How unusual is XRF 060218 ?

Abstract

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.

7 pages, 5 figures, Appeared in ApJL, Volume 713, Issue 1, pp. L55, 2010

References in corpus (6)

• The shock break-out of GRB 060218/SN 2006aj
• An optical supernova associated with the X-ray flash XRF 060218
• Relativistic ejecta from XRF 060218 and the rate of cosmic explosions
• Temporal Profiles and Spectral Lags of XRF 060218
• Spectral Lags Explained as Scattering from Accelerated Scatterers
• A Model for Fast Rising, Slowly Decaying Subpulses in Gamma-Ray Bursts

Cited by in corpus (5)

• Multimessenger astronomy with gravitational waves and high-energy neutrinos
• Jet or Shock Breakout? The Low-Luminosity GRB 060218
• Multi-wavelength radiation models for low-luminosity GRBs, and the implications for UHECRs
• Revisiting GRB 060218: new insights into low-luminosity gamma-ray bursts from a revised shock breakout model
• Standard GRB, Dirty Fireballs, and the Excluded Middle