{"paper":{"title":"RoboPol: The optical polarization of gamma-ray--loud and gamma-ray--quiet blazars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. C. S. Readhead, A. Kus, A. Mahabal, A. Marecki, A. N. Ramaprakash, D. Blinov, E. Angelakis, E. Paleologou, E. Pazderski, G. V. Panopoulou, I. Liodakis, I. Myserlis, I. Papadakis, I. Papamastorakis, J. A. Zensus, K. Tassis, M. Balokovic, M. Boettcher, M. Urry, N. Kylafis, O. G. King, P. Mao, P. Reig, S. Kiehlmann, S. Prabhudesai, T. Hovatta, T. J. Pearson, V. Pavlidou","submitted_at":"2016-09-01T13:51:27Z","abstract_excerpt":"We present average R-band optopolarimetric data, as well as variability parameters, from the first and second RoboPol observing season. We investigate whether gamma- ray--loud and gamma-ray--quiet blazars exhibit systematic differences in their optical polarization properties. We find that gamma-ray--loud blazars have a systematically higher polarization fraction (0.092) than gamma-ray--quiet blazars (0.031), with the hypothesis of the two samples being drawn from the same distribution of polarization fractions being rejected at the 3{\\sigma} level. We have not found any evidence that this dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00640","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"}