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Self-consistent Gravitational Lens Reconstruction [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We present a new method for directly determining accurate, self-consistent cluster lens mass and shear maps in the strong lensing regime from the magnification bias of background galaxies.
Dye, S., Taylor, A.
core +3 more sources
GRAVITATIONAL LENS MODELING WITH BASIS SETS [PDF]
The Astrophysical Journal, 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 of complexity, and bridges the gap between parametric ...
S. Birrer, A. Amara, A. Réfrégier
semanticscholar +5 more sources
The strong gravitational lens finding challenge [PDF]
Astronomy & Astrophysics, 2018 Large-scale imaging surveys will increase the number of galaxy-scale strong lensing candidates by maybe three orders of magnitudes beyond the number known today.
R. Metcalf +35 more
semanticscholar +9 more sources
A Systematic Review of Strong Gravitational Lens Modeling Software [PDF]
, 2013 Despite expanding research activity in gravitational lens modeling, there is no particular software which is considered a standard. Much of the gravitational lens modeling software is written by individual investigators for their own use.
Aazami +39 more
core +2 more sources
Gravitational Lens Time Delays Using Polarization Monitoring
Galaxies, 2017 Gravitational lens time delays provide a means of measuring the expansion of the Universe at high redshift (and therefore in the ‘Hubble flow’) that is independent of local calibrations.
Andrew Biggs, Ian Browne
doaj +2 more sources
A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging [PDF]
Monthly notices of the Royal Astronomical Society, 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 previous analysis of RXJ 1131−1231.
G. Chen +22 more
semanticscholar +1 more source
lenstronomy: Multi-purpose gravitational lens modelling software package [PDF]
Physics of the Dark Universe, 2018 We present Lenstronomy, a multi-purpose open-source gravitational lens modeling python package. Lenstronomy is able to reconstruct the lens mass and surface brightness distributions of strong lensing systems using forward modelling.
S. Birrer, A. Amara
semanticscholar +1 more source
Overconstrained gravitational lens models and the Hubble constant [PDF]
Monthly notices of the Royal Astronomical Society, 2019 It is well known that measurements of H0 from gravitational lens time delays scale as H0 ∝ 1 − κE, where κE is the mean convergence at the Einstein radius RE but that all available lens data other than the delays provide no direct constraints on κE ...
C. O. Astronomy +1 more
semanticscholar +1 more source
Gravitational Lensing of Supernova Neutrino Bursts
Universe, 2021 Supernova neutrino bursts have been observed from extragalactic distances. This note addresses the question of how gravitational lensing could distort the information in the burst.
John M. LoSecco
doaj +1 more source
Gaia GraL: Gaia DR2 gravitational lens systems [PDF]
Astronomy & Astrophysics, 2018 We report the spectroscopic confirmation and modeling of the quadruply imaged quasar GRAL 113100–441959, the first gravitational lens (GL) to be discovered from a machine learning technique that only relies on the relative positions and fluxes of the ...
O. Wertz +19 more
semanticscholar +1 more source