MG11 
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Virgo Data Analysis for C6 and C7 engineering runs

The interferometric gravitational wave detector Virgo is completing the commissioning phase, and it is close to start scientific data taking. In 2005, before a temporary shutdown of the interferometer, two commissioning runs were perfomed: the C6 run from July 29th to August 12th, and the C7 run from September 14th to 19th. The sensitivity of the detector during these commissioning runs was not yet at a level interesting for scientific observations. However, the bandwidth and stability of the detector is already sufficient to perform interesting studies in preparation for the acquisition and analysis of science grade data. The data have therefore been analyzed by the Virgo physics groups, with the goal of testing the analysis pipelines and develop veto strategies. The results allowed also a better understanding of the noise sources, thus providing useful feedback to the commissioning team. In this talk I will review the analysis work done on this data, highlighting the main technical results and discussing the observational perspectives in the forecoming science runs.