{ "id": "astro-ph/0611194", "version": "v1", "published": "2006-11-06T21:13:07.000Z", "updated": "2006-11-06T21:13:07.000Z", "title": "External Shocks, UHECRs, and the Early Afterglow of GRBs", "authors": [ "Charles D. Dermer" ], "comment": "6 pages, 1 figure, in Proc. of Swift and GRBs: Unveiling the Relativistic Universe, Venice, Italy, 5-9 June 2006", "journal": "Nuovo Cim.B121:1331-1336,2006", "doi": "10.1393/ncb/i2007-10254-5", "categories": [ "astro-ph" ], "abstract": "Highly variable gamma-ray pulses and X-ray flares in GRB light curves can result from external shocks rather than central engine activity under the assumption that the GRB blast-wave shell does not spread. Acceleration of cosmic rays to 10^{20} eV energies can take place in the external shocks of GRBs. Escape of hadronic energy in the form of UHECRs leads to a rapidly decelerating GRB blast wave, which may account for the rapid X-ray declines observed in Swift GRBs.", "revisions": [ { "version": "v1", "updated": "2006-11-06T21:13:07.000Z" } ], "analyses": { "subjects": [ "98.70.Rz", "95.85.Ry" ], "keywords": [ "external shocks", "early afterglow", "rapid x-ray declines", "grb light curves", "rapidly decelerating grb blast wave" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "inspire": 731039 } } }