Rau, A. and Greiner, J. (2005) A survey for GRB orphan afterglows. Il nuovo cimento C, 28 (3). pp. 327-330. ISSN 1826-9885
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Abstract
Gamma-ray bursts are believed to be produced in highly-relativistic collimated outflows. Support for this comes among others from the association of the times of detected breaks in the decay of afterglow light curves with the collimation angle of the jets. An alternative approach to estimate a limit on the collimation angle uses GRB afterglows without detected prompt-emission counterparts. Here we report on the analysis of a dedicated survey for the search of these orphan afterglows using the Wide Field Imager at the 2.2m telescope at La Silla, Chile.
| 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: | Photography and photometry ; Astronomical observations. Visible (390–750 nm) ; γ-ray sources; γ-ray bursts |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 16 Mar 2020 09:57 |
| Last Modified: | 16 Mar 2020 09:57 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15623 |
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