Pith. sign in

REVIEW 7 cited by

FRB 20210405I: a nearby Fast Radio Burst localised to sub-arcsecond precision with MeerKAT

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 2302.09787 v2 pith:Q3YWHCTC submitted 2023-02-20 astro-ph.HE

FRB 20210405I: a nearby Fast Radio Burst localised to sub-arcsecond precision with MeerKAT

Laura Nicole Driessen , Ewan Barr , David Buckley , Manisha Caleb , Hao Chen , Weiwei Chen , Mariusz Gromadzki , Fabian Jankowski
show 14 more authors
Renee Kraan-Korteweg Michael Kramer Jesse Palmerio Kaustubh Rajwade Ben Stappers Evangelia Tremou Susanna Vergani Patrick Woudt Mechiel Christiaan Bezuidenhout Mateusz Malenta Vincent Morello Sotiris Sanidas Mayuresh Surnis Rob Fender
This is my paper
classification astro-ph.HE
keywords dispersionmeasuredetectedgalaxymilkymodelsburstfast
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

We present the first sub-arcsecond localised Fast Radio Burst (FRB) detected using MeerKAT. FRB 20210405I was detected in the incoherent beam using the MeerTRAP pipeline on 2021 April 05 with a signal to noise ratio of 140.8 and a dispersion measure of 565.17 pc cm$^{-3}$. It was detected while MeerTRAP was observing commensally with the ThunderKAT large survey project, and was sufficiently bright that we could use the ThunderKAT 8s images to localise the FRB. Two different models of the dispersion measure in the Milky Way and halo suggest that the source is either right at the edge of the Galaxy, or outside. This highlights the uncertainty in the Milky Way dispersion measure models, particularly in the Galactic Plane, and the uncertainty of Milky Way halo models. Further investigation and modelling of these uncertainties will be facilitated by future detections and localisations of nearby FRBs. We use the combined localisation, dispersion measure, scattering, specific luminosity and chance coincidence probability information to find that the origin is most likely extra-galactic and identify the likely host galaxy of the FRB: 2MASS J1701249$-$4932475. Using SALT spectroscopy and archival observations of the field, we find that the host is a disk/spiral galaxy at a redshift of $z=0.066$.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 7 Pith papers

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

  1. A bright wideband radio burst from the isolated neutron star 2XMM J104608.7$-$594306

    astro-ph.HE 2026-05 unverdicted novelty 6.0

    A second coherent radio burst spanning 704-4032 MHz with spectral index -2.18, 54% linear and 22% circular polarization, and an orthogonal polarization angle jump was detected from 2XMM J104608.7-594306, showing rare ...

  2. Generalized Distributions of Host Dispersion Measures in the Fast Radio Burst Cosmology

    astro-ph.CO 2025-10 unverdicted novelty 6.0

    Generalizing the host galaxy dispersion measure distribution in FRB cosmology with 125 events produces Hubble constant estimates consistent with Planck 2018 and SH0ES while strongly favoring these models over narrow-p...

  3. Constraints on the baryon density from fast radio bursts using a non-parametric reconstruction of the Hubble parameter

    astro-ph.CO 2026-05 conditional novelty 5.0

    FRB dispersion measures combined with non-parametric H(z) reconstruction yield Ω_b h² = 0.02236 ± 0.00090, agreeing with BBN and Planck CMB to within 0.05%.

  4. The impact of FRB dispersion measure probability distribution functions on cosmographic estimates

    astro-ph.CO 2026-06 unverdicted novelty 4.0

    Cosmographic constraints from 106 FRBs on H0, q0, j0 depend sensitively on whether a Gaussian or quasi-Gaussian PDF is assumed for DM_IGM and on whether the baryon mass fraction is fixed or free.

  5. 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

    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.

  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 conditional novelty 4.0

    LOFAR2.0, FAST Core Array and BINGO are forecast to bound f_PBH < 0.16 (M>1 Msun), <0.39 (M>10 Msun) and <0.39 (M>0.1 Msun) respectively from null FRB lensing.

  7. Rapid Response Triggering for Radio Transients with the SKA Observatory

    astro-ph.IM 2026-07 accept novelty 3.0

    SKA-Low and SKA-Mid should implement automated rapid-response triggering on external and internal alerts to enable early radio observations of diverse transients.