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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/035/03/0513-0515

    • Keywords

       

      𝛾-rays: bursts; spectral lag; GRB pulse.

    • Abstract

       

      We analyse the spectral lag evolution of 𝛾-ray burst (GRB) pulses with observations by CGRO/BATSE. No universal spectral lag evolution feature and pulse luminosity-lag relation within a GRB is observed.Our results suggest that the spectral lag would be due to radiation physics and dynamics of a given emission episode, possibly due to the longer lasting emission in a lower energy band, and the spectral lag may not be an intrinsic parameter to discriminate the long and short GRBs.

    • Author Affiliations

       

      Lan-Wei Jia1 Yun-Feng Liang2 En-Wei Liang2 3

      1. Department of Physics, Guangzhou University, Guangzhou 510006, China.
      2. Department of Physics and GXU-NAOC Centre for Astrophysics and Space Sciences, Guangxi University, Nanning 530004, China.
      3. Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, China.
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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