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ivo-id="ivo://CDS">CDS</publisher><creator><name>Hutsemekers D.</name></creator><creator><name>Cabanac R.</name></creator><creator><name>Lamy H.</name></creator><creator><name>Sluse D.</name></creator><date role="Updated">2017-10-09T13:34:25Z</date><date role="Created">2008-07-22T10:44:23Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>quasars</subject><subject>polarimetry</subject><description>Based on a new sample of 355 quasars with significant optical polarization and using complementary statistical methods, we confirm that quasar polarization vectors are not randomly oriented over the sky with a probability often in excess of 99.9%.</description><source 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