Description

We study the evolution with redshift of three measures of gamma-ray burst (GRB) duration (T[subscript 90], T[subscript 50] and TR[subscript 45]) in a fixed rest-frame energy band for a sample

We study the evolution with redshift of three measures of gamma-ray burst (GRB) duration (T[subscript 90], T[subscript 50] and TR[subscript 45]) in a fixed rest-frame energy band for a sample of 232 Swift/Burst Alert Telescope (BAT) detected GRBs. Binning the data in redshift we demonstrate a trend of increasing duration with increasing redshift that can be modelled with a power law for all three measures. Comparing redshift defined subsets of rest-frame duration reveals that the observed distributions of these durations are broadly consistent with cosmological time dilation.

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Date Created
  • 2014-11-11
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  • Text
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    Identifier
    • Digital object identifier: 10.1093/mnras/stu1767
    • Identifier Type
      International standard serial number
      Identifier Value
      2470-0053
    • Identifier Type
      International standard serial number
      Identifier Value
      2470-0045

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    Littlejohns, O. M., & Butler, N. R. (2014). Investigating signatures of cosmological time dilation in duration measures of prompt gamma-ray burst light curves. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 444(4), 3948-3960. http://dx.doi.org/10.1093/mnras/stu1767

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