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

ar X iv : a st ro - p h / 00 06 29 0 v 1 2 1 Ju n 20 00 Gas Rich Dwarfs from the PSS - II III . H I Profiles and Dynamical Masses

We present Arecibo neutral hydrogen data on a sample of optically selected dwarf galaxies.

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

Outflows up to 1500 km s −1 of atomic neutral hydrogen are detected in a growing number of radio galaxies. Outflows with similar velocities are also detected in ionized gas, suggesting a common origin for the extreme kinematics of these two phases of the gas. The high detection rate of such outflows in young (or restarted) radio sources appears to be related to the existence of a dense ISM arou...

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 49 0 v 1 2 0 O ct 2 00 4 Radiation Processes in GRBs . Prompt Emission Mikhail

A substantial fraction of prompt GRB spectra have soft spectral indexes exceeding the maximum allowed by the synchrotron model αmax = −2/3. Some spectra also exhibit very sharp break at Ep, inconsistent with the smooth synchrotron spectra. These facts pose a serious problem for the “optically thin synchrotron” interpretation of the prompt emission. We review various models suggested in order to...

ar X iv : a st ro - p h / 04 10 65 7 v 1 27 O ct 2 00 4 Detection of the linear radical HC 4 N in IRC + 10216

We report the detection of the linear radical HC 4