Revised Constraints on the fast radio burst population from the first CHIME/FRB catalog

Abstract

In this paper, we investigate the FRB population using the first CHIME/FRB catalog. We first reconstruct the extragalactic dispersion measure -- redshift relation ($\mathrm{D}{\mathrm{M}}_{\mathrm{E}}-z$ relation) from well-localized FRBs, then use it to infer redshift and isotropic energy of the first CHIME/FRB catalog. The intrinsic energy distribution is modeled by the power law with an exponential cutoff, and the selection effect of the CHIME telescope is modeled by a two-parametric function of specific fluence. For the intrinsic redshift distribution, the star formation history (SFH) model, as well as other five SFH-related models are considered. We construct the joint likelihood of fluence, energy and redshift, and all the free parameters are constrained simultaneously using Bayesian inference method. The Bayesian information criterion (BIC) is used to choose the model that best matches the observational data. For comparison, we fit our models with two data samples, i.e. the Full sample and the Gold sample. The power-law index and cutoff energy are tightly constrained to be $1.8\lesssim \alpha \lesssim 1.9$ and $\log (E_c/\mathrm{erg})\approx 42$, which are almost independent of the redshift distribution model and the data sample we choose. The parameters involving the selection effect strongly depends on the data sample, but are insensitive to the redshift distribution model. According to BIC, the pure SFH model is strongly disfavored by both the Full sample and Gold sample. For the rest five SFH-related redshift distribution models, most of them can match the data well if the parameters are properly chosen. Therefore, with the present data, it is still premature to draw a conclusive conclusion on the FRB population.

14 pages, 5 figures

References in corpus (25)

• Cosmic Star Formation History
• A bright millisecond radio burst of extragalactic origin
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• The Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) Project
• The direct localization of a fast radio burst and its host
• The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
• A census of baryons in the Universe from localized fast radio bursts
• Fast Radio Bursts
• The First CHIME/FRB Fast Radio Burst Catalog
• The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
• INTEGRAL discovery of a burst with associated radio emission from the magnetar SGR 1935+2154
• The Physical Mechanisms of Fast Radio Bursts
• A repeating fast radio burst associated with a persistent radio source
• Host Galaxy Properties and Offset Distributions of Fast Radio Bursts: Implications for their Progenitors
• A nearby repeating fast radio burst in the direction of M81
• Probing Galactic Halos with Fast Radio Bursts
• The Physics of Fast Radio Bursts
• On the FRB luminosity function -- II. Event rate density
• The z-DM distribution of fast radio bursts
• Intergalactic medium dispersion measures of fast radio bursts estimated from IllustrisTNG simulation and their cosmological applications
• On the energy and redshift distributions of fast radio bursts
• Cosmology-insensitive estimate of IGM baryon mass fraction from five localized fast radio bursts
• Constraining Galaxy Haloes from the Dispersion and Scattering of Fast Radio Bursts and Pulsars
• Fast Radio Burst Distributions Consistent with the First CHIME/FRB Catalog
• Inferring redshift and energy distributions of fast radio bursts from the first CHIME/FRB catalog

Cited by in corpus (6)

• The Cosmic Evolution of Fast Radio Bursts Inferred from the CHIME/FRB Baseband Catalog 1
• Constraints on the progenitor models of fast radio bursts from population synthesis with the first CHIME/FRB catalog
• Time-integrated constraint on neutrino flux of CHIME fast radio burst sources with 10-year IceCube point-source data
• Cosmological Evolution of Fast Radio Bursts and The Star Formation Rate
• A Comprehensive Study of the Energy and Redshift Distributions of the Fast Radio Burst Population Based on the First CHIME/FRB Catalog
• The BINGO/ABDUS Project: Forecast for cosmological parameters from a mock Fast Radio Bursts survey