Ghirlanda, G. and Ghisellini, G. and Lazzati, D. and Firmani, C. (2005) The updated Epeak-Eγ correlation in GRBs. Il nuovo cimento C, 28 (3). pp. 303-306. ISSN 1826-9885
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Abstract
The recently discovered correlation between the rest frame GRB peak spectral energy Epeak and the collimation corrected energy Eγ in long GRBs is potentially very important, yet awaits confirmation from an independent sample. It may help to shed light on the radiation mechanism of the prompt GRB phase and on the way—and in which form—the energy is released from the central engine. We here present some additional evidence for the correlation (two new bursts) and rederive the best-fit parameters. The tightness of the correlation is confirmed (σ = 0.1 dex). We show that this correlation allows us, for the first time, to use GRBs as cosmological probes to constrain the expansion history of the universe.
| Item Type: | Article |
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| Additional Information: | Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004. |
| Uncontrolled Keywords: | γ-ray sources.; γ-ray bursts |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 15 Mar 2020 12:00 |
| Last Modified: | 15 Mar 2020 12:00 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15584 |
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