ar X iv : a st ro - p h / 04 10 22 2 v 1 8 O ct 2 00 4 Outflows of neutral ( and ionized ) gas in radio galaxies

ar X iv : a st ro - p h / 04 10 55 8 v 1 2 3 O ct 2 00 4 Extended Neutral Gas Around z ∼ 0 . 5 Galaxies

I review current results from searching for galaxies giving rise to damped Lyα absorbers (DLAs) at z < 1. Using 14 confirmed DLA galaxies, I further show that intermediate-redshift galaxies possess large H I envelope out to 24−30 h kpc radius. The photometric and spectral properties of these galaxies confirm that DLA galaxies are drawn from the typical field population, and not from a separate ...

ar X iv : a st ro - p h / 06 10 10 7 v 1 4 O ct 2 00 6 Simulations of the interaction 1 of cold gas with radio jets

7 A new scenario for the interaction of a jet with a background medium with cold 8 clouds is investigated by means of hydrodynamic turbulence simulations with cool9 ing. The idea is that the cold clouds are overtaken by a radio cocoon and stirred 10 up by turbulence in this cocoon. The 2D multiphase turbulence simulations contain 11 all the three gas phases and have a number of interesting prop...

ar X iv : a st ro - p h / 04 10 02 2 v 1 1 O ct 2 00 4 High velocity HI in NGC 6946 and extra - planar gas in NGC 253

Multi-wavelength observations of nearby spiral galaxies have shown that neutral and ionized gas are present up to a few kpc from the disk and that star formation and supernovae probably play an important role in bringing gas into the halo. We have obtained very sensitive H i observations of the face-on galaxy NGC 6946 and of the nearly edge-on starburst galaxy NGC 253. We find high velocity H i...

ar X iv : a st ro - p h / 02 10 42 8 v 1 1 8 O ct 2 00 2 Star Clusters in Interacting Galaxies : The Case of M 51 Nate

ar X iv : a st ro - p h / 04 10 29 7 v 1 1 2 O ct 2 00 4 Multiwavelength evidence of the physical processes in radio jets

Over the last few years, high-quality X-ray imaging and spectroscopic data from Chandra and XMM-Newton have added greatly to the understanding of the physics of radio jets. Here we describe the current state of knowledge with an emphasis on the underlying physics used to interpret multiwavelength data in terms of physical parameters.