4 papers
How to augment cosmic shear measurements with radio polarimetry of galaxies?
Liang Dai, Junwu Huang, Weichen Winston Yin +2
The integral polarization of spiral galaxies in the radio band has been proposed as a new tracer of the intrinsic galaxy shape that augments lensing shear measurements. We revisit…
Polarization-shape alignment of IllustrisTNG star-forming galaxies
Rui Zhou, Liang Dai, Junwu Huang +2
In star-forming disk galaxies, the radio continuum emission (-GHz) powered by star formation has an integrated polarization direction imperfectly aligned with the apparent…
Periodic Cosmic String Formation and Dynamics
Michael A. Fedderke, Junwu Huang, Nils Siemonsen
We study string formation and dynamics in a scalar field theory with a global symmetry. If a scalar field is initially displaced from the minimum of a wine-bottle poten…
A New Probe of Cosmic Birefringence Using Galaxy Polarization and Shapes
Weichen Winston Yin, Liang Dai, Junwu Huang +2
We propose a novel statistical method to measure cosmic birefringence and demonstrate its power in probing parity violation due to axions. Exploiting an empirical correlation betwe…