{ "id": "1504.00145", "version": "v1", "published": "2015-04-01T08:42:43.000Z", "updated": "2015-04-01T08:42:43.000Z", "title": "Nucleosynthesis of heavy elements in gamma ray bursts", "authors": [ "Agnieszka Janiuk", "Bartlomiej Kaminski" ], "comment": "6 pages, 2 figures; conference proceeding from Swift: 10 years of Discovery, held in Rome (2-5 Dec. 2014)", "categories": [ "astro-ph.HE" ], "abstract": "The ultrarelativistic jets responsible for prompt and afterglow emission in gamma ray bursts are presumably driven by a central engine that consists of a dense accretion disk around a spinning black hole. We consider such engine, composed of free nucleons, electron-positron pairs, Helium nuclei, and cooled by neutrino emission. A significant number density of neutrons in the disk provide conditions for neutron rich plasma in the outflows and jets. Heavy nuclei are also formed in the accretion flow, at the distances 150-250 gravitational radii from the black hole. We study the process of nucleosynthesis in the GRB engine, depending on its physical properties. Our results may have important observational implications for the jet deceleration process and heavy elements observed in the spectra of GRB afterglows.", "revisions": [ { "version": "v1", "updated": "2015-04-01T08:42:43.000Z" } ], "analyses": { "keywords": [ "gamma ray bursts", "heavy elements", "nucleosynthesis", "black hole", "important observational implications" ], "tags": [ "conference paper" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1357401 } } }