gravitational lenses, a claim confirmed in 1979 by observation of the Twin QSO SBS 0957+561. Unlike an optical lens, a point-like gravitational lens produces...

gravitational lens or solar gravity lens (SGL) is a theoretical method of using the Sun as a large lens with a physical effect called gravitational lensing...

images associated with strong gravitational lensing. Most lines of sight in the universe are thoroughly in the weak lensing regime, in which the deflection...

from the observer to the lens. For extragalactic lenses, these must be angular diameter distances. In strong gravitational lensing, this equation can have...

Gravitational microlensing is an astronomical phenomenon caused by the gravitational lens effect. It can be used to detect objects that range from the...

Strong gravitational lensing is a gravitational lensing effect that is strong enough to produce multiple images, arcs, or Einstein rings. Generally, for...

to the Earth. Due to gravitational lensing, the light is diverted, making it seem to come from different places. If source, lens, and observer are all...

and the propagation of light, and include gravitational time dilation, gravitational lensing, the gravitational redshift of light, the Shapiro time delay...

effects occur in the context of formation and evolution of galaxies, gravitational lensing, the observable universe's current structure, mass position in galactic...

physics. Gravitation, also known as gravitational attraction, is the mutual attraction between all masses in the universe. Gravity is the gravitational attraction...

observation of effects caused by a strong gravitational field in their vicinity. One such effect is gravitational lensing: The deformation of spacetime around...

effects of gravity, such as gravitational waves, gravitational lensing and an effect of gravity on time known as gravitational time dilation. Many of these...

1919. It is a quasar that appears as two images, a result from gravitational lensing caused by the galaxy YGKOW G1 that is located directly between Earth...

of the perihelion of Mercury, the bending of light in gravitational fields, and the gravitational redshift. The precession of Mercury was already known;...

The gravitational constant (also known as the universal gravitational constant, the Newtonian constant of gravitation, or the Cavendish gravitational constant)...

see) appear in the middle of the foreground galaxy due to strong gravitational lensing. This system was discovered by John Huchra and coworkers in 1985...

The Optical Gravitational Lensing Experiment (OGLE) is a Polish astronomical project based at the University of Warsaw that runs a long-term variability...

Keck Telescope revealed that this system is gravitationally lensed. A study of the gravitational lensing of this system suggests that the light emitted...

A gravitational singularity, spacetime singularity or simply singularity is a condition in which gravity is predicted to be so intense that spacetime...

to discover the existence of a gravitational anomaly, which he termed dunkle Materie 'dark matter'. The gravitational anomaly surfaced due to the excessive...

a characteristic angle for gravitational lensing in general, as typical distances between images in gravitational lensing are of the order of the Einstein...

also used for their strong gravitational potential as gravitational lenses to boost the reach of telescopes. The gravitational distortion of space-time...

particular, he made contributions to cosmology, the theory of gravitational lenses and gravitational waves. His principal concern was to clarify general relativity's...

the gravitational potential of a straight string vanishes: there is no gravitational force on static surrounding matter. The only gravitational effect...

principle of equivalence of gravitational and inertial mass and uses it to predict gravitational lensing and gravitational redshift, historically known...

5 kpc rising to 360 km s−1 at 20 kpc distance. The BCG also acts as a gravitational lens, bending the light of a more distant background galaxy (at redshift...

Outgoing Cyclopean Astronomical Lens) is a proposed space telescope that would use the Sun as a gravity lens. The gravitational lens effect was first derived...

as a gravitational lens would produce images with higher resolution when imaging potentially habitable exoplanets. Gravitational lens Gravitational microlensing...

Eyepiece F-number Gravitational lens Lens (anatomy) List of lens designs Numerical aperture Optical coatings Optical lens design Photochromic lens Prism (optics)...

Xallarap is a variation in a gravitational lensing observation caused by the orbital motion of the source. A more traditional and similar effect, parallax...