ar X iv : a st ro - p h / 02 12 36 9 v 1 1 7 D ec 2 00 2 Dark Energy and the Hubble Age

ar X iv : a st ro - p h / 02 12 56 6 v 1 3 0 D ec 2 00 2 Dark Energy : Is it Q or Λ ?

New observations of Cosmic Microwave Background Anisotropies, Su-pernovae luminosity distances and Galaxy Clustering are sharpening our knowledge about dark energy. Here we present the latest constraints.

ar X iv : a st ro - p h / 02 12 36 9 v 2 9 J an 2 00 3 Dark Energy and the Hubble Age

I point out that an effective upper limit of approximately 20 Gyr (for a Hubble constant of 72 km/s/Mpc) or alternatively on the H 0-independent quantity H 0 t 0 < 1.47, exists on the age of the Universe, essentially independent of the unknown equation of state of the dominant dark energy component in the Universe. Unless astrophysical constraints on the age of the Universe can convincingly red...

ar X iv : a st ro - p h / 02 11 45 7 v 2 1 0 D ec 2 00 2 Time variation of fundamental constants : two phenomenological models

Time variation of fundamental constants, a strong signal of new physics, is analyzed comparing extant data with two phenomenological models. Results are discussed.

ar X iv : a st ro - p h / 05 12 61 7 v 1 2 7 D ec 2 00 5 3 D Spectroscopy of Herbig - Haro objects

ar X iv : a st ro - p h / 04 11 29 9 v 1 1 1 N ov 2 00 4 Energy Emission by Quantum Systems in an Expanding FRW Metric

Bound quantum mechanical systems not expanding with the comoving frame of an expanding, flat FRW metric are found to release energy at a rate linearly proportional to the local Hubble constant (H o) and the systems' binding energy (E b); i.e., ˙ E = H o E b. Three exemplary quantum systems are examined. For systems with early cosmological condensation times — notably hadrons — time-integrated e...