Gendre, B. and Piro, L. and DePasquale, M. (2005) Systematic analysis of X-ray GRB afterglows observed with XMMNewton and Chandra. Il nuovo cimento C, 28 (4\5). pp. 509-512. ISSN 1826-9885
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Abstract
We present a sample of GRB afterglows observed in the X-ray band with XMM-Newton or Chandra, focusing on the brightest events. We have derived for this sample the temporal slope and the spectral index of the continuum, and used closure relationships to discriminate the afterglow environment for each burst. We show that jet features are excluded most of the time, while ISM and wind environments cannot be discriminated. We finally focus on GRB040106, whose environment can be constrained by the X-ray observations only. For this burst, we present a broad-band analysis and derive some constraints on the positions of characteristic frequencies.
| Item Type: | Article |
|---|---|
| Additional Information: | Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004. |
| Uncontrolled Keywords: | X-ray ; γ-rays sources; γ-ray bursts |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 16 Mar 2020 16:52 |
| Last Modified: | 16 Mar 2020 16:52 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15713 |
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