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The flux-E p relation within GRB060218 in comparison with typical GRB pulses

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Abstract

The prompt gamma-ray/X-ray emission of gamma-ray burst (GRB) 060218 was simultaneously observed by the Burst Alert Telescope (BAT) and X-ray Telescope (XRT) onboard Swift. Its peak energy of the joint vf v spectrum (E p) clearly evolves with time from tens of keV to ∼1 keV, crossing both the BAT and XRT bands. The best fit yields log E p=(4.61±0.23)+(−1.29±0.08) log t, with a correlation coefficient of 0.98 and a chance probability of p<10−4. We derive its bolometric flux (F) in the 0.01–104 keV band, and find that its F-E p relation, with a power-law index of 0.37, is much shallower than that observed in typical GRB pulses. Discussion of this shallowness is presented.

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Authors and Affiliations

  1. Physical Science & Technology College, Guangxi University, Nanning, 530004, China

    Wei Dong, EnWei Liang & RuiJing Lu

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  1. Wei Dong
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  2. EnWei Liang
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  3. RuiJing Lu
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Correspondence to EnWei Liang.

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This work was supported by the National Basic Research Program of China (Grant No. 2009CB824800), the National Natural Science Foundation of China (Grant Nos. 10873002 and 10747001), Guangxi SHI-BAI-QIAN Project (Grant No. 2007201), the Program for 100 Young and Middle-aged Disciplinary Leaders in Guangxi Higher Education Institutions, and the Research Foundation of Guangxi University (Grant No. M30520).

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Dong, W., Liang, E. & Lu, R. The flux-E p relation within GRB060218 in comparison with typical GRB pulses. Sci. China Phys. Mech. Astron. 53 (Suppl 1), 78–81 (2010). https://doi.org/10.1007/s11433-010-0029-x

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  • DOI: https://doi.org/10.1007/s11433-010-0029-x

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