38 citations · 89 across the 9 of their papers we have counts for
10 papers
Efficient computation of the galaxy angular bispectrum in redshift space
Zucheng Gao, Zvonimir Vlah, Anthony Challinor
Efficient computation of the angular bispectrum is an essential part of modelling large-scale structure observations, but it still remains an extremely challenging task. In this wo…
Testing parity with composite-field spectra of BOSS and DESI luminous red galaxies
Zucheng Gao, Marina S. Cagliari, Azadeh Moradinezhad Dizgah +1
Detection of parity violation on cosmological scales would have profound implications for fundamental physics. Motivated in part by recent measurements of parity-odd four-point cor…
Disentangling Target Lines from Interlopers and Continuum with Neural Networks: A SPHEREx Intensity Mapping Case Study
Marina S. Cagliari, Zucheng Gao, Azadeh Moradinezhad Dizgah
Line-intensity mapping (LIM) traces the large-scale distribution of matter by measuring fluctuations in aggregate line emission from unresolved galaxies and the intergalactic mediu…
Parity in Composite-Field Galaxy Correlators
Zucheng Gao, Azadeh Moradinezhad Dizgah, Zvonimir Vlah
Detecting parity violation on cosmological scales would provide a striking clue to new physics. Large-scale structure offers the raw statistical power -- many three-dimensional mod…
An Opacity-Free Method of Testing the Cosmic Distance Duality Relation Using Strongly Lensed Gravitational Wave Signals
Shun-Jia Huang, En-Kun Li, Jian-dong Zhang +4
The cosmic distance duality relation (CDDR), expressed as DL(z) = (1 + z)2DA(z), plays an important role in modern cosmology. In this paper, we propose a new method of testing CDDR…
Flat-sky Angular Power Spectra Revisited
Zucheng Gao, Zvonimir Vlah, Anthony Challinor
We revisit the flat-sky approximation for evaluating the angular power spectra of projected random fields by retaining information about the correlations along the line of sight. W…
On the asymptotic connection between full- and flat-sky angular correlators
Zucheng Gao, Alvise Raccanelli, Zvonimir Vlah
We investigate the connection between the full- and flat-sky angular power spectra. First, we revisit this connection established on the geometric and physical grounds, namely that…
Measuring the Hubble Constant Using Strongly Lensed Gravitational Wave Signals
Shun-Jia Huang, Yi-Ming Hu, Xian Chen +4
The measurement of the Hubble constant plays an important role in the study of cosmology. In this letter, we propose a new method to constrain the Hubble constant using the s…
Detection of Cosmic Magnification via Galaxy Shear -- Galaxy Number Density Correlation from HSC Survey Data
Xiangkun Liu, Dezi Liu, Zucheng Gao +5
We propose a novel method to detect cosmic magnification signals by cross-correlating foreground convergence fields constructed from galaxy shear measurements with background galax…
A Higher Probability of Detecting Lensed Supermassive Black Hole Binaries by LISA
Zucheng Gao, Xian Chen, Yi-Ming Hu +2
Gravitational lensing of gravitational waves (GWs) is a powerful probe of the matter distribution in the universe. Here we revisit the wave-optics effects induced by dark matter (D…