341 citations · 931 across the 22 of their papers we have counts for
21 papers
Calculation of distances in cosmological models with small-scale inhomogeneities and their use in observational cosmology: a review
Phillip Helbig
The Universe is not completely homogeneous. Even if it is sufficiently so on large scales, it is very inhomogeneous at small scales, and this has an effect on light propagation, so…
The - relation for Type Ia supernovae: safety in numbers or safely without worry?
Phillip Helbig
The - relation for Type Ia supernovae is compatible with the cosmological concordance model if one assumes that the Universe is homogeneous, at least with respect to light pr…
The - relation for type Ia supernovae, locally inhomogeneous cosmological models, and the nature of dark matter
Phillip Helbig
The - relation for type Ia supernovae is one of the key pieces of evidence supporting the cosmological `concordance model' with and . Howev…
Is there a flatness problem in classical cosmology?
Phillip Helbig
I briefly review the flatness problem within the context of classical cosmology and examine some of the debate in the literature with regard to its definition and even the question…
The Cosmic Lens All-Sky Survey parent population - I. Sample selection and number counts
J. P. McKean, I. W. A. Browne, N. J. Jackson +2
We present the selection of the Jodrell Bank Flat-spectrum (JBF) radio source sample, which is designed to reduce the uncertainties in the Cosmic Lens All-Sky Survey (CLASS) gravit…
Can Microlensing Explain the Long-Term Optical Variability of Quasars?
Erik Zackrisson, Nils Bergvall, Thomas Marquart +1
Although controversial, the scenario of microlensing as the dominant mechanism for the long-term optical variability of quasars does provide a natural explanation for both the stat…