Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-09-15
The Astrophysical Journal Letters, Volume 713, Issue 1, pp. L55-L58 (2010)
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
7 pages, 5 figures, Appeared in ApJL, Volume 713, Issue 1, pp. L55, 2010
Scientific paper
Light curves are calculated for an off-axis observer due the scattering of primary radiation by extended baryonic material. The unusually long duration and the chromaticity of the light curves above several KeV of XRF 060218 can be explained as a result of the acceleration of the baryonic scattering material by the primary radiation. The observed light curves by our model and detailed fits to the data are presented. The model predicts that $\sim 4\times 10^{48}$ ergs are put into accelerated, mildly relativistic baryons by the radiation pressure at large radii from the central engine. It is suggested that the emission below 3 KeV, which lies {\it below} the Amati relation, is a baryon contaminated fireball.
Eichler David
Mandal Samir
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