Now showing items 1-4 of 4
Type Ia supernovae tests of fractal bubble universe with no cosmic acceleration
(E-print astro-ph/0504192University of Canterbury. Physics and Astronomy, 2005)
The unexpected dimness of Type Ia supernovae at redshifts z ≲ 1 has over the past 7 years been seen as an indication that the expansion of the universe is accelerating. A new model cosmology, the “fractal bubble model”, ...
Supernova tests of the timescape cosmology
(University of Canterbury. Physics and Astronomy, 2011)
The timescape cosmology has been proposed as a viable alternative to homogeneous cosmologies with dark energy. It realises cosmic acceleration as an apparent effect that arises in calibrating average cosmological parameters ...
Viable inhomogeneous model universe without dark energy from primordial inflation
(E-print gr-qc/0503099University of Canterbury. Physics and Astronomy, 2005)
A new model of the observed universe, using solutions to the full Einstein equations, is developed from the hypothesis that our observable universe is an underdense bubble, with an internally inhomogeneous fractal bubble ...
Cosmic clocks, cosmic variance and cosmic averages
(University of Canterbury. Physics and Astronomy, 2007)
Cosmic acceleration is explained quantitatively, purely in general relativity with matter obeying the strong energy condition, as an apparent effect due to quasilocal gravitational energy differences that arise in the ...