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Constraining the nature of FRB-emitting bunches via photo-magnetic cascades
High Energy Astrophysical Phenomena · Submitted 28 Oct 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We find that to avoid catastrophic cascades that quench emission, bunches capable of producing FRBs must have a modest density $n_e \approx 10^{13-14}\, {\rm cm^{-3}}$, and likely propagate along field lines with large curvature radii, $\rho > 10^8 \, {\rm cm}$.
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The abstract, sentence by sentence
We provide constraints on the nature of particle bunches that power fast radio bursts (FRBs) in the coherent curvature radiation model. It has been shown that current-induced perturbation to the motion of individual particles results in a high-energy, incoherent component of emission. We consider photo-magnetic interactions and show that the high-energy radiation can produce pairs which screen the accelerating electric field. We find that to avoid catastrophic cascades that quench emission, bunches capable of producing FRBs must have a modest density $n_e \approx 10^{13-14}\, {\rm cm^{-3}}$, and likely propagate along field lines with large curvature radii, $\rho > 10^8 \, {\rm cm}$. This rules out rapidly rotating magnetars as FRB sources within the coherent curvature radiation model.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We provide constraints on the nature of particle bunches that power fast radio bursts (FRBs) in the coherent curvature radiation model. | contribution 1.00 | 0.90 | 0.07 | asserted 0.98 |
| s1 | It has been shown that current-induced perturbation to the motion of individual particles results in a high-energy, incoherent component of emission. | background 1.00 | 0.05 | 0.02 | asserted 1.00 |
| s2 | We consider photo-magnetic interactions and show that the high-energy radiation can produce pairs which screen the accelerating electric field. | contribution 0.75 | 0.88 | 0.05 | asserted 1.00 |
| s3 | We find that to avoid catastrophic cascades that quench emission, bunches capable of producing FRBs must have a modest density $n_e \approx 10^{13-14}\, {\rm cm^{-3}}$, and likely propagate along field lines with large curvature radii, $\rho > 10^8 \, {\rm cm}$. | result 1.00 | 0.95 | 0.80 | asserted 0.90 |
| s4 | This rules out rapidly rotating magnetars as FRB sources within the coherent curvature radiation model. | interpretation 0.97 | 0.70 | 0.44 | asserted 1.00 |
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The paper
Original abstract
We provide constraints on the nature of particle bunches that power fast radio bursts (FRBs) in the coherent curvature radiation model. It has been shown that current-induced perturbation to the motion of individual particles results in a high-energy, incoherent component of emission. We consider photo-magnetic interactions and show that the high-energy radiation can produce pairs which screen the accelerating electric field. We find that to avoid catastrophic cascades that quench emission, bunches capable of producing FRBs must have a modest density $n_e \approx 10^{13-14}\, {\rm cm^{-3}}$, and likely propagate along field lines with large curvature radii, $\rho > 10^8 \, {\rm cm}$. This rules out rapidly rotating magnetars as FRB sources within the coherent curvature radiation model.
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How the literature uses it
1 arXiv paper cite this in 1 sentence
What it cites · 3 sentences without a confident label
Cites as background 3 papers
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Fast radio bursts (FRBs) are extremely bright millisecond duration radio transients [ref] , and extragalactic highly magnetized neutron stars known as magnetars could be the source of this enigmatic emission [ref] , possibly with properties different to those of known galactic magnetars [ref] .
Millisecond extragalactic radio bursts as magnetar flares · Introduction · 0.94
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Fast radio bursts (FRBs) are extremely bright millisecond duration radio transients [ref] , and extragalactic highly magnetized neutron stars known as magnetars could be the source of this enigmatic emission [ref] , possibly with properties different to those of known galactic magnetars [ref] .
The First CHIME/FRB Fast Radio Burst Catalog · Introduction · 0.94
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Fast radio bursts (FRBs) are extremely bright millisecond duration radio transients [ref] , and extragalactic highly magnetized neutron stars known as magnetars could be the source of this enigmatic emission [ref] , possibly with properties different to those of known galactic magnetars [ref] .
Fast radio bursts at the dawn of the 2020s · Introduction · 0.94
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