{"paper":{"title":"A comparison of pre-existing $\\Lambda$CDM predictions with the abundance of {\\it JWST} galaxies at high redshift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Carlos S. Frenk, Carlton M. Baugh, Cedric G. Lacey, John C. Helly (Durham-ICC), Shaun Cole, Shengdong Lu, Sownak Bose","submitted_at":"2024-06-04T18:00:01Z","abstract_excerpt":"Observations with the {\\it James Webb Space Telescope} have revealed a high abundance of bright galaxies at redshift, $z\\gtrsim 12$, which has been widely interpreted as conflicting with the $\\Lambda$CDM model. In Cowley et al. (2018) predictions were made -- prior to the {\\it JWST} observations -- for the expected abundance of these galaxies using the Durham semi-analytic galaxy formation model, {\\sc galform}, which is known to produce a realistic population of galaxies at lower redshifts including the present day. Key to this model is the assumption of a ``top-heavy\" initial mass function of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.02672","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2406.02672/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"}