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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/035/03/0561-0564

    • Keywords

       

      𝛾-ray bursts: general; radiation mechanisms: non-thermal; methods: numerical.

    • Abstract

       

      We report our recent understanding about a tight correlation between relative spectral lag and luminosity (or redshift) for 𝛾-ray bursts. The latest investigations indicate that the empirical correlations got from BATSE bursts also exist for Swift/BAT ones. The special luminosity-lag correlation is much similar to that of the luminosity with pulse number proposed by Schaefer (2003), but largely different from most others ever discovered. Note that our newly built luminosity-lag correlation predicts that luminosity should evolve with cosmological redshift as 𝐿p ∝ (1 + 𝑧)2.4 ± 0.7 that is excellently confirmed by Salvaterra et al. (2012) and Geng & Huang (2013). In addition, it is also surprisingly found that the luminosity-lag correlation can account for both long and short Swift/BAT bursts, which might be an evidence of the same radiation mechanism for diverse burst groups.

    • Author Affiliations

       

      Z. B. Zhang1 2 H. C. Liu1 2 L. Y. Jiang1 2 D. Y. Chen1 2

      1. College of Science, Guizhou University, Guiyang 550025, China.
      2. The Joint Research Center for Astronomy between National Astronomical Observatories, Chinese Academy of Sciences and Guizhou University, Guizhou, China.
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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      Posted on January 27, 2016

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