{"paper":{"title":"The THESAN project: galaxy sizes during the epoch of reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Aaron Smith, Anna-Christina Eilers, Enrico Garaldi, Evan Erickson, Guochao Sun, Hui Wang, Josh Borrow, Lars Hernquist, Mark Vogelsberger, Oliver Zier, Rahul Kannan, Sandro Tacchella, Takahiro Morishita, Xuejian Shen, Yongao Hu","submitted_at":"2024-02-13T19:00:00Z","abstract_excerpt":"We investigate galaxy sizes at redshift $z\\gtrsim 6$ with the cosmological radiation-magneto-hydrodynamic simulation suite THESAN(-HR). These simulations simultaneously capture the reionization of the large-scale intergalactic medium and resolved galaxy properties. The intrinsic size ($r^{\\ast}_{1/2}$) of simulated galaxies increases moderately with stellar mass at $M_{\\ast} \\lesssim 10^{8}\\,{\\rm M}_{\\odot}$ and decreases fast at larger masses, resulting in a hump feature at $M_{\\ast}\\sim 10^{8}\\,{\\rm M}_{\\odot}$ that is insensitive to redshift. Low-mass galaxies are in the initial phase of si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.08717","kind":"arxiv","version":3},"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/2402.08717/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"}