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Now showing items 31-40 of 40

#### On-brane data for braneworld stars

(University of Canterbury. Physics and Astronomy, 2003)

Stellar structure in braneworlds is markedly different from that in ordinary general relativity. As
an indispensable first step towards a more general analysis, we completely solve the “on brane”
4-dimensional Gauss and ...

#### Photometry and spectroscopy of the contact binary GSC 04778-00152

(University of Canterbury. University Centre for Teaching and LearningUniversity of Canterbury. AVC Research Office, 2008)

Photometric and spectroscopic data of the southern contact binary GSC 04778–00152 are presented. Six new times of minimum are listed. For modelling purposes,
we provide UBVRI phase diagrams of the contact binary with the ...

#### The rise and fall of V4334 Sagittarii (Sakurai's Object)

(University of Canterbury. University Centre for Teaching and LearningUniversity of Canterbury. AVC Research Office, 2000)

CCD UBV Ri photometry of the Ðnal helium Ñash object V4334 Sgr (SakuraiÏs object) carried out
during 1997È1999 is presented, and the light curve from its prediscovery rise to the dust obscuration
phase is constructed. ...

#### Average observational quantities in the timescape cosmology

(University of Canterbury. Physics and Astronomy, 2009)

We examine the properties of a recently proposed observationally viable alternative to homogeneous
cosmology with smooth dark energy, the timescape cosmology. In the timescape model
cosmic acceleration is realized as an ...

#### 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 ...

#### Gravitational energy and cosmic acceleration

(University of Canterbury. Physics and Astronomy, 2008)

Cosmic acceleration is explained quantitatively, as an apparent effect due to gravitational energy differences that arise in the decoupling of bound systems from the global expansion of the universe. "Dark energy" is a ...

#### 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 ...

#### CCD time-series photometry of BQ Ind

(University of Canterbury. University Centre for Teaching and LearningUniversity of Canterbury. AVC Research Office, 2002)

We present CCD time-series photometry of BQ Ind, which is either a Population I
large-amplitude δ Scuti star or an SX Phoenicis star.

#### Properties of cosmologies with dynamical pseudo Nambu-Goldstone bosons

(University of Canterbury. Physics and Astronomy, 2001)

We study observational constraints on cosmological models with a quintessence field in the form of
a dynamical pseudo Nambu–Goldstone boson. After reviewing the properties of the solutions, from
a dynamical systems phase ...

#### Stable gravastars - an alternative to black holes?

(University of Canterbury. Physics and Astronomy, 2004)

The “gravastar” picture developed by Mazur and Mottola is one of a very
small number of serious challenges to our usual conception of a “black hole”. In the
gravastar picture there is effectively a phase transition at
/ ...