The Second CHIME/FRB Catalog of Fast Radio Bursts
| Title: | The Second CHIME/FRB Catalog of Fast Radio Bursts |
|---|---|
| Authors: | The CHIME/FRB Collaboration; Thomas Abbott; Bridget C. Andersen; Shion Andrew; Kevin Bandura; Mohit Bhardwaj; Yash Bhusare; Charanjot Brar; Tomas Cassanelli; Shami Chatterjee; Jean-Francois Cliche; Amanda M. Cook; Alice Curtin; Matt Dobbs; Fengqiu Adam Dong; Gwendolyn Eadie; Tarraneh Eftekhari; Emmanuel Fonseca; B. M. Gaensler; Deborah Good; Mark Halpern; Jason W. T. Hessels; Adaeze Ibik; Naman Jain; Ronniy C. Joseph; Zarif Kader; Victoria M. Kaspi; Afrokk Khan; Bikash Kharel; Ajay Kumar; T. L. Landecker; Dustin Lang; Adam E. Lanman; Magnus L’Argent; Mattias Lazda; Calvin Leung; Dong Zi Li; Chris J. Lintott; Robert Main; Kiyoshi W. Masui; Sujay Mate; Kyle McGregor; Ryan Mckinven; Juan Mena-Parra; Bradley W. Meyers; Daniele Michilli; Cherry Ng; Mason Ng; Kenzie Nimmo; Gavin Noble; Ayush Pandhi; Swarali S. Patil; Aaron B. Pearlman; Ue-Li Pen; Ziggy Pleunis; J. Xavier Prochaska; Masoud Rafiei-Ravandi; Scott Ransom; Andre Renard; Mawson W. Sammons; Ketan R. Sand; Paul Scholz; Vishwangi Shah; Kaitlyn Shin; Seth R. Siegel; Sloane Sirota; Kendrick Smith; Ingrid Stairs; David C. Stenning; Shriharsh P. Tendulkar; Keith Vanderlinde; Mike Walmsley; Haochen Wang; Dallas Wulf |
| Source: | The Astrophysical Journal Supplement Series, Vol 283, Iss 1, p 34 (2026) |
| Publisher Information: | IOP Publishing |
| Publication Year: | 2026 |
| Collection: | Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: | Radio transient sources; Compact objects; Catalogs; Astrophysics; QB460-466 |
| Description: | We present a catalog of 4539 fast radio bursts (FRBs) observed with the Canadian Hydrogen Intensity Mapping Experiment telescope between 2018 July 25 and 2023 September 15. These bursts originate from 3641 unique sources, including 981 bursts from 83 known repeating sources. For each FRB, the catalog provides an $O(1{0}^{{\prime} })$ estimate of sky location along with corresponding measurements of cumulative exposure time and survey sensitivity over the observing period. It includes a total-intensity dynamic spectrum between 400 and 800 MHz at 0.983 ms resolution. From this spectrum, we constrain a model of the burst morphology and measure key parameters such as arrival time, intrinsic temporal width, dispersion measure, scattering time, and flux density. This second catalog includes all FRBs from the first catalog, with every event reprocessed using a uniform and improved analysis framework. We show that previously published inferences remain valid under the updated measurements. We assess consistency of the detection rate across observational parameters, present initial distributions of burst properties, and outline ongoing and future studies that will use this catalog to investigate the nature of FRBs and their utility as astrophysical and cosmological probes. |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | https://doi.org/10.3847/1538-4365/ae3828; https://doaj.org/toc/0067-0049; https://doaj.org/article/990ed74e01d6444c8ee65786021424b1 |
| DOI: | 10.3847/1538-4365/ae3828 |
| Availability: | https://doi.org/10.3847/1538-4365/ae3828; https://doaj.org/article/990ed74e01d6444c8ee65786021424b1 |
| Accession Number: | edsbas.BCA79D69 |
| Database: | BASE |