98 citations · 460 across the 14 of their papers we have counts for
14 papers
Baryonic feedback suppression of the matter power spectrum: a three-parameter fitting formula and its single-parameter reduction
Pengjie Zhang
Baryonic feedback can suppress matter clustering by at /Mpc and , and is therefore a major source of systematic errors in weak lensing cosmology. We…
Observational Consequences of Dark Energy Decay
Ue-Li Pen, Pengjie Zhang
We consider the generic scenario of dark energy which arises through the latent heat of a hidden sector first order cosmological phase transition. This field could account for the…
Mapping dark matter with cosmic magnification
Pengjie Zhang, Ue-Li Pen
We develop a new tool to generate statistically precise dark matter maps from the cosmic magnification of galaxies with distance estimates. We show how to overcome the intrinsic cl…
Precision measurement of cosmic magnification from 21 cm emitting galaxies
Pengjie Zhang, Ue-Li Pen
We show how precision lensing measurements can be obtained through the lensing magnification effect in high redshift 21cm emission from galaxies. Normally, cosmic magnification mea…
The intergalactic medium temperature and Compton y parameter
Pengjie Zhang, Ue-Li Pen, Hy Trac
(Abridged) The precision modeling of the thermal Sunyaev Zeldovich (SZ) effect and future high accuracy measurements will provide a powerful way to constrain the thermal history of…
Optimal Weak Lensing Skewness Measurements
Tong-Jie Zhang, Ue-Li Pen, Pengjie Zhang +1
Weak lensing measurements are entering a precision era to statistically map the distribution of matter in the universe. The most common measurement has been of the variance of the…