XMM monitoring of the Seyfert Galaxy NGC 4151: Probing the Disk-Wind Connection

Recent Xray observations of NGC 4151 have revealed dramatic changes in theXray absorption due to bulk motion of the gas across our lineofsight. Basedon photoionization models, much of this component must lie within 0.1 pc of thecentral source, which, combined with the large transverse velocity, suggeststhat the absorber arises in a diskdriven wind, making NGC 4151 the only Seyfert1 to have shown direct evidence of this phenomenon. We propose a series of 4 newXMMNewton observations of NGC 4151, of 40 ksec each, to fully constrain thekinematics, location, and physical conditions of the highcolumn Xray aborber,and probe the relative effects of radiation driving, thermal pressure, andmagnetocentrifugal forces in accelerating the gas. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]