{"paper":{"title":"Cool-Core Clusters : Role of BCG, Star Formation & AGN-Driven Turbulence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Arif Babul, Deovrat Prasad, Prateek Sharma","submitted_at":"2018-01-12T19:00:12Z","abstract_excerpt":"Recent analysis shows that it is important to explicitly include the gravitational potential of the central brightest central galaxy (BCG) to infer the acceleration due to gravity ($g$) and the free-fall time ($t_{\\rm ff} \\equiv [2r/g]^{1/2}$) in cool cluster cores. Accurately measuring $t_{\\rm ff}$ is crucial because according to numerical simulations cold gas condensation and strong feedback occur in cluster cores with min($t_{\\rm cool}/t_{\\rm ff}$) below a threshold value close to 10. Recent observations which include the BCG gravity show that the observed threshold in min($t_{\\rm cool}/t_{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.04282","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"}