109 citations · 212 across the 3 of their papers we have counts for
6 papers
Energy spectrum of gravitational waves
Rong-Gen Cai, Xing-Yu Yang, Long Zhao
The energy spectrum of gravitational waves (GWs), which depicts the energy of GWs per unit volume of space per logarithmic frequency interval normalized to the critical density of…
The Gravitational-Wave Physics II: Progress
Ligong Bian, Rong-Gen Cai, Shuo Cao +15
It has been a half-decade since the first direct detection of gravitational waves, which signifies the coming of the era of the gravitational-wave astronomy and gravitational-wave…
Constraints on a mixed model of dark matter particles and primordial black holes from the Galactic 511 keV line
Rong-Gen Cai, Yu-Chen Ding, Xing-Yu Yang +1
The galactic 511 keV gamma-ray line has been observed since 1970's, and was identified as the result of electron-positron annihilation, but the origin of such positrons is still no…
Primordial black holes and gravitational waves from parametric amplification of curvature perturbations
Rong-Gen Cai, Zong-Kuan Guo, Jing Liu +2
We investigate a new mechanism to create large curvature perturbations on small scales due to parameter resonance in a single-field inflationary model with a small periodic structu…
Pulsar Timing Array Constraints on the Induced Gravitational Waves
Rong-Gen Cai, Shi Pi, Shao-Jiang Wang +1
If the black holes detected by LIGO/VIRGO are primordial black holes (PBHs) sourcing from a large primordial curvature perturbation on small scales, the corresponding induced gravi…
Resonant multiple peaks in the induced gravitational waves
Rong-Gen Cai, Shi Pi, Shao-Jiang Wang +1
We identify analytically a multiple-peak structure in the energy-density spectrum of induced gravitational waves (GWs) generated at second-order from a primordial scalar perturbati…