A multi-telescope fit to the FRB population, allowing for FRB repetition
Abstract
Fast radio bursts (FRBs) are millisecond-duration radio pulses with extragalactic origins. A majority of FRBs have only had a single pulse detected from them; however, an increasing number have been identified as repeaters. Here we present a full redshift -- dispersion measure (z-DM) analysis including a simple power-law model of repetition rates. We assume all FRBs are drawn from the same intrinsic population and fit these FRB population parameters using data from ASKAP, Murriyang (Parkes), DSA, FAST, MeerKAT and CHIME catalogue 1. We do not utilise data from CHIME catalogue 2 yet, as we cannot robustly identify all repeaters in the sample. We constrain the minimum repetition rate above 1039 erg to Rmin=−4.23+1.10−1.74 d−1, the maximum repetition rate to Rmax ≳ 1 d−1 and the repetition rate index to Rγ=−2.20+0.12−0.22. These parameters do not show significant correlation with any other FRB parameters. Our values are an improvement on existing results and are self-consistent with the DM distribution of CHIME and observed ratios of repeaters to non-repeaters across the sky. We also provide updated estimates of the FRB energy function and host galaxy parameters.
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BibTeX
@misc{hoffmann2026multitelescope,
title = {{A multi-telescope fit to the FRB population, allowing for FRB repetition}},
author = {Jordan L. Hoffmann and Clancy W. James and Jason X. Prochaska and Ines Pastor-Marazuela and Kritti Sharma and Liam Connor},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.27282},
eprint = {2609.27282},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.27282},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - A multi-telescope fit to the FRB population, allowing for FRB repetition
AU - Jordan L. Hoffmann
AU - Clancy W. James
AU - Jason X. Prochaska
AU - Ines Pastor-Marazuela
AU - Kritti Sharma
AU - Liam Connor
PY - 2026
DA - 2026/09/23
PB - arXiv
DO - 10.48550/arxiv.2609.27282
UR - https://arxiv.org/abs/2609.27282
AB - Fast radio bursts (FRBs) are millisecond-duration radio pulses with extragalactic origins. A majority of FRBs have only had a single pulse detected from them; however, an increasing number have been identified as repeaters. Here we present a full redshift -- dispersion measure (z-DM) analysis including a simple power-law model of repetition rates. We assume all FRBs are drawn from the same intrinsic population and fit these FRB population parameters using data from ASKAP, Murriyang (Parkes), DSA, FAST, MeerKAT and CHIME catalogue 1. We do not utilise data from CHIME catalogue 2 yet, as we cannot robustly identify all repeaters in the sample. We constrain the minimum repetition rate above 10^39 erg to R_min=−4.23^+1.10_−1.74 d^−1, the maximum repetition rate to R_max ≳ 1 d^−1 and the repetition rate index to R_γ=−2.20^+0.12_−0.22. These parameters do not show significant correlation with any other FRB parameters. Our values are an improvement on existing results and are self-consistent with the DM distribution of CHIME and observed ratios of repeaters to non-repeaters across the sky. We also provide updated estimates of the FRB energy function and host galaxy parameters.
ER -