REVIEW 8 cited by
Fast Radio Burst Morphology in the First CHIME/FRB Catalog
Not yet reviewed by Pith; the record is open.
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
Signed reviews
read the original abstract
We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB), using events from the first CHIME/FRB catalog. The catalog consists of 61 bursts from 18 repeating sources, plus 474 one-off FRBs, detected between 2018 July 25 and 2019 July 2. We identify four observed archetypes of burst morphology ("simple broadband," "simple narrowband," "temporally complex" and "downward drifting") and describe relevant instrumental biases that are essential for interpreting the observed morphologies. Using the catalog properties of the FRBs, we confirm that bursts from repeating sources, on average, have larger widths and we show, for the first time, that bursts from repeating sources, on average, are narrower in bandwidth. This difference could be due to a beaming or propagation effects, or it could be intrinsic to the populations. We discuss potential implications of these morphological differences for using FRBs as astrophysical tools.
Forward citations
Cited by 8 Pith papers
-
Two new highly scattered fast radio bursts: evidence for scatter broadening by the circumsource medium
FRB240312D is the first highly scattered FRB whose scattering screen is localized to within about 8 pc of the source, with the two new bursts implying a rate consistent with shorter FRBs.
-
Timing and statistical analysis of single-pulse search pulsar discoveries from the PALFA survey
Timing solutions for five PALFA rotating radio transients, spin periods for two more, and Bayesian energy and wait-time fits that support log-normal burst energies and near-Poisson burst times.
-
Detection of Partial Coherence due to Multipath Propagation for FRB 20220413B with CHIME/FRB
FRB 20220413B's components share a common Milky Way scintillation pattern but show no phase-coherent lensing signature, so the complex morphology is not confirmed as plasma lensing.
-
Unified kinetic theory of induced scattering: Compton, Brillouin, and Raman processes in magnetized electron and positron pair plasma
In strongly magnetized pair plasma, induced Compton and Brillouin scattering dominate in ordinary/neutral modes, while stimulated Raman scattering is enabled in a charged mode with growth rate (t_R)^-1 = a_e (omega0/o...
-
Fast Population Leakage in Astronomical Masers: Maser Amplification and Transient Superradiance
In a three-level maser model, a fast competing decay channel on the shared upper level does not automatically suppress superradiance; the 6.7 GHz methanol flare in S255IR-NIRS3 can still be reproduced when the leakage...
-
Semi-supervised morphological classification of fast radio bursts from the second CHIME/FRB catalogue
A simulation-trained convolutional autoencoder identifies three distinct FRB morphological classes and classifies repeatability with 86% recall.
-
Deriving the Energy Function of Non-repeaters from CHIME/FRB Baseband Data
Using 116 CHIME baseband non-repeaters, the energy function is Schechter-like at low redshift, but the high-redshift slope and rate evolution are too uncertain to choose between star-formation and old-stellar progenitors.
-
Rapid Response Triggering for Radio Transients with the SKA Observatory
SKA-Low and SKA-Mid should implement automated rapid-response triggering on external and internal alerts to enable early radio observations of diverse transients.
Discussion (0). Continue with ORCID to comment.