Constraining the Faint-end Slope of the Fast Radio Burst Energy Function Using CHIME/FRB Catalog-1 and Local Volume Galaxies
Mohit Bhardwaj; Victoria M. Kaspi; K. W. Masui; B. M. Gaensler; Adaeze L. Ibik; Mawson W. Sammons · 2025 · The Astrophysical Journal
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Abstract
Despite hundreds of detected fast radio bursts (FRBs), the faint-end slope ( γ ) of their energy distribution remains poorly constrained, hindering understanding of whether bright, cosmological FRBs and faint, Galactic magnetar SGR 1935+2154-like bursts share a common origin. In this study, we constrain this faint-end slope, modeled with a Schechter-like distribution, by searching for potential associations between bursts from the CHIME/FRB Catalog-1 and galaxies in the Local Volume. We crossmatched CHIME/FRB Catalog-1 FRBs with 495 Local Volume galaxies within 21 Mpc, identified from the HECA
Abstract by Mohit Bhardwaj; Victoria M. Kaspi; K. W. Masui; B. M. Gaensler; Adaeze L. Ibik; Mawson W. Sammons, The Astrophysical Journal (2025) — licensed CC BY 4.0.
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Metadata source: DOAJ · DOI 10.3847/1538-4357/aded17