{"paper":{"title":"Feedback-Free Star Formation in Clusters within a Galaxy Simulated at High Resolution in Cosmic Dawn","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Avishai Dekel, Hou-Zun Chen, Nir Mandelker, Xi Kang, Zhaozhou Li, Zhiyuan Yao","submitted_at":"2026-06-10T19:02:44Z","abstract_excerpt":"We perform a cosmological zoom-in simulation of a massive galaxy ($M_s\\sim10^{10}\\rm M_\\odot$ at $z\\sim10$) using the GIZMO code. By employing $\\leq 3\\rm pc$ resolution and a $3.4\\rm Myr$ supernova feedback delay, we capture the feedback-free starbursts (FFB) in clusters. The simulation reproduces FFB model predictions and super-bright galaxies observed by JWST. At $z\\sim10$, cold streams feed a compact galaxy ($R_{\\rm e}\\sim1\\rm kpc$), with stellar and surface densities ($>10^5\\rm cm^{-3}$, $>10^5\\rm M_\\odot pc^{-2}$) exceeding FFB thresholds. The global star-formation efficiency (SFE) is $\\v"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12605","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/2606.12605/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"}