{"paper":{"title":"A universal angular momentum profile for galactic halos","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Anatoly A. Klypin (3), Andrey V. Kravtsov (1), Avishai Dekel (2), Cristiano Porciani (2), James S. Bullock (1), Joel R. Primack (4) ((1) Ohio State (2) Hebrew University (3) New Mexico State (4) UC Santa Cruz), Tsafrir S. Kolatt (2)","submitted_at":"2000-11-01T03:00:31Z","abstract_excerpt":"[Abridged] We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the LCDM cosmology. We find that the cumulative mass distribution of specific angular momentum, j, in a halo of mass Mv is well fit by a universal function, M(<j) = Mv \\mu j/(j_0+j). This profile is defined by one shape parameter (\\mu or j_0) in addition to the global spin parameter \\lambda. It follows a power-law over most of the mass, and flattens at large j, with the flattening more pronounced for small values of \\mu. Compared to a uniform sphere in solid-body"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0011001","kind":"arxiv","version":2},"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"}