66 citations · 334 across the 10 of their papers we have counts for
10 papers
LensWatch: I. Resolved HST Observations and Constraints on the Strongly-Lensed Type Ia Supernova 2022qmx ("SN Zwicky")
J. D. R. Pierel, N. Arendse, S. Ertl +39
Supernovae (SNe) that have been multiply-imaged by gravitational lensing are rare and powerful probes for cosmology. Each detection is an opportunity to develop the critical tools…
TDCOSMO X. Automated Modeling of 9 Strongly Lensed Quasars and Comparison Between Lens Modeling Software
S. Ertl, S. Schuldt, S. H. Suyu +5
To use strong gravitational lenses as an astrophysical or cosmological probe, models of their mass distributions are often needed. We present a new, time-efficient automation code…
HOLISMOKES -- X. Comparison between neural network and semi-automated traditional modeling of strong lenses
S. Schuldt, S. H. Suyu, R. Canameras +4
Modeling of strongly gravitationally lensed galaxies is often required in order to use them as astrophysical or cosmological probes. With current and upcoming wide-field imaging su…
STRIDES: Automated uniform models for 30 quadruply imaged quasars
T. Schmidt, T. Treu, S. Birrer +68
Gravitational time delays provide a powerful one step measurement of , independent of all other probes. One key ingredient in time delay cosmography are high accuracy lens mod…
Lobachevsky holography in conformal Chern-Simons gravity
Mario Bertin, Sabine Ertl, Hossein Ghorbani +3
We propose Lobachevsky boundary conditions that lead to asymptotically H^2xR solutions. As an example we check their consistency in conformal Chern-Simons gravity. The canonical ch…
Canonical bifurcation in higher derivative, higher spin, theories
S. Deser, S. Ertl, D. Grumiller
We present a non-perturbative canonical analysis of the D=3 quadratic-curvature, yet ghost-free, model to exemplify a novel, "constraint bifurcation", effect. Consequences include…
Conformal Chern-Simons holography - lock, stock and barrel
Hamid Afshar, Branislav Cvetković, Sabine Ertl +2
We discuss a fine-tuning of rather generic three dimensional higher-curvature gravity actions that leads to gauge symmetry enhancement at the linearized level via partial masslessn…
Holograms of Conformal Chern-Simons Gravity
H. Afshar, B. Cvetkovic, S. Ertl +2
We show that conformal Chern-Simons gravity in three dimensions has various holographic descriptions. They depend on the boundary conditions on the conformal equivalence class and…
All stationary axi-symmetric local solutions of topologically massive gravity
Sabine Ertl, Daniel Grumiller, Niklas Johansson
We classify all stationary axi-symmetric solutions of topologically massive gravity into Einstein, Schrödinger, warped and generic solutions. We construct explicitly all local solu…
Erratum to `Instability in cosmological topologically massive gravity at the chiral point', arXiv:0805.2610
Sabine Ertl, Daniel Grumiller, Niklas Johansson
We correct a sign in the first variation of the on-shell action of cosmological topologically massive gravity at the chiral point and present the three equations affected by that s…