Radio afterglow emission of GRBs Virtual Observatory Resource

Authors
  1. Levine D.
  2. Dainotti M.
  3. Zvonarek K.J.
  4. Fraija N.
  5. Warren D.C.
  6. Chandra P.,Lloyd-Ronning N.
  7. Published by
    CDS
Abstract

Gamma-ray burst (GRB) afterglow emission can be observed from sub-TeV to radio wavelengths, though only 6.6% of observed GRBs present radio afterglows. We examine GRB radio light curves (LCs) to look for the presence of radio plateaus resembling the plateaus observed at X-ray and optical wavelengths. We analyze 404 GRBs from the literature with observed radio afterglow and fit 82 GRBs with at least five data points with a broken power-law model, requiring four parameters. From these, we find 18 GRBs that present a break feature resembling a plateau. We conduct the first multiwavelength study of the Dainotti correlation between the luminosity La and the rest-frame time of break Ta* for those 18 GRBs, concluding that the correlation exists and resembles the corresponding correlation at X-ray and optical wavelengths after correction for evolutionary effects. We compare Ta* for the radio sample with Ta* values in X-ray and optical data, finding significantly later break times in the radio. We propose that this late break time and the compatibility in slope suggest either a long-lasting plateau or the passage of a spectral break in the radio band. We also correct the distribution of the isotropic energy Eiso versus the rest-frame burst duration T*90 for evolutionary effects and conclude that there is no significant difference between the T*90 distributions for the radio LCs with a break and for those without.

Keywords
  1. gamma-ray-astronomy
  2. gamma-ray-bursts
  3. redshifted
  4. astronomical-reference-materials
  5. radio-sources
Bibliographic source Bibcode
2022ApJ...925...15L
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https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/925/15
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/925/15

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History

2023-09-28T07:51:09Z
Resource record created
2023-09-28T07:51:09Z
Created
2023-09-28T07:53:56Z
Updated

Contact

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CDS support team
Postal Address
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