442 citations · 2.5k across the 33 of their papers we have counts for
5 papers · 1 filter
Primordial black holes and gravitational waves from resonant amplification during inflation
Zihan Zhou, Jie Jiang, Yi-Fu Cai +2
We present a new realization of the resonant production of primordial black holes as well as gravitational waves in a two-stage inflation model consisting of a scalar field ϕwith a…
NANOGrav Hints on Planet-Mass Primordial Black Holes
Guillem Domènech, Shi Pi
Recently, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) claimed the detection of a stochastic common-spectrum process of the pulsar timing array (PTA)…
Measuring the gravitomagnetic distortion from rotating halos I: methods
Chengfeng Tang, Pierre Zhang, Wentao Luo +3
Source galaxy images are distorted not only by a static gravitational potential, but also by frame-dragging induced by massive rotating objects like clusters of galaxies. Such effe…
Induced gravitational waves as a probe of thermal history of the universe
Guillem Domènech, Shi Pi, Misao Sasaki
The scalar perturbation induced gravitational waves are a probe of the primordial density perturbation spectrum on small scales. In this paper, we show that they can also probe the…
Gravitational Waves Induced by Scalar Perturbations with a Lognormal Peak
Shi Pi, Misao Sasaki
We study the stochastic gravitational wave (GW) background induced by the primordial scalar perturbation with the spectrum having a lognormal peak of width at . We deriv…