303 citations · 1k across the 17 of their papers we have counts for
17 papers
Radial velocity statistics of cosmic voids as a probe of interacting dark energy
Kin Ho Luo, Ming-chung Chu, Kwan Chuen Chan +1
Due to their vast sizes and extremely low densities, the dynamics of cosmic voids are largely decoupled from complex, small-scale baryonic physics and are highly sensitive to the b…
Constraint of Void Bias on Primordial non-Gaussianity
Kwan Chuen Chan, Nico Hamaus, Matteo Biagetti
We study the large-scale bias parameter of cosmic voids with primordial non-Gaussian (PNG) initial conditions of the local type. In this scenario, the dark matter halo bias exhibit…
Bispectrum Supersample Covariance
Kwan Chuen Chan, Azadeh Moradinezhad Dizgah, Jorge Noreña
Modes with wavelengths larger than the survey window can have significant impact on the covariance within the survey window. The supersample covariance has been recognized as an im…
Shot noise and biased tracers: a new look at the halo model
Dimitry Ginzburg, Vincent Desjacques, Kwan Chuen Chan
Shot noise is an important ingredient to any measurement or theoretical modeling of discrete tracers of the large scale structure. Recent work has shown that the shot noise in the…
Consistency relations for the Lagrangian halo bias and their implications
Kwan Chuen Chan, Ravi K. Sheth, Roman Scoccimarro
The protohalo patches from which halos form are defined by a number of constraints imposed on the Lagrangian dark matter density field. Each of these constraints contributes to bia…
Assessment of the Information Content of the Power Spectrum and Bispectrum
Kwan Chuen Chan, Linda Blot
The covariance matrix of the matter and halo power spectrum and bispectrum are studied. Using a large suite of simulations, we find that the non-Gaussianity in the covariance is si…