{ "id": "2107.03568", "version": "v1", "published": "2021-07-08T02:10:14.000Z", "updated": "2021-07-08T02:10:14.000Z", "title": "Nuclear fission chain reaction in cooling white dwarf stars", "authors": [ "C. J. Horowitz", "M. E. Caplan" ], "comment": "8 pages, 4 figures", "categories": [ "astro-ph.SR", "astro-ph.HE", "nucl-th" ], "abstract": "The first solids that form as a white dwarf (WD) starts to crystallize are expected to be greatly enriched in actinides. Previously [PRL 126, 1311010] we found that these solids might support a nuclear fission chain reaction that could ignite carbon burning and provide a new Type Ia supernova (SN Ia) mechanism involving an {\\it isolated} WD. Here we explore this fission mechanism in more detail and calculate the final temperature and density after the chain reaction and discuss a number of open physics questions.", "revisions": [ { "version": "v1", "updated": "2021-07-08T02:10:14.000Z" } ], "analyses": { "keywords": [ "nuclear fission chain reaction", "cooling white dwarf stars", "type ia supernova", "open physics questions", "ignite carbon" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }