activity
20072014
most citedReconstruction of dark energy and expansion dynamics using Gaussian processes

440 citations · 1.1k across the 13 of their papers we have counts for

collaborators

14 papers

astro-ph.CO2014★ 4 cited

The Value of from Gaussian Processes

Vinicius C. Busti, Chris Clarkson, Marina Seikel

A new non-parametric method based on Gaussian Processes was proposed recently to measure the Hubble constant . The freedom in this approach comes in the chosen covariance func…

astro-ph.CO2014★ 110 cited

Evidence for a Lower Value for from Cosmic Chronometers Data?

Vinicius C. Busti, Chris Clarkson, Marina Seikel

An intriguing discrepancy emerging in the concordance model of cosmology is the tension between the locally measured value of the Hubble rate, and the 'global' value inferred from…

astro-ph.CO2013★ 21 cited

Optimising Gaussian processes for reconstructing dark energy dynamics from supernovae

Marina Seikel, Chris Clarkson

Gaussian processes are a fully Bayesian smoothing technique that allows for the reconstruction of a function and its derivatives directly from observational data, without assuming…

astro-ph.CO2013★ 108 cited

Null tests of the cosmological constant using supernovae

Sahba Yahya, Marina Seikel, Chris Clarkson +2

The standard concordance model of the Universe is based on the cosmological constant as the driver of accelerating expansion. This concordance model is being subjected to a growing…

astro-ph.CO2012★ 98 cited

Constraints on anisotropic cosmic expansion from supernovae

Benedict Bahr-Kalus, Dominik J. Schwarz, Marina Seikel +1

We test the isotropy of the expansion of the Universe by estimating the hemispherical anisotropy of supernova type Ia (SN Ia) Hubble diagrams at low redshifts (z<0.2). We compare t…

astro-ph.CO2012★ 70 cited

We do not live in the R_h = c t universe

Maciej Bilicki, Marina Seikel

We analyse the possibility that our Universe could be described by the model recently proposed by Melia & Shevchuk (2012), where the Hubble scale R_h=c/H is at all times equal to t…