{"paper":{"title":"Early polarization observations of the optical emission of gamma-ray bursts: GRB150301B and GRB150413A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Gabovich, A. G. Tlatov, A. Kniazev, A. S. Kuznetsov, A. V. Parhomenko, C. Lopez, C. Mallamaci, C. Saffe, D. A. Kuvshinov, D. Buckley, D. V. Dormidontov, D. Vlasenko, E. Popova, E. S. Gorbovskoy, F. Podest, H. Levato, I. A. Gorbunov, I. S. Zalozhnich, K. I. Ivanov, M. Kotze, N. M. Budnev, N. V. Tyurina, O. A. Gress, P. V. Balanutsa, R. Alberto Castro-Tirado, R. Sanchez-Ramrez, S. A. Yazev, S. Potter, V. A. Senik, V. G. Kornilov, V. M. Lipunov, V. V. Chazov, V. V. Krushinski, V. V. Yurkov, Yu. P. Sergienko","submitted_at":"2015-11-09T11:27:05Z","abstract_excerpt":"We report early optical linear polarization observations of two gamma-ray bursts made with the MASTER robotic telescope network. We found the minimum polar- ization for GRB150301B to be 8% at the beginning of the initial stage, whereas we detected no polarization for GRB150413A either at the rising branch or after the burst reached the power-law afterglow stage. This is the earliest measurement of the polarization (in cosmological rest frame) of gamma-ray bursts. The primary intent of the paper is to discover optical emission and publish extremely rare (unique) high- quality light curves of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.02641","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":""},"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"}