Distribution of fast radio burst dispersion measures in CHIME/FRB Catalog 1: implications on the origin of FRBs

Abstract

Recently, CHIME/FRB project published its first fast radio burst (FRB) catalog (hereafter, Catalog 1), which totally contains 536 unique bursts. With the help of the latest set of FRBs in this large-size catalog, we aim to investigate the dispersion measure (DM) or redshift ($z$) distribution of the FRB population, and solution of this problem could be used to clarify the question of FRB origin. In this study, we adopted the M\&E 2018 model, to fit the observed $z$ distribution of FRBs in Catalog 1. In the M\&E 2018 model, we are mostly interested in the $\Phi (z)$ function, i.e., number of bursts per proper time per comoving volume, which is represented by the star formation rate (SFR) with a power-law index $n$. Our estimated value of $n$ is $0.0_{-0.0}^{+0.6}$ ($0.0_{-0.0}^{+2.1}$) at the 68 (95) per cent confidence level, implying that the FRB population evolves with redshift consistent with, or faster than, the SFR. Specially, the consistency of the $n$ values estimated by this study and the SFR provides a potential support for the hypothesis of FRBs originating from young magnetars.

7 pages, 2 figures, accepted for publication in Astronomy Reports

References in corpus (23)

• Cosmic Star Formation History
• A bright millisecond radio burst of extragalactic origin
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• A census of baryons in the Universe from localized fast radio bursts
• Fast Radio Bursts
• The First CHIME/FRB Fast Radio Burst Catalog
• A bimodal burst energy distribution of a repeating fast radio burst source
• Frequency-dependent polarization of repeating fast radio bursts-implications for their origin
• The z-DM distribution of fast radio bursts
• Sub-second periodicity in a fast radio burst
• The fast radio burst population evolves, consistent with the star-formation rate
• CHIME/FRB Catalog 1 results: statistical cross-correlations with large-scale structure
• Origin and evolution of magnetars
• Chandra Observations of the High-Magnetic-Field Radio Pulsar J1718-3718
• The Fast Radio Burst Dispersion Measure Distribution
• A Data-Driven Technique Using Millisecond Transients to Measure the Milky Way Halo
• No Evidence for Galactic Latitude Dependence of the Fast Radio Burst Sky Distribution
• Fast radio bursts: do repeaters and non-repeaters originate in statistically similar ensembles
• How to make a mature accreting magnetar
• Fast radio bursts by high-frequency synchrotron maser emission generated at the reverse shock of a powerful magnetar flare
• Luminosity distribution of fast radio bursts from CHIME/FRB Catalog 1 by means of the updated Macquart relation
• Statistical properties of fast radio bursts elucidate their origins: magnetars are favoured over gamma-ray bursts
• Comparison of the Parkes and FAST FRB DM Distribution

Cited by in corpus (1)

• Positive and unlabelled machine learning reveals new fast radio burst repeater candidates