Yonetoku, D. and Murakami, T. (2005) GRB formation rate derived by the Ep-luminosity relation. Il nuovo cimento C, 28 (4\5). pp. 701-704. ISSN 1826-9885
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Abstract
We estimate a GRB formation rate based on the new relation between the spectral peak energy (Ep) and the peak luminosity. This relation is derived combining the data of Ep and the peak luminosities by BeppoSAX and BATSE, and it looks considerably tighter and more reliable than the relations suggested by the previous works. Using the new Ep-luminosity relation, we estimate redshifts of the 689 GRBs without known distances in the BATSE catalog and derive a GRB formation rate as a function of the redshift. For the redshift range of 0 ≤ z ≤ 2, the GRB formation rate increases and is well correlated with the star formation rate while it keeps constant toward z ∼ 12.
| 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: | Observational cosmology |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Mar 2020 13:39 |
| Last Modified: | 17 Mar 2020 13:39 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15856 |
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