{"paper":{"title":"Polarization of prompt GRB emission: evidence for electromagnetically-dominated outflow","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) University of Rochester; Lebedev Physical Institute, (3) California Institute of Technology), Maxim Lyutikov (1), Roger Blandford (3) ((1) McGill University; CITA, V.I. Pariev (2)","submitted_at":"2003-05-22T19:25:35Z","abstract_excerpt":"Observations by the {\\RHESSI} satellite of large polarization of the prompt $\\gamma$-ray emission from the Gamma Ray Burst GRB021206 \\citep{coburn03} imply that the magnetic field coherence scale is larger than the size of the visible emitting region, $\\sim R/\\Gamma$, where $R$ is the radius of the flow, $\\Gamma$ is the associated Lorentz factor.\n  Such fields cannot be generated in a causally disconnected, hydrodynamically dominated outflow. Electromagnetic models of GRBs \\citep{lyutikov02}, in which large scale, dynamically dominant, magnetic fields are present in the outflow from the very b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0305410","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0305410/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"}