Preliminary INTEGRAL Analysis of GRB040106
Abstract
On January 6th 2004, the IBAS burst alert system triggered the 8th gamma-ray burst (GRB) to be detected by the INTEGRAL satellite. The position was determined and publicly distributed within 12s, enabling ESA's XMM-Newton to take advantage of a ToO observation just 5 hours later during which the x-ray afterglow was detected. Observations at optical wavelengths also revealed the existence of a fading optical source. The GRB is ~52s long with 2 distinct peaks separated by ~24s. At gamma-ray energies the burst was the weakest detected by INTEGRAL up to that time with a flux in the 20-200 keV band of 0.57 photons/cm^2/s. Nevertheless, it was possible to determine its position and extract spectra and fluxes. Here we present light curves and the results of imaging, spectral and temporal analyses of the prompt emission and the onset of the afterglow from INTEGRAL data.
Cite
@article{arxiv.astro-ph/0404126,
title = {Preliminary INTEGRAL Analysis of GRB040106},
author = {L. Moran and L. Hanlon and A. von Kienlin and B. McBreen and S. McBreen and S. McGlynn and J. French and R. Preece and Y. Kaneko and O. R. Williams and K. Bennett and R. Marc Kippen},
journal= {arXiv preprint arXiv:astro-ph/0404126},
year = {2007}
}
Comments
4 pages. To appear in proceedings of the 5th INTEGRAL Workshop, "The INTEGRAL Universe", February 16-20, 2004, Munich. (Typos corrected in author addresses, some refs added)