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### Gravitational Lensing

Gravitational lensing has developed into one of the most powerful tools for
the analysis of the dark universe. This review summarises the theory of
gravitational lensing, its main current applications and representative results
achieved so far. It has two parts. In the first, starting from the equation of
geodesic deviation, the equations of thin and extended gravitational lensing
are derived. In the second, gravitational lensing by stars and planets,
galaxies, galaxy clusters and large-scale structures is discussed and
summarised. Oct 19, 2010 ... It has two parts. In the first, starting from the equation of geodesic deviation, the equations of thin and extended gravitational lensing are ...
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### North American Nanohertz Observatory For Gravitational Waves

NANOGrav is the North American Nanohertz Observatory for Gravitational Waves. We specialize in searching for low frequency gravitational waves using Pulsar ...
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### Gravitational On Steam

Gravitational is a VR experience that takes place in an upward future, where gravitational technology is being discovered. Experience Sebastian, a scientist in the apex of collapse inside Gravicorp’s facilities, overcoming not only challenges on your way but also your traumas. Nov 26, 2021 ... Gravitational is a VR experience that takes place in an upward future, where gravitational technology is being discovered.
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### Gravitational Lensing

May 30, 2019 ... A gravitational lens can occur when a huge amount of matter, like a cluster of galaxies, creates a gravitational field that distorts and ...
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### GW170817: Observation Of Gravitational Waves From A Binary ...

For the first time, researchers have detected both light and gravitational waves from the same event in space. Oct 16, 2017 ... GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral. B. P. Abbott et al. (LIGO Scientific Collaboration and Virgo ...
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### Astronomers Find A New Way To Detect Gravitational Waves | Science ...

Gamma rays from distant pulsars could help find merging supermassive black holes Apr 7, 2022 ... Since 2015, two large Earth-based detectors, the Laser Interferometer Gravitational-Wave Observatory (LIGO) in the United States and Europe's ...
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### The Gravitational Universe

May 24, 2013 ... Gravity has its own messenger: Gravitational waves, ripples in the fabric of spacetime. They travel essentially undisturbed and let us peer deep ...
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### Gravitational Waves Should Permanently Distort Space-Time ...

The “gravitational memory effect” predicts that a passing gravitational wave should forever alter the structure of space-time. Physicists have linked the phenomenon to fundamental cosmic symmetries… Dec 8, 2021 ... The “gravitational memory effect” predicts that a passing gravitational wave should forever alter the structure of space-time.
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### Gravitational Anomalies And Thermal Hall Effect In Topological ...

It has been suggested that a temperature gradient will induce a Leduc-Righi,
or thermal Hall, current in the Majorana quasiparticles localized on the
surface of class DIII topological insulators, and that the magnitude of this
current can be related {\it via} an Einstein argument to a Hall-like energy
flux induced by gravity. We critically examine this idea, and argue that the
gravitational Hall effect is more complicated than its familiar analogue. A
conventional Hall current is generated by a {\it uniform} electric field, but
computing the flux from the gravitational Chern-Simons functional shows that
gravitational field {\it gradients} - i.e. tidal forces - are needed to induce
a energy-momentum flow. We relate the surface energy-momentum flux to a
domain-wall gravitational anomaly {\it via} the Callan-Harvey inflow mechanism.
We stress that the gauge invariance of the combined bulk-plus-boundary theory
ensures that the current in the domain wall always experiences a "covariant"
rather than "consistent" an Jan 19, 2012 ... We relate the surface energy-momentum flux to a domain-wall gravitational anomaly {\it via} the Callan-Harvey inflow mechanism. We stress that ...
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**The pages related to gravitational are also listed below: **

### Gravitational Definition & Meaning | Dictionary.com

Gravitational definition, of or relating to the force of attraction between two masses: The gravitational effect of the moon causes the rise and fall of ocean tides. See more. Gravitational definition, of or relating to the force of attraction between two masses: The gravitational effect of the moon causes the rise and fall of ...
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### What Are Gravitational Waves? | LIGO Lab | Caltech

A description of gravitational waves Gravitational waves are 'ripples' in space-time caused by some of the most violent and energetic processes in the Universe. Albert Einstein predicted the ...
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