6 papers
HIcosmo: a differentiable JAX-based framework for cosmology inference
Jing-Zhao Qi, Jing-Fei Zhang, Xin Zhang
The Stage IV cosmological surveys, such as Euclid, LSST, DESI, and SKA, will deliver observational data of unprecedented volume, calling for efficient and reliable inference tools.…
Unveiling the spectral morphological division of fast radio bursts with CHIME/FRB Catalog 2
Wan-Peng Sun, Yin-Long Cao, Yong-Kun Zhang +7
Fast radio bursts (FRBs) are commonly classified into repeating and apparently nonrepeating sources, yet whether this distinction reflects intrinsically different physical populati…
A Practical Framework for Estimating the Repetition Likelihood of Fast Radio Bursts from Spectral Morphology
Wan-Peng Sun, Yong-Kun Zhang, Ji-Guo Zhang +6
The repeating behavior of fast radio bursts (FRBs) is regarded as a key clue to understanding their physical origin, yet reliably distinguishing repeaters from apparent non-repeate…
Combining strongly lensed and unlensed fast radio bursts: To be a more precise late-universe probe
Ji-Guo Zhang, Yi-Fan Jiang, Ze-Wei Zhao +3
The Macquart relation and time-delay cosmography are now two promising ways to fast radio burst (FRB) cosmology. In this work, we propose a joint method that combines strongly lens…
Exploring the Key Features of Repeating Fast Radio Bursts with Machine Learning
Wan-Peng Sun, Ji-Guo Zhang, Yichao Li +4
Fast radio bursts (FRBs) are enigmatic high-energy events with unknown origins, which are observationally divided into two categories, i.e., repeaters and non-repeaters. However, t…
Testing the Cosmic Distance Duality Relation Using Strong Gravitational Lensing Time Delays and Type Ia Supernovae
Jing-Zhao Qi, Yi-Fan Jiang, Wan-Ting Hou +1
We present a comprehensive test of the cosmic distance duality relation (DDR) using a combination of strong gravitational lensing (SGL) time delay measurements and Type Ia supernov…