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A hierarchical Bayesian framework for cosmology using Type 1 AGN variability
Júlia Laguna-Miralles, Vasily Belokurov, Miles Cranmer
Independent luminosity-distance probes beyond the Type Ia supernova range are needed to test cosmic expansion at high redshift. Type 1 AGN are abundant at \(z>2\), but their use fo…
The dark matter halo concentration and stellar initial mass function of a CASSOWARY group
A. J. Deason, M. W. Auger, V. Belokurov +1
We exploit the group environment of the CAmbridge Sloan Survey Of Wide ARcs in the skY (CASSOWARY) z=0.3 lens J2158+0257 to measure the group dynamical mass as a complement to the…
Triaxial Cosmological Haloes and the Disc of Satellites
A. Bowden, N. W. Evans, V. Belokurov
We construct simple triaxial generalisations of Navarro-Frenk-White haloes. The models have elementary gravitational potentials, together with a density that is cusped like 1/r at…
Elliptical galaxy masses out to five effective radii: the realm of dark matter
A. J. Deason, V. Belokurov, N. W. Evans +1
We estimate the masses of elliptical galaxies out to five effective radii using planetary nebulae and globular clusters as tracers. A sample of 15 elliptical galaxies with a broad…