DSpace Collection:http://hdl.handle.net/2440/123542014-10-31T19:17:49Z2014-10-31T19:17:49ZSpheroidal and elliptical galaxy radial velocity dispersion determined from Cosmological General RelativityHartnett, J.http://hdl.handle.net/2440/868582014-10-31T00:21:18Z2007-12-31T13:30:00ZTitle: Spheroidal and elliptical galaxy radial velocity dispersion determined from Cosmological General Relativity
Author: Hartnett, J.
Abstract: Radial velocity dispersion in spheroidal and elliptical galaxies, as a function of radial distance from the center of the galaxy, has been derived from Cosmological Special Relativity. For velocity dispersions in the outer regions of spherical galaxies, the dynamical mass calculated for a galaxy using Carmelian theory may be 10 to 100 times less than that calculated from standard Newtonian physics. This means there is no need to include halo dark matter. The velocity dispersion is found to be approximately constant across the galaxy after falling from an initial high value at the center.2007-12-31T13:30:00ZExtending the redshift-distance relation in Cosmological General Relativity to higher redshiftsHartnett, J.http://hdl.handle.net/2440/868572014-10-31T00:20:38Z2007-12-31T13:30:00ZTitle: Extending the redshift-distance relation in Cosmological General Relativity to higher redshifts
Author: Hartnett, J.
Abstract: The redshift-distance modulus relation, the Hubble Diagram, derived from Cosmological General Relativity has been extended to arbitrarily large redshifts. Numerical methods were employed and a density function was found that results in a valid solution of the field equations at all redshifts. The extension has been compared to 302 type Ia supernova data as well as to 69 Gamma-ray burst data. The latter however do not truly represent a ‘standard candle’ as the derived distance moduli are not independent of the cosmology used. Nevertheless the analysis shows a good fit can be achieved without the need to assume the existence of dark matter. The Carmelian theory is also shown to describe a universe that is always spatially flat. This results from the underlying assumption of the energy density of a cosmological constant ΩΛ=1, the result of vacuum energy. The curvature of the universe is described by a spacevelocity metric where the energy content of the curvature at any epoch is Ω K =ΩΛ−Ω=1−Ω, where Ω is the matter density of the universe. Hence the total density is always Ω K +Ω=1.2007-12-31T13:30:00ZCryogenic-sapphire-oscillator-based reference signal at 1 GHz with 10⁻¹⁵ level instabilityWatabe, K.I.Yanagimachi, S.Takamizawa, A.Ikegami, T.Ohshima, S.I.Santarelli, G.Locke, C.Hartnett, J.http://hdl.handle.net/2440/868562014-10-31T00:19:54Z2007-12-31T13:30:00ZTitle: Cryogenic-sapphire-oscillator-based reference signal at 1 GHz with 10⁻¹⁵ level instability
Author: Watabe, K.I.; Yanagimachi, S.; Takamizawa, A.; Ikegami, T.; Ohshima, S.I.; Santarelli, G.; Locke, C.; Hartnett, J.
Abstract: We describe a 1 GHz reference signal with 10-15 level fractional frequency stability for averaging times longer than 1 s, synthesized from a 10.8 GHz oscillation frequency of a cryogenic-sapphire-resonator-based ultra-stable oscillator and phase locked to a hydrogen maser with a time constant of about 1000 s. The degradation of the short term stability of the reference signal by phase locking to the hydrogen maser was evaluated. We also report on the implementation of the 1 GHz signal down converted to 5 MHz as a reference oscillator for a cesium atomic fountain frequency standard.2007-12-31T13:30:00ZModified permittivity observed in bulk gallium arsenide and gallium phosphide samples at 50K using the whispering gallery mode methodHartnett, J.Mouneyrac, D.Le Floch, J.M.Krupka, J.Tobar, M.Cros, D.http://hdl.handle.net/2440/868552014-10-31T00:19:11Z2007-12-31T13:30:00ZTitle: Modified permittivity observed in bulk gallium arsenide and gallium phosphide samples at 50K using the whispering gallery mode method
Author: Hartnett, J.; Mouneyrac, D.; Le Floch, J.M.; Krupka, J.; Tobar, M.; Cros, D.
Abstract: Abstract not available2007-12-31T13:30:00Z