{"paper":{"title":"Causal configurations of homogeneous energy density in general relativity","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"P. S. Negi","submitted_at":"2004-03-20T10:55:44Z","abstract_excerpt":"If the causality condition [the speed of sound always remains less than that of light in vacuum, i. e., $v \\leq c = 1$] is imposed on the spheres of homogeneous energy density, the `ratio of the specific heats', $\\gamma \\leq 2.59457$, constraints the compaction parameter, $u [\\equiv (M/a)$, mass to size ratio in geometrized units] of the dynamically stable configurations $ \\leq 0.34056 $ [corresponding to a surface redshift $(z_a) \\leq 0.771$]. Apparently, The maximum value of $u$ obtained in this manner belongs to an absolute upper bound, and gives: (i) The maximum value for static neutron st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0403492","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}