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13 papers · 2 filters
Dark Matter, Discreteness and Collision Error in Cosmological N-Body Simulations
Randall J. Splinter, Adrian L. Melott, Sergei F. Shandarin
We report on a series of tests of agreement between three types of N-body simulations: PM, PM, and Tree codes. We find good agreement in both the individual and the statistical…
Status of Radio Ice Cherenkov Experiment (RICE)
RICE Collaboration, C. Allen, A. Bean +11
RICE is designed to detect ultrahigh energy (>100 TeV) neutrinos from astrophysical sources. It will consist of an array of compact radio (100 to 1000 MHz) receivers buried in ice…
Some Revised Observational Constraints on the Formation and Evolution of the Galactic Disk
Bruce A. Twarog, Keith M. Ashman, Barbara J. Anthony-Twarog
A set of 76 open clusters with abundances based upon DDO photometry and/or moderate dispersion spectroscopy has been transformed to a common [Fe/H] scale and used to study the loca…
The Cosmological Mass Distribution Function in the Zel'dovich Approximation
Jounghun Lee, Sergei F. Shandarin
An analytic approximation to the mass function for gravitationally bound objects is presented. We base on the Zel'dovich approximation to extend the Press-Schechter formalism to a…
The Corkscrew Effect
John P. Ralston, Pankaj Jain, Borge Nodland
We discuss a new mechanism which could cause a rotation of polarization of electromagnetic waves due to magnetic fields on cosmological scales. The effect is due to the geometrical…
An Update on Cosmological Anisotropy in Electromagnetic Propagation
John P. Ralston, Borge Nodland
We review evidence for a new phenomenon in the propagation of radio waves across the Universe, an anisotropic rotation of the plane of polarization not accounted for by conventiona…