55 citations · 281 across the 12 of their papers we have counts for
12 papers
The Jiao Tong University Spectroscopic Telescope Project
JUST Team, Chengze Liu, Ying Zu +28
The Jiao Tong University Spectroscopic Telescope (JUST) is a 4.4-meter f/6.0 segmentedmirror telescope dedicated to spectroscopic observations. The JUST primary mirror is composed…
Expansion series of the pairwise velocity generating function and its implications on redshift space distortion modeling
Junde Chen, Pengjie Zhang, Yi Zheng
The pairwise velocity generating function has deep connection with both the pairwise velocity probability distribution function and modeling of redshift space distortion (RSD).…
Quantification of the multi-streaming effect in Redshift Space Distortion
Yi Zheng, Pengjie Zhang, Minji Oh
Both multi-streaming (random motion) and bulk motion cause the Finger-of-God (FoG) effect in redshift space distortion (RSD). We apply a direct measurement of the multi-streaming e…
Kriging interpolating cosmic velocity field. II. Taking anistropies and multistreaming into account
Yu Yu, Jun Zhang, Yipeng Jing +1
Measuring the volume-weighted peculiar velocity statistics from inhomogeneously and sparsely distributed galaxies/halos, by existing velocity assignment methods, suffers from a sig…
Kriging Interpolating Cosmic Velocity Field
Yu Yu, Jun Zhang, Yipeng Jing +1
[abridged] Volume-weighted statistics of large scale peculiar velocity is preferred by peculiar velocity cosmology, since it is free of uncertainties of galaxy density bias entangl…
Determination of the large scale volume weighted halo velocity bias in simulations
Yi Zheng, Pengjie Zhang, Yipeng Jing
A profound assumption in peculiar velocity cosmology is at sufficiently large scales, where is the volume weighted halo(galaxy) velocity bias with respect to the matt…
Sampling Artifact in Volume Weighted Velocity Measurement.--- II. Detection in simulations and comparison with theoretical modelling
Yi Zheng, Pengjie Zhang, Yipeng Jing
Measuring the volume weighted velocity power spectrum suffers from a severe systematic error, due to imperfect sampling of the velocity field from inhomogeneous distribution of dar…
Sampling Artifact in Volume Weighted Velocity Measurement.--- I. Theoretical Modelling
Pengjie Zhang, Yi Zheng, Yipeng Jing
Cosmology based on large scale peculiar velocity preferes volume weighted velocity statistics. However, measuring the volume weighted velocity statistics from inhomogeneously distr…
Peculiar Velocity Decomposition, Redshift Space Distortion and Velocity Reconstruction in Redshift Surveys. II. Dark Matter Velocity Statistics
Yi Zheng, Pengjie Zhang, Yipeng Jing +2
Massive spectroscopic redshift surveys open a promising window to accurately measure peculiar velocity at cosmological distances through redshift space distortion (RSD). In paper I…
Peculiar Velocity Decomposition, Redshift Space Distortion and Velocity Reconstruction in Redshift Surveys - I. The Methodology
Pengjie Zhang, Jun Pan, Yi Zheng
Massive spectroscopic surveys will measure the redshift space distortion (RSD) induced by galaxy peculiar velocity to unprecedented accuracy. We develop a new method to improve the…
The kinetic SZ tomography with spectroscopic redshift surveys
Jiawei Shao, Pengjie Zhang, Weipeng Lin +2
The kinetic Sunyaev Zel'dovich effect (kSZ) effect is a potentially powerful probe to the missing baryons. However, the kSZ signal is overwhelmed by various contaminations and the…
The thermal SZ tomography
Jiawei Shao, Pengjie Zhang, Weipeng Lin +1
The thermal Sunyaev-Zel'dovich (tSZ) effect directly measures the thermal pressure of free electrons integrated along the line of sight and thus contains valuable information on th…