3 papers
astro-ph.CO2025
Probing the Bounce Energy Scale in Bouncing Cosmologies with Pulsar Timing Arrays
Junrong Lai, Changhong Li
In this work we constrain the bounce energy scale in a generic framework of bouncing cosmologies using the nanohertz stochastic gravitational-wave backgroun…
astro-ph.CO2025
Accelerated Bayesian Inference for Pulsar Timing Arrays: Normalizing Flows for Rapid Model Comparison Across Stochastic Gravitational-Wave Background Sources
Junrong Lai, Changhong Li
The recent detection of nanohertz stochastic gravitational-wave backgrounds (SGWBs) by pulsar timing arrays (PTAs) promises unique insights into astrophysical and cosmological orig…
astro-ph.CO2025
Gravitational Wave Constraints on the Bouncing Energy Scale of Big Bounce Cosmology
Changhong Li
Big bounce cosmology provides a solution to the Universe's initial singularity, and stochastic gravitational wave background (SGWB) searches offer a promising avenue for testing th…