{"paper":{"title":"The Lyman Alpha Forest from Gravitational Collapse in the CDM+Lambda Model","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Jeremiah P. Ostriker, Jordi Miralda-Escude, Michael Rauch, Renyue Cen","submitted_at":"1995-11-02T22:04:51Z","abstract_excerpt":"We model the $\\lya$ forest in a spatially flat, CDM model with $\\Omega=0.4$, with an Eulerian hydrodynamic simulation, and find that the intergalactic, photoionized gas collapses into sheet-like and filamentary structures which produce absorption lines like those observed in the $\\lya$ forest. A typical filament is $\\sim 1 h^{-1} \\mpc$ long with thickness $\\sim 50-100 h^{-1} \\kpc$ (in proper units), and baryonic mass $\\sim 10^{10} h^{-1} \\msun$. The gas temperature increases with time as structures with larger velocities collapse gravitationally.\n  The predicted distributions of column densiti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9511013","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9511013/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}