19,818 research outputs found
Curvature pressure in a cosmology with a tired-light redshift
A hypothesis of curvature pressure is used to derive a static and stable
cosmology with a tired-light redshift. The idea is that the high energy
particles in the inter-galactic medium do not travel along geodesics because of
the strong electrostatic forces. The result is a reaction back on the medium
that is seen as an additional pressure. Combined with the explanation of the
Hubble redshift as a gravitational interaction results in a static and stable
cosmology. The predicted Hubble constant is 60.2 km/s/Mpc, the predicted
background microwave temperature is 3 degrees and quasar luminosity functions
and angular size distributions are shown to be consistent with the model. Since
most observations that imply dark matter rely on redshift data it is argued
that there is no dark matter. Observations of quasar absorption lines,
supernovae light curves and the Butcher-Oemler effect are discussed. The
curvature pressure is important for stellar structure and may explain the solar
neutrino deficiency.Comment: 27 pages, no figures. This is a rewritten version of astro-ph/9803009
Accepted by Australian J. Phys. Changes to title, typo's and updated
reference
Laboratory plasma wave experiments
Stable Maxwellian plasma wave modes, theoretical and experimental treatmen
Theoretical and experimental studies of the nature and characteristics of space-related plasma resonance phenomena Final report, 1 Jul. 1969 - 30 Jun. 1970
Space plasma experiments involving Alouette resonances and diagnostic techniques applied to electron density and temperature and local magnetic field strength measuremen
Investigation of a coilable lattice column
Structural stability of lattice column of longerons and helical brace
Theoretical and experimental studies of space-related plasma wave propagation and resonance phenomena
Active research is reported in the following areas: (1) whistler propagation; (2) whistler triggered VLF emissions; (3) Alfven wave excitation; (4) helical electron beams for whistler generation; and (5) ULF excitation by metallic electric or magnetic dipole antennas
Variational description of the positive column with two-stem ionization
The ionization balance in diffusion dominated discharges which depends on both one and two step ionization processes is considered. The Spenke diffusion equation (D sq delta n + neutrino n + sq kn =0) describing such conditions is solved by the Rayleigh-Ritz variational method. Simple analytic approximations to the density profile, and the similarity relation between neutrino,k,D and the discharge dimensions, are derived for planar and cylindrical geometry, and compared with exact computations for certain limiting cases
Theoretical and experimental studies of the nature and characteristics of space related plasma resonance phenomena
Theoretical and experimental studies of space related plasma wave propagation and resonance phenomena cover whistler emissions and instabilities, low frequency plasma instabilities, nonlinear wave interactions and scattering from plasma column, and the resonance come of dipole antenna immersed in cold overdense magnetoplasma
An evaluation of boron-polymer film layer composites for high-performance structures
Fabricability, mechanical properties, and structural efficiency potentials of boron-polymer film layer composite
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