Pith. sign in

REVIEW 7 cited by

A nearby repeating fast radio burst in the direction of M81

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2103.01295 v2 pith:VCPUQ5HN submitted 2021-03-01 astro-ph.HE astro-ph.GA

M. Bhardwaj , B. M. Gaensler , V. M. Kaspi , T. L. Landecker , R. Mckinven , D. Michilli , Z. Pleunis , S. P. Tendulkar
show 18 more authors
B. C. Andersen P. J. Boyle T. Cassanelli P. Chawla A. Cook M. Dobbs E. Fonseca J. Kaczmarek C. Leung K. Masui M. Münchmeyer C. Ng M. Rafiei-Ravandi P. Scholz K. Shin K. M. Smith I. H. Stairs A. V. Zwaniga
This is my paper · ORCID
classification astro-ph.HEastro-ph.GA
keywords localizationsourceburstburstsdetectedradiocounterpartsdata
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

We report on the discovery of FRB 20200120E, a repeating fast radio burst (FRB) with low dispersion measure (DM), detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB project. The source DM of 87.82 pc cm$^{-3}$ is the lowest recorded from an FRB to date, yet is significantly higher than the maximum expected from the Milky Way interstellar medium in this direction (~ 50 pc cm$^{-3}$). We have detected three bursts and one candidate burst from the source over the period 2020 January-November. The baseband voltage data for the event on 2020 January 20 enabled a sky localization of the source to within $\simeq$ 14 sq. arcmin (90% confidence). The FRB localization is close to M81, a spiral galaxy at a distance of 3.6 Mpc. The FRB appears on the outskirts of M81 (projected offset $\sim$ 20 kpc) but well inside its extended HI and thick disks. We empirically estimate the probability of chance coincidence with M81 to be $< 10^{-2}$. However, we cannot reject a Milky Way halo origin for the FRB. Within the FRB localization region, we find several interesting cataloged M81 sources and a radio point source detected in the Very Large Array Sky Survey (VLASS). We searched for prompt X-ray counterparts in Swift/BAT and Fermi/GBM data, and for two of the FRB 20200120E bursts, we rule out coincident SGR 1806$-$20-like X-ray bursts. Due to the proximity of FRB 20200120E, future follow-up for prompt multi-wavelength counterparts and sub-arcsecond localization could be constraining of proposed FRB models.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 7 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. Fast Radio Bursts Trace Cosmic Star Formation with Little Delay

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    Hierarchical Bayesian analysis of CHIME/FRB finds the FRB volumetric rate peaks with the cosmic star-formation history at mean delays of 0.1–0.3 Gyr, consistent with zero delay and ruling out multi-Gyr merger-like delays.

  3. Formation of rotating supergiants via stellar mergers in dense clusters: Implications for black hole natal spins

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    Stellar mergers with mass ratio q≳0.3 in young clusters can produce blue-supergiant progenitors that leave black holes with dimensionless spins a≃0.5–0.8, reducing post-merger retention and hierarchical-merger rates.

  4. The role of the galaxy stellar mass function in determining the cosmological distribution of astrophysical transients with applications to fast radio bursts and merging binary black holes

    astro-ph.HE 2025-12 conditional novelty 6.0 of 10

    Using the galaxy stellar mass function weighted by observed FRB host masses lowers the relevant stellar-mass density by ~3x, boosting the implied FRB formation efficiency and biasing standard population-inference results.

  5. H.E.S.S. programme searching for VHE gamma rays associated with FRBs

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

    H.E.S.S. found no very high energy gamma-ray counterpart to targeted fast radio bursts, setting 99% confidence upper limits on their luminosity of 10^44 to 10^48 erg/s.

  6. 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.

  7. Exploring the Galactic plasma with pulsars in the SKA Era

    astro-ph.HE 2026-07 accept novelty 2.5 of 10

    Pulsars map Galactic, solar-wind, and ionospheric plasma via DM, RM, scintillation, and scattering; SKA-Low/Mid AA4 will push DM precision to ~10^{-8} pc cm^{-3} and transform IISM models.

Pith tools