosmological and galaxy format…