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Sub-arcminute localization of 13 repeating fast radio bursts detected by CHIME/FRB

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arxiv 2212.11941 v1 pith:JBQ5EY3D submitted 2022-12-22 astro-ph.HE

Daniele Michilli , Mohit Bhardwaj , Charanjot Brar , Chitrang Patel , B.M. Gaensler , Victoria M. Kaspi , Aida Kirichenko , Kiyoshi W. Masui
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Ketan R. Sand Paul Scholz Kaitlyn Shin Ingrid Stairs Tomas Cassanelli Amanda M. Cook Matt Dobbs Fengqiu Adam Dong Emmanuel Fonseca Adaeze Ibik Jane Kaczmarek Calvin Leung Aaron B. Pearlman Emily Petroff Ziggy Pleunis Masoud Rafiei-Ravandi Pranav Sanghavi Shriharsh P. Tendulkar
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keywords localizationgalaxiesrepeatingburstschimefastformationfrbs
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We report on improved sky localizations of thirteen repeating fast radio bursts (FRBs) discovered by CHIME/FRB via the use of interferometric techniques on channelized voltages from the telescope. These so-called 'baseband localizations' improve the localization uncertainty area presented in past studies by more than three orders of magnitude. The improved localization regions are provided for the full sample of FRBs to enable follow-up studies. The localization uncertainties, together with limits on the source distances from their dispersion measures (DMs), allow us to identify likely host galaxies for two of the FRB sources. FRB 20180814A lives in a massive passive red spiral at z~0.068 with very little indication of star formation, while FRB 20190303A resides in a merging pair of spiral galaxies at z~0.064 undergoing significant star formation. These galaxies show very different characteristics, further confirming the presence of FRB progenitors in a variety of environments even among the repeating sub-class.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The One-Loop Power Spectrum of Fast Radio Burst Dispersion Measures

    astro-ph.CO 2026-08 accept novelty 7.0 of 10

    A one-loop EFT power spectrum model for FRB free-electron clustering matches FLAMINGO simulations to k ~ 0.2 h/Mpc, with electron bias b_e ~ 0.92 and near-perfect electron-matter correlation.

  2. Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST

    astro-ph.HE 2025-07 conditional novelty 5.0 of 10

    Multi-year FAST polarimetry of four repeating FRBs reveals strong RM variability in 64% of known repeaters and a shallow turbulence spectrum in the surrounding plasma.

  3. Probing Primordial Black Holes with upcoming Radio Telescopes: a case study for LOFAR2.0, FAST Core Array and BINGO

    astro-ph.CO 2026-04 unverdicted novelty 4.0 of 10

    LOFAR2.0, FAST Core Array and BINGO can constrain the PBH dark matter fraction f_PBH below 0.16-0.39 for masses above 10^{-2} to 10 solar masses via FRB lensing statistics.

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