CHIME/FRB发现的25个重复快速射电暴源
高能天体物理现象
2023-05-24 v2
摘要
我们展示了在2019年9月30日至2021年5月1日之间探测到的CHIME/FRB事件中发现的25个新的重复快速射电暴(FRB)源。这些源是使用一种新的聚类算法找到的，该算法寻找天空中位置重合且具有相似色散量(DM)的多个事件。新的重复者DM范围从220 pc cm到1700 pc cm，包括仅表现出两次爆发到多达十二次爆发的源。我们报告了重复源与表观非重复源在DM和河外DM(eDM)分布上的统计显著差别，重复者具有更低的均值DM和eDM，并讨论了其含义。在修正灵敏度和曝光效应后，我们发现重复者的重复率与表观非重复源重复率上限之间无明确双峰性，尽管一些活跃的重复源作为异常值脱颖而出。我们测量了随时间的重复者比例，发现其在我们迄今总的天区观测时间内趋于%的平衡。我们还报告了14个更有希望的重复FRB候选源，值得后续观测以确认。
引用
@article{arxiv.2301.08762,
title = {CHIME/FRB Discovery of 25 Repeating Fast Radio Burst Sources},
author = {FRB Collaboration and Bridget C. Andersen and Kevin Bandura and Mohit Bhardwaj and P. J. Boyle and Charanjot Brar and Tomas Cassanelli and S. Chatterjee and Pragya Chawla and Amanda M. Cook and Alice P. Curtin and Matt Dobbs and Fengqiu Adam Dong and Jakob T. Faber and Mateus Fandino and Emmanuel Fonseca and B. M. Gaensler and Utkarsh Giri and Antonio Herrera-Martin and Alex S. Hill and Adaeze Ibik and Alexander Josephy and Jane F. Kaczmarek and Zarif Kader and Victoria Kaspi and T. L. Landecker and Adam E. Lanman and Mattias Lazda and Calvin Leung and Hsiu-Hsien Lin and Kiyoshi W. Masui and Ryan Mckinven and Juan Mena-Parra and Bradley W. Meyers and D. Michilli and Cherry Ng and Ayush Pandhi and Aaron B. Pearlman and Ue-Li Pen and Emily Petroff and Ziggy Pleunis and Masoud Rafiei-Ravandi and Mubdi Rahman and Scott M. Ransom and Andre Renard and Ketan R. Sand and Pranav Sanghavi and Paul Scholz and Vishwangi Shah and Kaitlyn Shin and Seth Siegel and Kendrick Smith and Ingrid Stairs and Jianing Su and Shriharsh P. Tendulkar and Keith Vanderlinde and Haochen Wang and Dallas Wulf and Andrew Zwaniga},
journal= {arXiv preprint arXiv:2301.08762},
year = {2023}
}
备注
ApJ in press. Comments are still welcome and follow-up observations are encouraged!