{"paper":{"title":"Transition from Fireball to Poynting-flux-dominated Outflow in Three-Episode GRB 160625B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Biryukov, A. Castellon, A. Cwiek, A. F. Valeev, A. F. Zarnecki, A. J. Castro-Tirado, A. Kusakin, A. Moskvitin, A. Perkov, A. Pozanenko, A. Volnova, A. Zadrozny, B.-B. Zhang, B. Zhang, D. Frederiks, D. Svinkin, E. Ivanov, E. Katkova, E. Klunko, E. Mazaeva, F. K. Peng, F.-W. Zhang, G. Beskin, H. Gao, I. H. Park, J. C. Tello, L. Mankiewicz, L. Shao, M. D. Caballero-Garcia, M. Jelinek, N. Orekhova, O. Burhonov, P. Ferrero, P.-H. T. Tam, P. Minaev, Q.-W. Tang, R. Aptekar, R. Cunniffe, R. Inasaridze, R. Opiela, R. Sanchez-Ramirez, S. Bondar, S. B. Pandey, S. Jeong, S. Karpov, S. Oates, T. Fatkhullin, V. Rumyantsev, V. Sasyuk, V. V. Sokolov, X.-F. Wu, X.-Y. Wang, Y.-D. Hu, Z. G. Dai","submitted_at":"2016-12-09T17:04:54Z","abstract_excerpt":"The ejecta composition is an open question in gamma-ray bursts (GRB) physics. Some GRBs possess a quasi-thermal spectral component in the time-resolved spectral analysis, suggesting a hot fireball origin. Others show a featureless non-thermal spectrum known as the \"Band\" function, consistent with a synchrotron radiation origin and suggesting that the jet is Poynting-flux-dominated at the central engine and likely in the emission region as well. There are also bursts showing a sub-dominant thermal component and a dominant synchrotron component suggesting a likely hybrid jet composition. Here we"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.03089","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"}