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    • Keywords


      Radiation mechanisms: non-thermal; 𝛾-rays: bursts.

    • Abstract


      A joint spectral analysis for early bright X-ray flares that were simultaneously observed with Swift BAT and XRT are present. Both BAT and XRT lightcurves of these flares are correlated. Our joint spectral analysis shows that the radiations in the two energy bands are from the same spectral component, which can be well fitted with a single power-law. Except for the flares in GRBs 060904B and 100906A, the photon spectral indices are < 2.0, indicating the peak energies (𝐸p) of the prompt 𝛾-rays should be above the high energy end of the BAT band.

    • Author Affiliations


      Fang-Kun Peng1 You-Dong Hu1 Xiang-Gao Wang1 Rui-Jing Lu1 En-Wei Liang1 2

      1. Department of Physics, Guangxi University, Nanning 530004, China.
      2. Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China.
    • Dates

  • Journal of Astrophysics and Astronomy | News

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