Constraints on the late X-ray emission from the low-energy GRB 031203: INTEGRAL data
arXiv:astro-ph/0605494 · doi:10.1134/S1063773706050021
Abstract
Comparison of the INTEGRAL upper limits on the hard X-ray flux before and after the low-energy GRB 031203 with the XMM measurements of the dust-scattered radiation at lower energies suggests that a significant fraction of the total burst energy could be released in the form of soft X-rays at an early afterglow stage with a characteristic duration of ~100-1000s. The overall time evolution of the GRB 031203 afterglow may have not differed qualitatively from the behavior of standard (i.e., more intense) bursts studied by the SWIFT observatory. The available data also admit the possibility that the dust-scattered radiation was associated with an additional soft component in the spectrum of the gamma-ray burst itself.
9 pages, 3 figures
References in corpus (9)
- Bright X-ray Flares in Gamma-Ray Burst Afterglows
- Scattering by Interstellar Dust Grains. II. X-Rays
- SN 2003lw and GRB 031203: A Bright Supernova for a Faint Gamma-ray Burst
- The sub-energetic GRB 031203 as a cosmic analogue to GRB 980425
- The Host Galaxy of GRB 031203: Implications of its low metallicity, low redshift, and starburst nature
- An apparently normal gamma-ray burst with an unusually low luminosity
- A very low luminosity X-ray flash: XMM-Newton observations of GRB 031203
- The discovery of an evolving dust scattered X-ray halo around GRB 031203
- The soft X-ray blast in the apparently sub-luminous GRB 031203