Swift Observations of GRB 051109B
Astrophysics
2010-11-11 v1
Abstract
We present Swift observations of GRB 051109B, a soft long burst triggered by the Burst Alert Telescope (BAT). The soft photon index of the prompt emission suggest it is a X-ray Flash (XRF) or, at least, a X-ray Rich (XRR) burst. The X-ray lightcurve displays the canonical shape of many other GRBs, a double b roken power law with a small flare superimposed at ~T_0+1500 s, and its extrapolation to early times smoothly joins with the BAT lightcurve. On the basis of the derived optical to X-ray flux ratio, it cannot be classified as a dark burst.
Cite
@article{arxiv.astro-ph/0701855,
title = {Swift Observations of GRB 051109B},
author = {E. Troja and G. Cusumano and V. LaParola and V. Mangano and T. Mineo},
journal= {arXiv preprint arXiv:astro-ph/0701855},
year = {2010}
}
Comments
2 pages, 1 figure. Proceedings of "SWIFT and GRBs: Unveiling the Relativistic Universe" June 5-9, 2006 Venice (Italy)