{"paper":{"title":"New constraints on the physical conditions in H$_2$-bearing GRB-host damped Lyman-$\\alpha$ absorbers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. de Ugarte Postigo, A. Rossi, C. C. Th\\\"one, C. Ledoux, D. A. Kann, D. H. Hartmann, D. Watson, J. Bolmer, J. Japelj, J.-K. Krogager, J. P. U. Fynbo, J. Selsing, K. E. Heintz, K. Wiersema, L. Izzo, L. Kaper, M. De Pasquale, N. R. Tanvir, P. Jakobsson, P. Noterdaeme, P. Petitjean, P. Schady, R. Salvaterra, R. Starling, S. Covino, S. D. Vergani, T. Zafar, V. D'Elia","submitted_at":"2019-08-06T18:19:38Z","abstract_excerpt":"We report the detections of molecular hydrogen (H$_2$), vibrationally-excited H$_2$ (H$^*_2$), and neutral atomic carbon (CI), in two new afterglow spectra of GRBs\\,181020A ($z=2.938$) and 190114A ($z=3.376$), observed with X-shooter at the Very Large Telescope (VLT). Both host-galaxy absorption systems are characterized by strong damped Lyman-$\\alpha$ absorbers (DLAs) and substantial amounts of molecular hydrogen with $\\log N$(HI, H$_2$) = $22.20\\pm 0.05,~20.40\\pm 0.04$ (GRB\\,181020A) and $\\log N$(HI, H$_2$) = $22.15\\pm 0.05,~19.44\\pm 0.04$ (GRB\\,190114A). The DLA metallicites, depletion leve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02309","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/1908.02309/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"}