Deep Synoptic Array Science: Two Fast Radio Burst Sources in Massive Galaxy Clusters

Liam Connor; Vikram Ravi; Morgan Catha; Ge Chen; Jakob T. Faber; James W. Lamb; Gregg Hallinan; Charlie Harnach; Greg Hellbourg; Rick Hobbs; David Hodge; Mark Hodges; Casey Law; Paul Rasmussen; Jack Sayers; Kritti Sharma; Myles B. Sherman; Jun Shi; Dana Simard; Jean Somalwar; Reynier Squillace; Sander Weinreb; David P. Woody; Nitika Yadlapalli; The Deep Synoptic Array team

doi:10.3847/2041-8213/acd3ea

The Astrophysical Journal Letters (Jan 2023)

Deep Synoptic Array Science: Two Fast Radio Burst Sources in Massive Galaxy Clusters

Liam Connor,
Vikram Ravi,
Morgan Catha,
Ge Chen,
Jakob T. Faber,
James W. Lamb,
Gregg Hallinan,
Charlie Harnach,
Greg Hellbourg,
Rick Hobbs,
David Hodge,
Mark Hodges,
Casey Law,
Paul Rasmussen,
Jack Sayers,
Kritti Sharma,
Myles B. Sherman,
Jun Shi,
Dana Simard,
Jean Somalwar,
Reynier Squillace,
Sander Weinreb,
David P. Woody,
Nitika Yadlapalli,
The Deep Synoptic Array team

Affiliations

Liam Connor: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Vikram Ravi: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Morgan Catha: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Ge Chen: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Jakob T. Faber: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
James W. Lamb: ORCiD; Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Gregg Hallinan: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Charlie Harnach: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Greg Hellbourg: Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Rick Hobbs: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
David Hodge: Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Mark Hodges: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Casey Law: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]; Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Paul Rasmussen: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Jack Sayers: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Kritti Sharma: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Myles B. Sherman: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Jun Shi: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Dana Simard: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Jean Somalwar: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Reynier Squillace: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
Sander Weinreb: Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
David P. Woody: Owens Valley Radio Observatory, California Institute of Technology , Big Pine, CA 93513, USA
Nitika Yadlapalli: ORCiD; Cahill Center for Astronomy and Astrophysics, MC 249-17 California Institute of Technology , Pasadena, CA 91125, USA ; [email protected]
The Deep Synoptic Array team

DOI: https://doi.org/10.3847/2041-8213/acd3ea
Journal volume & issue: Vol. 949, no. 2
p. L26

Abstract

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The hot gas that constitutes the intracluster medium (ICM) has been studied at X-ray and millimeter/submillimeter wavelengths (Sunyaev–Zel’dovich effect) for decades. Fast radio bursts (FRBs) offer an additional method of directly measuring the ICM and gas surrounding clusters via observables such as dispersion measure (DM) and Faraday rotation measure. We report the discovery of two FRB sources detected with the Deep Synoptic Array whose host galaxies belong to massive galaxy clusters. In both cases, the FRBs exhibit excess extragalactic DM, some of which likely originate in the ICM of their respective clusters. FRB 20220914A resides in the galaxy cluster A2310 at z = 0.1125 with a projected offset from the cluster center of 520 ± 50 kpc. The host of a second source, FRB 20220509G, is an elliptical galaxy at z = 0.0894 that belongs to the galaxy cluster A2311 at the projected offset of 870 ± 50 kpc. These sources represent the first time an FRB has been localized to a galaxy cluster. We combine our FRB data with archival X-ray, Sunyaev–Zel'dovich (SZ), and optical observations of these clusters in order to infer properties of the ICM, including a measurement of gas temperature from DM and y _SZ of 0.8–3.9 keV. We then compare our results to massive cluster halos from the IllustrisTNG simulation. Finally, we describe how large samples of localized FRBs from future surveys will constrain the ICM, particularly beyond the virial radius of clusters.

Published in The Astrophysical Journal Letters

ISSN: 2041-8205 (Print); 2041-8213 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/2041-8205

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