1 code implementation • 17 Sep 2019 • Nikki Arendse, Radosław J. Wojtak, Adriano Agnello, Geoff C. -F. Chen, Christopher D. Fassnacht, Dominique Sluse, Stefan Hilbert, Martin Millon, Vivien Bonvin, Kenneth C. Wong, Frédéric Courbin, Sherry H. Suyu, Simon Birrer, Tommaso Treu, Leon V. E. Koopmans
Results from time-delay lenses are consistent with those from distance-ladder calibrations and point to a discrepancy between absolute distance scales measured from the CMB (assuming the standard cosmological model) and late-time observations.
Cosmology and Nongalactic Astrophysics
1 code implementation • 4 Jan 2018 • Xuheng Ding, Tommaso Treu, Anowar J. Shajib, Dandan Xu, Geoff C. -F. Chen, Anupreeta More, Giulia Despali, Matteo Frigo, Christopher D. Fassnacht, Daniel Gilman, Stefan Hilbert, Philip J. Marshall, Dominique Sluse, Simona Vegetti
The goal of the challenge is to infer $H_0$ for each rung, given the HST images, the time delay, and a stellar velocity dispersion of the deflector, for a fixed background cosmology.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
