91 citations · 139 across the 4 of their papers we have counts for
4 papers
A Detection of Dark Matter Halo Ellipticity using Galaxy Cluster Lensing in SDSS
Anna Kathinka Dalland Evans, Sarah Bridle
We measure the ellipticity of isolated clusters of galaxies in the Sloan Digital Sky Survey (SDSS) using gravitational lensing. We stack the clusters, rotating so that the major ax…
Geometrical Constraints on Dark Energy
A. K. D. Evans, I. K. Wehus, O. Gron +1
We explore the recently introduced statefinder parameters. After reviewing their basic properties, we calculate the statefinder parameters for a variety of cosmological models, and…
Five nights of intensive R- and V-band photometry of QSO 0957+561A,B
J. E. Ovaldsen, J. Teuber, R. Stabell +1
We present R- and V-band photometry of the gravitational lens system QSO 0957+561 from five nights (one in 2000 January and four in 2001 March, corresponding to the approximate tim…
'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar
Wesley N. Colley, Rudolph E. Schild, Cristina Abajas +20
An observing campaign with 10 participating observatories has undertaken to monitor the optical brightness of the Q0957 gravitationally lensed quasar for 10 consecutive nights in J…