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Published online by Cambridge University Press: 19 July 2016
The region of the Virgo cluster is the subject of an intensive quasar search, since quasars mill provide valuable probes of absorption due to galaxy haloes or the intracluster medium. It is also interesting to test the quasar-galaxy association in such a region of the nearest major cluster of galaxies. More than 200 quasar candidates were found in the Virgo cluster region using both slitless technique and machine search, 32 of them have been confirmed as quasars.