340 citations · 1.1k across the 21 of their papers we have counts for
21 papers
A-priori Validation of Subgrid-scale Models for Astrophysical Turbulence
Chia-Yu Hu, Chi-Ting Chiang
We perform a-priori validation tests of subgrid-scale (SGS) models for the turbulent transport of momentum, energy and passive scalars. To this end, we conduct two sets of high-res…
The Quijote simulations
Francisco Villaescusa-Navarro, ChangHoon Hahn, Elena Massara +26
The Quijote simulations are a set of 44,100 full N-body simulations spanning more than 7,000 cosmological models in the hyperplane.…
Predicting CMB dust foreground using galactic 21 cm data
Guangyu Zhang, Chi-Ting Chiang, Chris Sheehy +2
Understanding large-angular-scale galactic foregrounds is crucial for future CMB experiments aiming to detect -mode polarization from primordial gravitational waves. Traditional…
Inferences of in presence of a non-standard recombination
Chi-Ting Chiang, Anže Slosar
Measurements of the Hubble parameter from the distance ladder are in tension with indirect measurements based on the cosmic microwave background (CMB) data and the inverse distance…
First detection of scale-dependent linear halo bias in -body simulations with massive neutrinos
Chi-Ting Chiang, Marilena LoVerde, Francisco Villaescusa-Navarro
Using -body simulations with massive neutrino density perturbations, we detect the scale-dependent linear halo bias with high significance. This is the first time that this effe…
Probing Decoupling in Dark Sectors with the Cosmic Microwave Background
Gongjun Choi, Chi-Ting Chiang, Marilena LoVerde
The acoustic peaks in the angular power spectrum of cosmic microwave background (CMB) temperature and polarization anisotropies play an important role as a probe of the nature of n…
Power spectrum in the presence of large-scale overdensity and tidal fields: breaking azimuthal symmetry
Chi-Ting Chiang, Anže Slosar
We consider the power spectrum of a biased tracer observed in a finite volume in the presence of a large-scale overdensity and tidal fields. Expanding both the observed power spect…
Scale-dependent bias and bispectrum in neutrino separate universe simulations
Chi-Ting Chiang, Wayne Hu, Yin Li +1
Cosmic background neutrinos have a large velocity dispersion, which causes the evolution of long-wavelength density perturbations to depend on scale. This scale-dependent growth le…
The Lyman- power spectrum - CMB lensing convergence cross-correlation
Chi-Ting Chiang, Anže Slosar
We investigate the three-point correlation between the Lyman- forest and the CMB weak lensing () expressed as the cross-correlation between the CMB weak lensing field…
Generating Log-normal Mock Catalog of Galaxies in Redshift Space
Aniket Agrawal, Ryu Makiya, Chi-Ting Chiang +3
We present a public code to generate a mock galaxy catalog in redshift space assuming a log-normal probability density function (PDF) of galaxy and matter density fields. We draw g…
Response approach to the squeezed-limit bispectrum: application to the correlation of quasar and Lyman- forest power spectrum
Chi-Ting Chiang, Agnieszka M. Cieplak, Fabian Schmidt +1
The squeezed-limit bispectrum, which is generated by nonlinear gravitational evolution as well as inflationary physics, measures the correlation of three wavenumbers, in the config…
The halo squeezed-limit bispectrum with primordial non-Gaussianity: a power spectrum response approach
Chi-Ting Chiang
Modeling the nonlinearity of the halo bispectrum remains a major challenge in modern cosmology, in particular for ongoing and upcoming large-scale structure observations that are p…
Quintessential Scale Dependence from Separate Universe Simulations
Chi-Ting Chiang, Yin Li, Wayne Hu +1
By absorbing fluctuations into a local background, separate universe simulations provide a powerful technique to characterize the response of small-scale observables to the long-wa…
Separating the Universe into the Real and Fake
Wayne Hu, Chi-Ting Chiang, Yin Li +1
The separate universe technique provides a means of establishing consistency relations between short wavelength observables and the long wavelength matter density fluctuations with…
Position-dependent power spectrum: a new observable in the large-scale structure
Chi-Ting Chiang
We present a new observable, position-dependent power spectrum, to measure the large-scale structure bispectrum in the squeezed configuration, where one wavenumber is much smaller…
Surveying Galaxy Proto-clusters in Emission: A Large-scale Structure at z=2.44 and the Outlook for HETDEX
Yi-Kuan Chiang, Roderik A. Overzier, Karl Gebhardt +12
Galaxy proto-clusters at z >~ 2 provide a direct probe of the rapid mass assembly and galaxy growth of present day massive clusters. Because of the need of precise galaxy redshifts…
Position-dependent correlation function from the SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 10 CMASS Sample
Chi-Ting Chiang, Christian Wagner, Ariel G. Sánchez +2
We report on the first measurement of the three-point function with the position-dependent correlation function from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) Dat…
The angle-averaged squeezed limit of nonlinear matter N-point functions
Christian Wagner, Fabian Schmidt, Chi-Ting Chiang +1
We show that in a certain, angle-averaged squeezed limit, the -point function of matter is related to the response of the matter power spectrum to a long-wavelength density pert…
Separate Universe Simulations
Christian Wagner, Fabian Schmidt, Chi-Ting Chiang +1
The large-scale statistics of observables such as the galaxy density are chiefly determined by their dependence on the local coarse-grained matter density. This dependence can be m…
Galaxy redshift surveys with sparse sampling
Chi-Ting Chiang, Philipp Wullstein, Donghui Jeong +16
Survey observations of the three-dimensional locations of galaxies are a powerful approach to measure the distribution of matter in the universe, which can be used to learn about t…
Dark Matter Detection with Polarized Detectors
Chi-Ting Chiang, Marc Kamionkowski, Gordan Z. Krnjaic
We consider the prospects to use polarized dark-matter detectors to discriminate between various dark-matter models. If WIMPs are fermions and participate in parity-violating inter…