High-resolution simulations demonstrate that two-zone models for GRB early afterglows fail to match hydrodynamic evolution in the Newtonian reverse shock regime before Blandford-McKee self-similarity, causing systematic overpredictions of emission depending on the transition prescription.
Radio Transients from Gamma-Ray Bursters
2 Pith papers cite this work. Polarity classification is still indexing.
2
Pith papers citing it
abstract
The rapid time variability of gamma-ray bursts implies the sources are very compact, and the peak luminosities are so high that some matter must be ejected at ultra-relativistic speeds. The very large Lorentz factors of the bulk flow are also indicated by the very broad and hard spectra. It is natural to expect that when the relativistic ejecta interact with the interstellar matter a strong synchrotron radio emission is generated, as is the case with supernova remnants and radio galaxies. We estimate that the strongest gamma-ray bursts may be followed by radio transients with peak fluxes as high as 0.1 Jy. The time of peak radio emission depends on the distance scale; it is less than a minute if the bursts are in the galactic halo, and about a week if the bursts are at cosmological distances.
fields
astro-ph.HE 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Multi-band data for GRB 241025A require an ad-hoc factor-500 increase in shocked-material optical depth to match the observed radio spectral evolution within a structured-jet forward-shock model.
citing papers explorer
-
Systematic Error in Approximate Models of the GRB Early Afterglow
High-resolution simulations demonstrate that two-zone models for GRB early afterglows fail to match hydrodynamic evolution in the Newtonian reverse shock regime before Blandford-McKee self-similarity, causing systematic overpredictions of emission depending on the transition prescription.
-
Colour evolution in the radio afterglow of GRB 241025A
Multi-band data for GRB 241025A require an ad-hoc factor-500 increase in shocked-material optical depth to match the observed radio spectral evolution within a structured-jet forward-shock model.