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Energy Dependence of Profile Width in Short Gamma-Ray Bursts |
| YANG Yu-xuan1,2;CHE Hai-hong3,2;WU Mei2;CAO Sheng-lin1 |
| 1Department of Astronomy, Beijing Normal University, Beijing 100875
2High Energy Astrophysics Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
3Shaanxi Astronomical Observatory, Chinese Academy of Sciences, Lintong 710600
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| Cite this article: |
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YANG Yu-xuan, CHE Hai-hong, WU Mei et al 1997 Chin. Phys. Lett. 14 797-800 |
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Abstract Using the high time-resolution and 64ms resolution data of the burst and transient source experiment, we performed an autocorrelation analysis of the energy dependence of burst pulse width in short gamma-ray bursts. A method free from potential cosmological effects has been proposed. This allows us to use a sample with a size comparable to that used for long and bright bursts. Our result shows that the profiles of short bursts exhibit a very good power-law between profile width and photon energy, with an index ~ -0.3. This result is consistent with a united origin of the bimodal distribution.
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| Keywords:
95.85.Pw
98.70.Rz
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Published: 01 October 1997
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