Contemporaneous X-Ray Observations of 30 Bright Radio Bursts from the Prolific Fast Radio Burst Source FRB 20220912A

Abstract We present an extensive contemporaneous X-ray and radio campaign performed on the repeating fast radio burst (FRB) source FRB 20220912A for 8 weeks immediately following the source’s detection by CHIME/FRB. This includes X-ray data from XMM-Newton, NICER, and Swift, and radio detections of FRB 20220912A from CHIME/Pulsar and Effelsberg. We detect no significant X-ray emission at the time of 30 radio bursts with upper limits on a 0.5–10.0 keV X-ray fluence of (1.5–14.5) × 10 −10 erg cm −2 (99.7% credible interval, unabsorbed) on a timescale of 100 ms. Translated into a fluence ratio η x/r = F X-ray / F radio , this corresponds to η x/r < 7 × 10 6 . For persistent emission from the location of FRB 20220912A, we derive a 99.7% 0.5–10.0 keV isotropic flux limit of 8.8 × 10 −15 erg cm −2 s −1 (unabsorbed) or an isotropic luminosity limit of 1.4 × 10 41 erg s −1 at a distance of 362.4 Mpc. We derive a hierarchical extension to the standard Bayesian treatment of low-count and background-contaminated X-ray data, which allows the robust combination of multiple observations. This methodology allows us to place the best (lowest) 99.7% credible interval upper limit on an FRB η x/r to date, η x/r < 2 × 10 6 , assuming that all 30 detected radio bursts are associated with X-ray bursts with the same fluence ratio. If we instead adopt an X-ray spectrum similar to the X-ray burst observed contemporaneously with FRB-like emission from the Galactic magnetar SGR 1935+2154 detected on 2020 April 28, we derive a 99.7% credible interval upper limit on η x/r of 8 × 10 5 , which is only 3 times the observed value of η x/r for SGR 1935+2154.

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Publication Details

Journal
The Astrophysical Journal
Published
2024-10-01
DOI
https://doi.org/10.3847/1538-4357/ad6a13
Citations
9
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
2.98

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article

Contemporaneous X-Ray Observations of 30 Bright Radio Bursts from the Prolific Fast Radio Burst Source FRB 20220912A

Mawson W. Sammons, Paul Scholz, Daniele Michilli, Ayush Pandhi et al.
9 citations
The Astrophysical Journal
Pulsars and Gravitational Waves Research
2.98
article

Contemporaneous X-Ray Observations of 30 Bright Radio Bursts from the Prolific Fast Radio Burst Source FRB 20220912A

Mawson W. Sammons, Paul Scholz, Daniele Michilli, Ayush Pandhi, Tomás Cassanelli, Kiyoshi W. Masui, Gwendolyn M. Eadie, Kaitlyn Shin, B. M. Gaensler, Thomas C. Abbott, V. M. Kaspi, Ingrid H. Stairs, Marilyn Cruces, Amanda M. Cook, David C. Stenning, Alice P. Curtin, Chia Min Tan, Masoud Rafiei-Ravandi, Mohit Bhardwaj, Kendrick M. Smith, Mattias Lazda, Aaron B. Pearlman, Adaeze L. Ibik, Fengqiu Adam Dong
article en
9 citations

Abstract

Abstract We present an extensive contemporaneous X-ray and radio campaign performed on the repeating fast radio burst (FRB) source FRB 20220912A for 8 weeks immediately following the source’s detection by CHIME/FRB. This includes X-ray data from XMM-Newton, NICER, and Swift, and radio detections of FRB 20220912A from CHIME/Pulsar and Effelsberg. We detect no significant X-ray emission at the time of 30 radio bursts with upper limits on a 0.5–10.0 keV X-ray fluence of (1.5–14.5) × 10 −10 erg cm −2 (99.7% credible interval, unabsorbed) on a timescale of 100 ms. Translated into a fluence ratio η x/r = F X-ray / F radio , this corresponds to η x/r < 7 × 10 6 . For persistent emission from the location of FRB 20220912A, we derive a 99.7% 0.5–10.0 keV isotropic flux limit of 8.8 × 10 −15 erg cm −2 s −1 (unabsorbed) or an isotropic luminosity limit of 1.4 × 10 41 erg s −1 at a distance of 362.4 Mpc. We derive a hierarchical extension to the standard Bayesian treatment of low-count and background-contaminated X-ray data, which allows the robust combination of multiple observations. This methodology allows us to place the best (lowest) 99.7% credible interval upper limit on an FRB η x/r to date, η x/r < 2 × 10 6 , assuming that all 30 detected radio bursts are associated with X-ray bursts with the same fluence ratio. If we instead adopt an X-ray spectrum similar to the X-ray burst observed contemporaneously with FRB-like emission from the Galactic magnetar SGR 1935+2154 detected on 2020 April 28, we derive a 99.7% credible interval upper limit on η x/r of 8 × 10 5 , which is only 3 times the observed value of η x/r for SGR 1935+2154.

The Astrophysical JournalVol. 974(2)
European Southern Observatory (DE), University of British Columbia (CA), Pontificia Universidad Católica de Chile (CL), Simon Fraser University (CA), Perimeter Institute (CA), University of California, Santa Cruz (US), University of Toronto (CA), York University (CA), Curtin University (AU), Atacama Large Millimeter Submillimeter Array (CL), Canadian Institute for Theoretical Astrophysics (CA), Max Planck Institute for Radio Astronomy (DE), International Centre for Radio Astronomy Research (AU), McGill University (CA), Massachusetts Institute of Technology (US), University of Chile (CL), Carnegie Mellon University (US), Ontario Power Generation (CA)
National Science Foundation, National Aeronautics and Space Administration, Canadian Institute for Advanced Research, McGill University, University of Leicester, Canada Research Chairs, Canada Foundation for Innovation, University of Toronto, Smithsonian Astrophysical Observatory, McGill Space Institute, Natural Sciences and Engineering Research Council of Canada, Fonds de recherche du Québec – Nature et technologies
Openalex Percentile: Top 9%
Pulsars and Gravitational Waves Research
2.98
DOIOpen Access PDFOpenAlex
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