{ "id": "1612.09442", "version": "v1", "published": "2016-12-30T10:12:09.000Z", "updated": "2016-12-30T10:12:09.000Z", "title": "Padé approximant for the equation of motion of a supernova remnant", "authors": [ "Lorenzo Zaninetti" ], "comment": "10 pages", "journal": "Journal of High Energy Physics, Gravitation and Cosmology,(2017),3, 78-86", "doi": "10.4236/jhepgc.2017.31011", "categories": [ "astro-ph.GA" ], "abstract": "In this paper we derive three equations of motion for a supernova remnant (SNR) in the framework of the thin layer approximation using the Pad\\'e approximant. The circumstellar medium is assumed to follow a density profile of either an exponential type, a Gaussian type, or a Lane--Emden ($n=5$) type. The three equations of motion are applied to four SNRs: Tycho, Cas A, Cygnus loop, and SN~1006. The percentage error of the Pad\\'e approximated solution is always less than $10\\%$. The theoretical decrease of the velocity over ten years for SNRs is evaluated.", "revisions": [ { "version": "v1", "updated": "2016-12-30T10:12:09.000Z" } ], "analyses": { "keywords": [ "supernova remnant", "thin layer approximation", "pade approximant", "circumstellar medium", "pade approximated solution" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable" } } }