output
19922026
Showing 2000 · astro-phShow all

18 papers · 2 filters

astro-ph2000★ 18 cited

Inhomogeneous Big Bang Nucleosynthesis and the High Baryon Density Suggested by Boomerang and MAXIMA

Hannu Kurki-Suonio, Elina Sihvola

The recent Boomerang and MAXIMA data on the cosmic microwave background suggest a large value for the baryonic matter density of the universe, omega_b = 0.03. This density is large…

astro-ph2000★ 282 cited

The Turbulent Shock Origin of Proto--Stellar Cores

Paolo Padoan, Mika Juvela, Alyssa A. Goodman +1

The fragmentation of molecular clouds (MC) into protostellar cores is a central aspect of the process of star formation. Because of the turbulent nature of super-sonic motions in M…

astro-ph2000★ 36 cited

On the multi-periodicities in the X-ray dipper XB 1916-053

L. Homer, P. A. Charles, P. Hakala +4

Using the Rossi X-ray Timing Explorer and the Nordic Optical Telescope we have obtained the highest ever quality X-ray/white-light high-speed photometry of XB 1916-053. We refine t…

astro-ph2000

QCD phase transition and primordial density perturbations

J. Ignatius, Dominik J. Schwarz

We analyze the effect of primordial density perturbations on the cosmic QCD phase transition. According to our results hadron bubbles nucleate at the cold perturbations. We call th…

astro-ph2000★ 20 cited

Thermal Comptonization in GRS 1915+105

Osmi Vilhu, Juri Poutanen, Petter Nikula +1

The Rossi X-ray Timing Explorer data of GRS 1915+105 from several observing periods are modeled with a thermal Comptonization model. Best-fit models indicate that there is a strong…

astro-ph2000

A toroidal black hole for the AGN phenomenon

Fulvio Pompilio, S. M. Harun-or-Rashid, Matts Roos

A new approach to the study of the AGN phenomenon is proposed, in which the nucleus activity is related to the metric of the inner massive black hole. The possibility of a Toroidal…