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astro-ph.CO2019
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…
astro-ph.CO2019
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…