N(HI) and jet power/emission in AGNs
  Neutral hydrogen (HI) 21 cm absorption has been detected against more and more powerful radio jets. In this work, based on the Guppta et al. 2006a sample, we present our preliminary study of the correlations between the HI column density N(HI) and the jet power, N(HI) versus the low frequency luminosity at 408MHz, and N(HI) versus the radio luminosity at 1400MHz. 
Zhongzu Wu, Minfeng Gu, Ming Zhu
astro-ph.HE