The VLBA Imaging and Polarimetry Survey at 5 GHz

We present the first results of the VLBA Imaging and Polarimetry Survey(VIPS), a 5 GHz VLBI survey of 1,127 sources with flat radio spectra. Throughautomated data reduction and imaging routines, we have produced publiclyavailable I, Q, and U images and have detected polarized flux density from 37%of the sources. We have also developed an algorithm to use each source's Iimage to automatically classify it as a point-like source, a core-jet, acompact symmetric object (CSO) candidate, or a complex source. The mean ratioof the polarized to total 5 GHz flux density for VIPS sources with detectedpolarized flux density ranges from 1% to 20% with a median value of about 5%.We have also found significant evidence that the directions of the jets incore-jet systems tend to be perpendicular to the electric vector positionangles (EVPAs). The data is consistent with a scenario in which ~24% of thepolarized core-jets have EVPAs that are anti-aligned with the directions oftheir jet components and which have a substantial amount of Faraday rotation.In addition to these initial results, plans for future follow-up observationsare discussed