ar X iv : a st ro - p h / 06 06 69 3 v 1 2 8 Ju n 20 06 Neutral gas density in Damped Lyman α systems

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 06 56 7 v 1 2 4 Ju n 20 04 1

ar X iv : a st ro - p h / 06 06 69 2 v 1 2 8 Ju n 20 06 New Approaches for Modeling Type Ia Supernovae

Type Ia supernovae (SNe Ia) are the largest thermonuclear explosions in the Universe. Their light output can be seen across great distances and has led to the discovery that the expansion rate of the Universe is accelerating. Despite the significance of SNe Ia, there are still a large number of uncertainties in current theoretical models. Computational modeling offers the promise to help answer...

ar X iv : a st ro - p h / 06 06 25 1 v 1 1 1 Ju n 20 06 A hot transient jet from η Carinae

η Carinae (η Car) is a stellar binary system with a period of 5.54 years. It harbors one of the brightest and most massive stars in our galaxy. This paper presents spectroscopic evidence for a fast (up to 2,000 km s) X-ray jet of ionized gas launched from η Car just before what is believed to be the binary periastron (point of smallest binary separation). By analogy with jets in other astrophys...

ar X iv : a st ro - p h / 03 06 44 3 v 1 2 3 Ju n 20 03 MAGNETIC FIELDS IN COSMOLOGY

Different mechanisms which may possibly explain existence of magnetic fields on astronomically large scales are described. A recently suggested model of magnetic fields generation slightly before hydrogen recombination is discussed in more detail.