Results 11 to 20 of about 70,851 (245)
The inner mass power spectrum of galaxies using strong gravitational lensing: beyond linear approximation [PDF]
, 2017 In the last decade the detection of individual massive dark matter sub-halos has been possible using potential correction formalism in strong gravitational lens imaging.
Chatterjee, Saikat +1 more
core +5 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 lens. This has been achieved in the past for several remarkable gravitational lens systems.
Surdej, Jean +10 more
openaire +5 more sources
Fixed Points Features in N-Point Gravitational Lenses
East European Journal of Physics, 2019 A set of fixed points in N-point gravitational lenses is studied in the paper. We use complex form of lens mapping to study fixed points. There are some merits of using a complex form over coordinate. In coordinate form gravitational lens is described by
Volodymyr Shablenko
doaj +1 more source
Global properties of gravitational lens maps in a Lorentzian manifold setting [PDF]
, 2000 In a general-relativistic spacetime (Lorentzian manifold), gravitational lensing can be characterized by a lens map, in analogy to the lens map of the quasi-Newtonian approximation formalism.
Perlick, Volker
core +3 more sources
SOME COROLLARY FACTS OF THE N-POINT GRAVITATIONAL LENS EQUATION IN A COMPLEX FORM
Odessa Astronomical Publications, 2019 In the theory of the N-point gravita- tional lens equation, two groups of problems can be dis- tinguished. These are the so-called primal and inverse problems.
O. A. Osmayev +3 more
doaj +1 more source
The final candidate from the JVAS/CLASS search for 6 arcsec to 15 arcsec image separation lensing [PDF]
, 2010 A search for 6 arcsec to 15 arcsec image separation lensing in the Jodrell Bank-Very Large Array Astrometric Survey (JVAS) and the Cosmic Lens All-Sky Survey (CLASS) by Phillips et al.
Barvainis +45 more
core +2 more sources
GRAVITATIONAL LENS MODELING WITH BASIS SETS [PDF]
The Astrophysical Journal, 2015 14 pages, 10 figures, accepted for publication in ...
Simon Birrer +2 more
openaire +3 more sources
Odessa Astronomical Publications, 2017 In this paper, we study the correlation between the number of solutions of a system of lens equations and the number of source images that a gravitational lens has. We defined the concept of an image in a gravitational lens.
A. T. Kotvytskiy +2 more
doaj +1 more source
Studies of relativistic effects with radioastron space mission [PDF]
Serbian Astronomical Journal, 2007 In the review we discuss possible studies of GR phenomena such as gravitational microlensing and shadow analysis with the forthcoming RadioAstron space mission.
Zakharov A.F.
doaj +1 more source
Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions
Nature Communications, 2019 Quantum metrology allows surpassing the standard quantum limit, but methods relying on squeezing require to know the orientation of the squeezed quadrature with respect to the signal.
Fabian Wolf +8 more
doaj +1 more source