EDP Sciences
Free access
Volume 443, Number 3, December I 2005
Page(s) 747 - 752
Section Astrophysical processes
DOI http://dx.doi.org/10.1051/0004-6361:20041514

A&A 443, 747-752 (2005)
DOI: 10.1051/0004-6361:20041514

Gamma-ray bursts' spectra and synchro-curvature mechanism

X. L. Deng1, T. S. Xia2 and J. Liu3

1  University of Kentucky, USA
    e-mail: Yuqian.Zhang@uky.edu
2  University of Texas at Austin, USA
3  University of Science and Technology of China, PR China

(Received 23 June 2004 / Accepted 21 May 2005 )

We apply the synchro-curvature mechanism instead of the synchrotron one to explain the spectra of gamma-ray bursts (hereafter, GRBs), especially those with both a turnoff point and high energy excess, which are often explained by combining with some other processes. We fit several spectra and get very good results. Our mechanism can give more detailed descriptions of the magnetic fields and strict constraints on the formation mechanism, thus it is helpful for understanding the physical processes in GRBs.

Key words: gamma rays: bursts -- radiation mechanisms: non-thermal -- magnetic fields

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