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Four New Fast Radio Bursts Discovered in the Parkes 70-cm Pulsar Survey Archive
High Energy Astrophysical Phenomena · Submitted 25 Jul 2022
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Our results suggest that pulsar survey archives remain important sources of previously undetected FRBs and that searches for FRBs on time scales extending beyond $\sim 100$ ms may reveal the presence of a larger population of wide-pulse FRBs.
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The abstract, sentence by sentence
We present four new fast radio bursts discovered in a search of the Parkes 70-cm pulsar survey data archive for dispersed single pulses and bursts. We searched dispersion measures (DMs) ranging between 0 to 5000 pc cm$^{-3}$ with the HEIMDALL and FETCH detection and classification algorithms. All four of the FRBs discovered have significantly larger widths ($> 50$ ms) than almost all of the FRBs detected and cataloged to date. The large pulse widths are not dominated by interstellar scattering or dispersive smearing within channels. One of the FRBs has a DM of 3338 pc cm$^{3}$, the largest measured for any FRB to date. These are also the first FRBs detected by any radio telescope so far, predating the Lorimer Burst by almost a decade. Our results suggest that pulsar survey archives remain important sources of previously undetected FRBs and that searches for FRBs on time scales extending beyond $\sim 100$ ms may reveal the presence of a larger population of wide-pulse FRBs.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We present four new fast radio bursts discovered in a search of the Parkes 70-cm pulsar survey data archive for dispersed single pulses and bursts. | contribution 0.98 | 0.97 | 0.10 | asserted 1.00 |
| s1 | We searched dispersion measures (DMs) ranging between 0 to 5000 pc cm$^{-3}$ with the HEIMDALL and FETCH detection and classification algorithms. | method 1.00 | 0.95 | 0.02 | asserted 0.99 |
| s2 | All four of the FRBs discovered have significantly larger widths ($> 50$ ms) than almost all of the FRBs detected and cataloged to date. | result 1.00 | 0.89 | 0.14 | asserted 1.00 |
| s3 | The large pulse widths are not dominated by interstellar scattering or dispersive smearing within channels. | result 0.72 | 0.84 | 0.06 | asserted 1.00 |
| s4 | One of the FRBs has a DM of 3338 pc cm$^{3}$, the largest measured for any FRB to date. | result 1.00 | 0.90 | 0.07 | asserted 1.00 |
| s5 | These are also the first FRBs detected by any radio telescope so far, predating the Lorimer Burst by almost a decade. | result 0.87 | 0.39 | 0.07 | asserted 1.00 |
| s6 | Our results suggest that pulsar survey archives remain important sources of previously undetected FRBs and that searches for FRBs on time scales extending beyond $\sim 100$ ms may reveal the presence of a larger population of wide-pulse FRBs. | interpretation 0.94 | 0.70 | 0.86 | hedged possibility 1.00 |
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The paper
Original abstract
We present four new fast radio bursts discovered in a search of the Parkes 70-cm pulsar survey data archive for dispersed single pulses and bursts. We searched dispersion measures (DMs) ranging between 0 to 5000 pc cm$^{-3}$ with the HEIMDALL and FETCH detection and classification algorithms. All four of the FRBs discovered have significantly larger widths ($> 50$ ms) than almost all of the FRBs detected and cataloged to date. The large pulse widths are not dominated by interstellar scattering or dispersive smearing within channels. One of the FRBs has a DM of 3338 pc cm$^{3}$, the largest measured for any FRB to date. These are also the first FRBs detected by any radio telescope so far, predating the Lorimer Burst by almost a decade. Our results suggest that pulsar survey archives remain important sources of previously undetected FRBs and that searches for FRBs on time scales extending beyond $\sim 100$ ms may reveal the presence of a larger population of wide-pulse FRBs.
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References
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2 arXiv papers cite this in 2 sentences
Papers citing it
Uses its data or values 1 paper
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Observed FRBs exhibit dispersion measures spanning approximately $90 pc cm^-3$ [ref] to $3300 pc cm^-3$ [ref] , with the majority lying below $1000 pc cm^-3$ [ref] .
Machine-learning approaches to dispersion measure estimation for fast radio bursts · Data Simulation · 0.92
Cites it as background 1 paper
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Fast radio bursts [ref] are energetic radio phenomena with rest-frame durations ranging from microseconds to several milliseconds.
Estimation of neutron star mass and radius of FRB 20240114A by identification of crustal oscillations · Introduction · 1.00
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