Proposed Host Galaxies of Repeating Fast Radio Burst Sources Detected by CHIME/FRB
Year: 2024
Type: article
Abstract: We present a search for host galaxy associations for the third set of repeating fast radio burst (FRB) sources discovered by the CHIME/FRB Collaboration. Using the ∼1′ CHIME/FRB baseband localizations and probabilistic methods, we identify potential host galaxies of two FRBs, 20200223B and 20190110C at redshifts of 0.06024(2) and 0.12244(6), respectively. We also discuss the properties of a third marginal candidate host galaxy association for FRB 20191106C with a host redshift of 0.10775(1). The three putative host galaxies are all relatively massive, fall on the standard mass–metallicity relationship for nearby galaxies, and show evidence of ongoing star formation. They also all show signatures of being in a transitional regime, falling in the green valley , which is between the bulk of star-forming and quiescent galaxies. The plausible host galaxies identified by our analysis are consistent with the overall population of repeating and nonrepeating FRB hosts while increasing the fraction of massive and bright galaxies. Coupled with these previous host associations, we identify a possible excess of FRB repeaters whose host galaxies have M u − M r colors redder than the bulk of star-forming galaxies. Additional precise localizations are required to confirm this trend.
Source: The Astrophysical Journal
Authors: Adaeze L. Ibik, Maria R. Drout, B. M. Gaensler, Paul Scholz, Daniele Michilli, Mohit Bhardwaj, Victoria M. Kaspi, Ziggy Pleunis, Tomas Cassanelli, Amanda M. Cook, Fengqiu A. Dong, Jane F. Kaczmarek, Calvin Leung, Katherine J. Lu, Kiyoshi W. Masui, Aaron B. Pearlman, Masoud Rafiei-Ravandi, Ketan R Sand, Kaitlyn Shin, Kendrick M. Smith, Ingrid H. Stairs
Institutions: University of Toronto, University of California, Santa Cruz, Massachusetts Institute of Technology, Carnegie Mellon University, Trottier Space Institute at McGill, McGill University, University of Chile, University of British Columbia, Herzberg Institute of Astrophysics, Commonwealth Scientific and Industrial Research Organisation, National Research Council Canada, Perimeter Institute
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Science Foundation, Canadian Institute for Advanced Research, McGill University, Space Telescope Science Institute, Canada Research Chairs, University of Toronto, Ministério da Ciência e Tecnologia, Smithsonian Astrophysical Observatory, McGill Space Institute, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Comisión Nacional de Investigación Científica y Tecnológica, Fonds de recherche du Québec – Nature et technologies
Awards: The Magnetic and Transient Universes Revealed Through Wide-Field Radio Astronomy, G1908529863, The Evolution, Influence, and Ultimate Fate of Massive Stars: Transient Phenomena and Stellar Astrophysics in the Era of Wide-Field Surveys, G5180320897, G6185041685, Collaborative Research: Cosmology with CHIME, G832689143
OpenAlex ID: W4390941343