4 papers
Extracting HI Astrophysics from Interferometric Intensity Mapping
Zhaoting Chen, Laura Wolz, Marta Spinelli +1
We present a new halo model of neutral hydrogen (HI) calibrated to galaxy formation simulations at redshifts and that we employ to investigate the constrainin…
New test on general relativity and torsional gravity from galaxy-galaxy weak lensing surveys
Zhaoting Chen, Wentao Luo, Yi-Fu Cai +1
We use galaxy-galaxy weak lensing data to perform a novel test on general relativity (GR) and torsional gravity. In particular, we impose strong constraints using the torsio…
Testing the scale-dependent hemispherical asymmetry with the 21-cm power spectrum from the epoch of reionization
Botao Li, Zhaoting Chen, Yi-Fu Cai +1
Hemispherical power asymmetry has emerged as a new challenge to cosmology in early universe. While the cosmic microwave background (CMB) measurements indicated the asymmetry amplit…
Stages of Reionization as revealed by the Minkowski Functionals
Zhaoting Chen, Yidong Xu, Yougang Wang +1
We study the evolution of the hydrogen ionization field during the epoch of reionization (EoR) using semi-numerical simulations. By calculating the Minkowski functionals (MFs) of t…