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H0LiCOW – XIII. A 2.4 per cent measurement of H0 from lensed quasars: 5.3σ tension between early- and late-Universe probes
- Kenneth C. Wong, S. Suyu, G. Meylan
- PhysicsMonthly Notices of the Royal Astronomical Society
- 10 July 2019
We present a measurement of the Hubble constant (H0) and other cosmological parameters from a joint analysis of six gravitationally lensed quasars with measured time delays. All lenses except the…
TDCOSMO IV: Hierarchical time-delay cosmography -- joint inference of the Hubble constant and galaxy density profiles
- S. Birrer, A. Shajib, L. D. Vyvere
- Physics
- 6 July 2020
The H0LiCOW collaboration inferred via gravitational lensing time delays a Hubble constant $H_0=73.3^{+1.7}_{-1.8}$ km s$^{-1}{\rm Mpc}^{-1}$, describing deflector mass density profiles by either a…
H0LiCOW – IX. Cosmographic analysis of the doubly imaged quasar SDSS 1206+4332 and a new measurement of the Hubble constant
- S. Birrer, T. Treu, G. Meylan
- PhysicsMonthly Notices of the Royal Astronomical Society
- 5 September 2018
We present a blind time-delay strong lensing (TDSL) cosmographic analysis of the doubly imaged quasar SDSS 1206+4332 . We combine the relative time delay between the quasar images, Hubble Space…
A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging
- G. Chen, C. Fassnacht, T. Treu
- PhysicsMonthly Notices of the Royal Astronomical Society
- 5 July 2019
We present the measurement of the Hubble constant, H0, with three strong gravitational lens systems. We describe a blind analysis of both PG 1115+080 and HE 0435−1223 as well as an extension of our…
Quantitative Evaluation of Gender Bias in Astronomical Publications from Citation Counts
- N. Caplar, S. Tacchella, S. Birrer
- PsychologyArXiv
- 27 October 2016
TLDR
Lensing substructure quantification in RXJ1131-1231: a 2 keV lower bound on dark matter thermal relic mass
- S. Birrer, A. Amara, A. Réfrégier
- Physics
- 31 January 2017
We study the substructure content of the strong gravitational lens RXJ1131-1231 through a forward modelling approach that relies on generating an extensive suite of realistic simulations. We use a…
Cosmology Intertwined II: The Hubble Constant Tension
- E. D. Valentino, L. Anchordoqui, Weiqiang Yang
- Physics
- 25 August 2020
STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408−5354
- A. Shajib, S. Birrer, Y. Zhang
- PhysicsMonthly Notices of the Royal Astronomical Society
- 15 October 2019
We present a blind time-delay cosmographic analysis for the lens system DES J0408−5354. This system is extraordinary for the presence of two sets of multiple images at different redshifts, which…
GRAVITATIONAL LENS MODELING WITH BASIS SETS
- S. Birrer, A. Amara, A. Réfrégier
- Physics
- 28 April 2015
We present a strong lensing modeling technique based on versatile basis sets for the lens and source planes. Our method uses high performance Monte Carlo algorithms, allows for an adaptive build up…
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