Year: 2025
Type: article
Abstract: We introduce a novel method to constrain the Hubble constant (H 0) by combining fast radio bursts (FRBs) and their persistent radio sources (PRSs) through the observationally validated Yang relation, L ν ∝ ∣RM∣, which links PRS luminosity to the rotation measure of the associated FRB. Using a mock sample of PRSs, we demonstrate that the Yang relation can help to unravel the degeneracies among H 0, baryon density parameter Ω b , and baryon fraction in the intergalactic medium f IGM in the traditional approach of using dispersion measure only to perform cosmological analyses. Our method employs a two-stage Markov Chain Monte Carlo analysis to constrain H 0. Using the available data of six observed PRS systems, we obtain a preliminary constraint of H 0 = 75 ± 30 km s−1 Mpc−1. We briefly discuss possible refinements of the method by reducing residual degeneracies and systematic uncertainties using future data and physical modeling. Our results indicate that the Yang relation can potentially become a new probe for performing FRB cosmology.
Authors: Zi-Liang 子良 Zhang 张, Bing 冰 Zhang 张
Institution: University of Nevada, Las Vegas
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,400
Awards: G1722272692, G7507466426
OpenAlex ID: W4410049558