ar X iv : a st ro - p h / 97 01 22 9 v 1 2 9 Ja n 19 97 Molecular Gas in Quasar Hosts

ar X iv : a st ro - p h / 97 01 22 8 v 1 2 9 Ja n 19 97 Large - scale Structures revealed by Wavelet Decomposition 1

ar X iv : a st ro - p h / 96 01 12 9 v 1 2 3 Ja n 19 96 Is Her X - 1 a strange star

The possible identification of Her X-1 with a strange star (Li et al. 1995) is shown to be incorrect.

ar X iv : a st ro - p h / 97 09 22 7 v 1 2 4 Se p 19 97 Limits on the Variability of Physical Constants

We have compared the frequency of high-redshift Hydrogen HI 21 cm absorption with that of associated molecular absorption in two quasars to place new (1 sigma) upper limits on any variation in y ≡ gpα 2 (where α is the fine structure constant and gp is the proton g-factor) of ∆y/y < 5 × 10 −6 at redshifts z = 0.25 and z = 0.68.

ar X iv : a st ro - p h / 98 01 07 4 v 1 9 J an 1 99 8 Simulating Gas at High Redshift

We discuss simulations of gas at high redshift. We briefly review the methods used and the results for quasar absorption lines. We present gas mass functions and galaxy correlation functions for 5 different cosmological models. Galaxies should be detectable at redshifts greater than 2 by SKAI, and measurements of the gas mass functions and galaxy correlation functions could be used to discrimin...

ar X iv : a st ro - p h / 97 06 19 2 v 1 1 8 Ju n 19 97 Metal Abundance in the Solar

It is shown that the metal abundance in the solar interior is constrained from the current solar neutrino experiment, even if one allows neutrino conversion in the sun due to neutrino oscillation. The result shows that the metal abundance in the interior should be within the range 0.4–1.4 times that in the surface, supporting the idea that the sun formed by a contraction of a gas cloud with an ...