{"paper":{"title":"The 2dF Galaxy Redshift Survey: Spherical Harmonics analysis of fluctuations in the final catalogue","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alan Heavens, Andy Taylor, Bruce A. Peterson, Carlos S. Frenk, Carlton M. Baugh, Carole Jackson, Chris Collins, Daniel Burkey, Gavin Dalton, George Efstathiou, Ian Lewis, John A. Peacock, Joss Bland-Hawthorn, Karl Glazebrook, Keith Taylor (the 2dFGRS team), Matthew Colless, Ofer Lahav, Peder Norberg, Richard S. Ellis, Roberto De Propris, Russell Cannon, Shaun Cole, Simon P. Driver, Steve Maddox, Stuart Lumsden, Terry Bridges, Warrick Couch, Will J. Percival, Will Sutherland","submitted_at":"2004-06-23T13:42:47Z","abstract_excerpt":"We present the result of a decomposition of the 2dFGRS galaxy overdensity field into an orthonormal basis of spherical harmonics and spherical Bessel functions. Galaxies are expected to directly follow the bulk motion of the density field on large scales, so the absolute amplitude of the observed large-scale redshift-space distortions caused by this motion is expected to be independent of galaxy properties. By splitting the overdensity field into radial and angular components, we linearly model the observed distortion and obtain the cosmological constraint Omega_m^{0.6} sigma_8=0.46+/-0.06. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0406513","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"}