41 citations · 112 across the 4 of their papers we have counts for
5 papers
Weak lensing reconstruction through cosmic magnification I: a minimal variance map reconstruction
Xinjuan Yang, Pengjie Zhang
We present a concept study on weak lensing map reconstruction through the cosmic magnification effect in galaxy number density distribution. We propose a minimal variance linear es…
The dark flow induced small scale kinetic Sunyaev Zel'dovich effect
Pengjie Zhang
Recently Kashlinsky et al. 2008, 2010 reported a discovery of a km/ bulk flow of the universe out to , through the dark flow induced CMB dipole in direc…
A proposal on the galaxy intrinsic alignment self-calibration in weak lensing surveys
Pengjie Zhang
The galaxy intrinsic alignment causes the galaxy ellipticity-ellipticity power spectrum between two photometric redshifts to decrease faster with respect to the redshift separation…
Self calibration of photometric redshift scatter in weak lensing surveys
Pengjie Zhang, Ue-Li Pen, Gary Bernstein
Photo-z errors, especially catastrophic errors, are a major uncertainty for precision weak lensing cosmology. We find that the shear-(galaxy number) density and density-density cro…
Self calibration of gravitational shear-galaxy intrinsic ellipticity correlation in weak lensing surveys
Pengjie Zhang
The galaxy intrinsic alignment is a severe challenge to precision cosmic shear measurement. We propose to self-calibrate the induced gravitational shear-galaxy intrinsic ellipticit…