output
19922026
Showing 1999 · astro-phShow all

36 papers · 2 filters

astro-ph1999★ 1 cited

Hydrodynamics and Radiation from a Relativistic Expanding Jet with Applications to GRB Afterglow

Jonathan Granot, Mark Miller, Tsvi Piran +1

We describe fully relativistic three dimensional calculations of the slowing down and spreading of a relativistic jet by an external medium like the ISM. We calculate the synchrotr…

astro-ph1999★ 49 cited

Bayesian `Hyper-Parameters' Approach to Joint Estimation: The Hubble Constant from CMB Measurements

O. Lahav, S. L. Bridle, M. P. Hobson +2

Recently several studies have jointly analysed data from different cosmological probes with the motivation of estimating cosmological parameters. Here we generalise this procedure…

astro-ph1999★ 168 cited

Non-linear Stochastic Galaxy Biasing in Cosmological Simulations

R. S. Somerville, G. Lemson, Y. Sigad +3

We study the biasing relation between dark-matter halos or galaxies and the underlying mass distribution, using cosmological -body simulations in which galaxies are modelled via…

astro-ph1999

Cosmic Flows 99: Conference Summary

Avishai Dekel

I address the following issues: All bulk velocity measurements (but one) are consistent with our standard gravitational instability theory. New accurate data and reconstruction met…

astro-ph1999★ 83 cited

Hubble Space Telescope Observations of the Oldest Star Clusters in the LMC

J. A. Johnson, M. Bolte, P. B. Stetson +2

We present V, V-I color-magnitude diagrams (CMDs) for three old star clusters in the Large Magellanic Cloud (LMC): NGC 1466, NGC 2257 and Hodge 11. Our data extend about 3 magnitud…

astro-ph1999★ 23 cited

Cluster versus POTENT Density and Velocity Fields: Cluster Biasing and Omega

E. Branchini, I. Zehavi, M. Plionis +1

The density and velocity fields as extracted from the Abell/ACO clusters are compared to the corresponding fields recovered by the POTENT method from the Mark~III peculiar velociti…