Results 1 to 10 of about 144,646 (334)
The Gravitational Lens CFRS03.1077 [PDF]
The Astrophysical Journal, 2002 An exquisite gravitational arc with a radius of 2.1" has been discovered around the z = 0.938 field elliptical galaxy CFRS03.1077 during HST observations of Canada-France Redshift Survey (CFRS) fields.
A. Matzkin +9 more
core +9 more sources
The Optimal Gravitational Lens Telescope [PDF]
The Astronomical Journal, 2010 Given an observed gravitational lens mirage produced by a foreground deflector (cf. galaxy, quasar, cluster,...), it is possible via numerical lens inversion to retrieve the real source image, taking full advantage of the magnifying power of the cosmic ...
Bolton +15 more
core +10 more sources
A comparison of approximate gravitational lens equations and a proposal for an improved new one [PDF]
Phys.Rev.D78:103005,2008, 2008 Keeping the exact general relativistic treatment of light bending as a reference, we compare the accuracy of commonly used approximate lens equations. We conclude that the best approximate lens equation is the Ohanian lens equation, for which we present a new expression in terms of distances between observer, lens and source planes.
A. O. Petters +6 more
arxiv +3 more sources
Fixed points of mapping of N-point gravitational lenses [PDF]
Odessa Astronomical Publications, 2018 In this paper, we study fixed points of N-point gravitational lenses. We use complex form of lens mapping to study fixed points. Complex form has an advantage over coordinate one because we can describe N-point gravitational lens by system of two equation ...
A. T. Kotvytskiy +2 more
doaj +2 more sources
A Systematic Review of Strong Gravitational Lens Modeling Software [PDF]
, 2012 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. Some gravitational lens modeling software is freely available for download but is widely variable with regard to ...
Aazami +39 more
arxiv +3 more sources
The 2dF gravitational lens survey [PDF]
Publications of the Astronomical Society of Australia, 2001 The 2 degree Field (2dF) galaxy redshift survey will involve obtaining approximately 2.5 x 10^5 spectra of objects previously identified as galaxy candidates on morphological grounds.
Cole +5 more
core +9 more sources
The cosmological lens equation and the equivalent single-plane gravitational lens [PDF]
, 1997 The gravitational lens equation resulting from a single (non-linear) mass concentration (the main lens) plus inhomogeneities of the large-scale structure is shown to be strictly equivalent to the single-plane gravitational lens equation without the cosmological perturbations.
Schneider, Peter
arxiv +5 more sources
Scattering of Gravitational Waves by the Weak Gravitational Fields of Lens Objects [PDF]
, 2005 We consider the scattering of the gravitational waves by the weak gravitational fields of lens objects. We obtain the scattered gravitational waveform by treating the gravitational potential of the lens to first order, i.e. using the Born approximation.
Bartelmann +13 more
arxiv +3 more sources
Gravitational lens candidates in the E-CDFS [PDF]
Astrophys.J.734:69,2011, 2011 We report ten lens candidates in the E-CDFS from the GEMS survey. Nine of the systems are new detections and only one of the candidates is a known lens system. For the most promising five systems including the known lens system, we present results from preliminary lens mass modelling, which tests if the candidates are plausible lens systems ...
Surhud More +7 more
arxiv +10 more sources
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 +4 more sources