发表机构
International Centre for Radio Astronomy Research, Curtin University; Department of Astronomy and Astrophysics, University of California, Santa Cruz; ASTRON, Netherlands Institute for Radio Astronomy（国际射电天文研究中心，科廷大学; 天文学与天体物理学系，加州大学圣克鲁兹分校; ASTRON，荷兰射电天文研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文通过多望远镜数据拟合FRB族群，引入重复率幂律模型，约束了重复率参数，改进了现有结果，并更新了能量函数与宿主星系参数。
AI 中文摘要
快速射电暴（FRB）是起源于银河系外的毫秒级射电脉冲。大多数FRB仅探测到单次脉冲；然而，越来越多的FRB被确认为重复暴。本文提出了一个完整的红移-色散量（$z$-DM）分析，包括一个简单的重复率幂律模型。我们假设所有FRB来自同一内在族群，并使用来自ASKAP、Murriyang（Parkes）、DSA、FAST、MeerKAT和CHIME目录1的数据拟合这些FRB族群参数。我们尚未使用CHIME目录2的数据，因为我们无法稳健地识别该样本中的所有重复暴。我们将高于$10^{39}$ erg的最小重复率约束为$R_{\mathrm{min}}=-4.23^{+1.10}_{-1.74}$ d$^{-1}$，最大重复率约束为$R_{\mathrm{max}} \gtrsim 1$ d$^{-1}$，重复率指数约束为$R_\gamma=-2.20^{+0.12}_{-0.22}$。这些参数与其他任何FRB参数没有显著相关性。我们的结果是对现有结果的改进，并且与CHIME的DM分布以及全天重复暴与非重复暴的观测比率自洽。我们还提供了FRB能量函数和宿主星系参数的更新估计。
英文摘要
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 $R_{\mathrm{min}}=-4.23^{+1.10}_{-1.74}$ d$^{-1}$, the maximum repetition rate to $R_{\mathrm{max}} \gtrsim 1$ 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.
Comments17 pages, 9 figures, 7 tables, submitted to PASA
