Now showing items 71-80 of 156
Cosmic ray antimatter from supersymmetric dark matter
(Elsevier, 1986-01-20)
In this paper we study the antiproton, positron and gamma-ray fluxes resulting from the annihilation of supersymmetric dark matter in our galactic halo. We show that the requirement of closure imposed by inflationary ...
String fluid dynamics in general relativity
(IOP Publishing Ltd, 1997-08-01)
The general, energy - momentum tensor for a dynamical, string fluid in general relativity is presented using the Ray - Hilbert variational principle. The calculations are given for both the standard and the extended ...
CAMAC modules for recording arbitrarily long time series
(Elsevier, 1992-08-15)
Two CAMAC modules have been designed to record the time of arrival of up to 32768 sequential events. the system consists of a clock module to generate a gated clock pulse train and a memory module to record event arrival ...
Cosmological Constraints from Observed Cluster X-Ray Morphologies
(Univ Chicago Press, 1995-07-01)
We use a representative sample of 65 galaxy dusters observed with the Einstein IPC to constrain the range of cluster X-ray morphologies. We develop and apply quantitative and reproducible measures of cluster X-ray morphologies ...
Inclusive charged particle production near the kinematic limit in e+e- annihilation at 29 GeV
(Elsevier, 1985-12-05)
Inclusive production of charged particles has been studied in e+e- annihilation at GeV using the high resolution spectrometer at PEP. Differential cross sections are presented in the range of scaled energy 0.1zzz)2 behavior ...
Coulomb displacement energies and decay widths of isobaric analog states from Sm(3He, t) at [theta] = 0[deg]
(Elsevier, 1983-06-27)
The 144,147,148,149,150,154Sm(3He, t)144,147,148,149,150,152,154Eu reactions leading to ground-state isobaric analog states (IAS) have been studied at [theta] = 0[deg] and E(3He) = 45.9 MeV. The Coulomb displacement energies ...
A new limit on scalar and vector contributions to gravity
(Elsevier, 1989-03-16)
Macroscopic effects of theories of quantum gravity containing scalar, vector, and tensor component sin proportions CS:CV:CT are considered. Assuming zero mass fields, the classical tests of general relativity are found to ...
Constraints on Omega(0) and cluster evolution using the ROSAT logN-logS relation
(Blackwell Science Ltd, 1998-04-21)
We examine the Likelihoods of different cosmological models and cluster evolutionary histories by comparing semi-analytical predictions of X-ray cluster number counts with observational data from the ROSAT satellite. We ...
Protostellar Disk Formation and Early Evolution
(Kluwer Academic Publishers; Springer Science+Business Media, 2000-03)
This contribution describes the formation of circumstellar disks and their earliest evolutionary phases when self-gravity in the disk plays a crucial role in eliciting the transport of mass and angular momentum. We first ...
A Simulation of the Intracluster Medium With Feedback from Cluster Galaxies
(Univ Chicago Press, 1994-12-20)
We detail method and report first results from a three-dimensional hydrodynamical and N-body simulation of the formation and evolution of a Coma-sized cluster of galaxies, with the intent of studying the history of the ...