44 citations · 134 across the 8 of their papers we have counts for
8 papers
Exploiting the diversity of modeling methods to probe systematic biases in strong lensing analyses
A. Galan, G. Vernardos, Q. Minor +3
Challenges inherent to high-resolution and high signal-to-noise data as well as model degeneracies can cause systematic biases in analyses of strong lens systems. In the past decad…
On the ellipticity parameterization for an NFW profile: an overlooked angular structure in strong lens modeling
Matthew R. Gomer, Dominique Sluse, Lyne Van de Vyvere +3
Galaxy-scale gravitational lenses are often modeled with two-component mass profiles where one component represents the stellar mass and the second is an NFW profile representing t…
Accelerating galaxy dynamical modeling using a neural network for joint lensing and kinematics analyses
Matthew R. Gomer, Sebastian Ertl, Luca Biggio +6
Strong gravitational lensing is a powerful tool to provide constraints on galaxy mass distributions and cosmological parameters, such as the Hubble constant, . Nevertheless, i…
TDCOSMO VIII: A key test of systematics in the hierarchical method of time-delay cosmography
Matthew R. Gomer, Dominique Sluse, Lyne Van de Vyvere +2
The largest source of systematic errors in the time-delay cosmography method likely arises from the lens model mass distribution, where an inaccurate choice of model could in princ…
Consequences of the lack of azimuthal freedom in the modeling of lensing galaxies
Lyne Van de Vyvere, Dominique Sluse, Matthew R. Gomer +1
Massive elliptical galaxies can display structures that deviate from a pure elliptical shape, such as a twist of the principal axis or variations in the axis ratio with galactocent…
TDCOSMO. VII. Boxyness/discyness in lensing galaxies : Detectability and impact on
Lyne Van de Vyvere, Matthew R. Gomer, Dominique Sluse +4
In the context of gravitational lensing, the density profile of lensing galaxies is often considered to be perfectly elliptical. Potential angular structures are generally ignored,…
Galaxy-lens determination of : the effect of the ellipse+shear modeling assumption
Matthew R. Gomer, Liliya L. R. Williams
Galaxy lenses are frequently modeled as an elliptical mass distribution with external shear and isothermal spheres to account for secondary and line-of-sight galaxies. There is sta…
The impact of CDM substructure and baryon-dark matter transition on the image positions of quad galaxy lenses
Matthew R. Gomer, Liliya L. R. Williams
The positions of multiple images in galaxy lenses are related to the galaxy mass distribution. Smooth elliptical mass profiles were previously shown to be inadequate in reproducing…