The Hubble constant inferred from 18 time-delay lenses
Cosmology and Nongalactic Astrophysics
2010-10-05 v1
Abstract
We present a simultaneous analysis of 18 galaxy lenses with time delay measurements. For each lens we derive mass maps using pixelated simultaneous modeling with shared Hubble constant. We estimate the Hubble constant to be 66_{-4}^{+6} km/s/Mpc (for a flat Universe with \Omega_m=0.3, \Omega_\Lambda=0.7). We have also selected a subsample of five relatively isolated early type galaxies and by simultaneous modeling with an additional constraint on isothermality of their mass profiles we get H_0=76 +/-3 km/s/Mpc.
Cite
@article{arxiv.1002.2570,
title = {The Hubble constant inferred from 18 time-delay lenses},
author = {Danuta Paraficz and Jens Hjorth},
journal= {arXiv preprint arXiv:1002.2570},
year = {2010}
}
Comments
11 page, 4 figures, Accepted for publication in ApJ