305,893 research outputs found
MSSM Dark Matter Without Prejudice
Recently we examined a large number of points in a 19-dimensional parameter
subspace of the CP-conserving MSSM with Minimal Flavor Violation. We determined
whether each of these points satisfied existing theoretical, experimental, and
observational constraints. Here we discuss the properties of the parameter
space points allowed by existing data that are relevant for dark matter
searches.Comment: 4 pages, 3 figs; talk given at SUSY0
Language, Subjectivity and the Agon: A Comparative Study of Nietzsche and Lyotard
Political Philosophy and Ethic
Goals of the ARISE Space VLBI Mission
Supermassive black holes, with masses of 10^6 to more than 10^9 solar masses,
are among the most spectacular objects in the Universe, and are laboratories
for physics in extreme conditions. The primary goal of ARISE (Advanced Radio
Interferometry between Space and Earth) is to use the technique of Space VLBI
to increase our understanding of black holes and their environments, by imaging
the havoc produced in the near vicinity of the black holes by their enormous
gravitational fields. The mission will be based on a 25-meter space-borne radio
telescope operating at frequencies between 8 and 86 GHz, roughly equivalent to
an orbiting element of the Very Long Baseline Array. In an elliptical orbit
with an apogee height of 40,000-100,000 km, ARISE will provide resolution of 15
microarcseconds or better, 5-10 times better than that achievable on the
ground. At frequencies of 43 and 86 GHz, the resolution of light weeks to light
months in distant quasars will complement the gamma-ray and X-ray observations
of high-energy photons, which come from the same regions near the massive black
holes. At 22 GHz, ARISE will image the water maser disks in active galaxies
more than 15 Mpc from Earth, probing accretion physics and giving accurate
measurements of black-hole masses. ARISE also will study gravitational lenses
at resolutions of tens of microarcseconds, yielding important information on
the dark-matter distribution and on the possible existence of compact objects
with masses of 10^3 to 10^6 solar masses.Comment: 6 pages, New Astronomy Reviews, Proceedings of 4th EVN/JIVE
Symposium, LaTeX, document class elsart.cls, bibliography style natbib.st
Age, growth and life history of Klamath River Basin steelhead trout (Onchorhynchus mykiss irideus) as determined from scale analysis
Adult steelhead (Oncorhynchus mykiss irideus) scales were analyzed from eight fall-run, two spring-run, and one winter-run stocks within the Klamath-Trinity River system, from 1981 through 1983, to provide basic information on age, growth, and life history. The higher degree of half-pounder occurrence of upper Klamath River steelhead stocks (86.7 to 100%) compared to Trinity River steelhead stocks (32.0 to 80.0%) was the major life history difference noted in scale analysis. Early life history was similar for all areas sampled with most juveniles (86.4%) remaining in freshwater during the first two years of life before migrating to sea. Repeat spawning ranged from 17.6 to 47.9% for fall-run, 40.0 to 63.6% for spring-run, and 31.1% for winter-run steelhead. Mean length of adults at first spawning was inversely related to percent half-pounder occurrence in each stock. Ages of returning spawners, back calculated lengths at various life stages, and growth information are presented. (PDF contains 22 pages
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