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Gravitational waves

Astronomy Gravitational WaveGravity

Gravitational Waves
In Einstein's General Theory of Relativity, where space, time and gravity are interwoven into one self-consistent theory, ...

 


Gravitational Waves :
Superficially, there are many similarities between gravity and electricity; for example, ...

Gravitational waves are usually produced in an interaction between two or more compact masses. Such interactions include the binary orbit of two black holes, a merge of two galaxies, or two neutron stars orbiting each other.

Definition: gravitational waves: Ripples in space-time caused by the motion of objects in the universe. The most notable sources are orbiting neutron stars, merging black holes, and collapsing stars.

Gravitational waves, which have not yet been detected, are fluctuations in space-time caused by the motion of massive objects, and are predicted in Einstein's general theory of relativity.

gravitational waves
weak, wavelike disturbances which represent the radiation related to the gravitational force; produced when massive bodies are accelerated or otherwise disturbed
gravity ...

Gravitational Waves
Another RS experiment is the gravitational wave search, or gravitational wave experiment (GWE). Gravitational waves are predicted by general relativity, but as of early 2006 they have never been detected directly.

Gravitational Waves
Disturbances or ripples in spacetime predicted by the General Theory of Relativity due to changing distributions of mass such as the spindown of a neutron star binary system or the implosion of a star during a supernova.

Gravitational waves- ripples in space that travel at the speed of light, produced by the movement of very massive bodies
Gravity- force of attraction that is felt between two masses, such as the pull between the Earth and the Moon ...

Gravitational waves may be viewed as coherent states of many gravitons, much like the electromagnetic waves are coherent states of photons. Projects that should find the gravitational waves, such as LIGO and VIRGO, are just getting started.

Gravitational waves have two important and unique properties. First, there is no need for any type of matter to be present in order for the waves to propagate.

^ Gravitational waves have never been directly detected but are widely believed by the scientific community to have actual existence.
[edit] Bibliography ...

[10.2] GRAVITATIONAL WAVES
[10.3] LASER INTERFEROMETRY FOR GRAVITY WAVE DETECTION
[10.4] LIGO ...

However, weak gravitational waves can be described to a good approximation by linearised general relativity, which is linear.

gravitational waves (NASA Thesaurus) Hypothetical waves that travel at the speed of light, by which gravitational attraction is propagated.

Just as accelerating charges can emit electromagnetic waves, accelerating masses can emit gravitational waves.

It would be the first space-based mission to attempt the detection of gravitational waves -- ripples in space-time that are emitted by exotic objects such as black holes.

The resulting gravitational radiation (or gravitational waves) waves ripple outwards through space, traveling at the speed of light. Gravitational waves vibrate in a plane perpendicular to the direction in which it is propagating.

The magnitude of the primordial density fluctuations and gravitational waves they produce may also be too high for some particular models. There are, however, much more serious problems associated with these scenarios.

Radio Science Subsystem that searches for gravitational waves; measures masses and structures of atmospheres
Ultraviolet Imaging Spectrograph that studies structure, chemistry, and composition of atmospheres and rings ...

Radio science subsystem: Searches for gravitational waves in the universe; studies the atmosphere, rings, and gravity fields of Saturn and its moons by measuring telltale changes in radio waves sent from the spacecraft.

Prediction: objects with mass should create ripples in the surrounding spacetime as they move, called gravitational waves. These waves do not travel through spacetime, but are the oscillations of spacetime itself! ...

Using this binary system, they observed indirect evidence of gravitational waves and also tested the general theory of relativity. Several dozen binary pulsars are now known.

near the laser beam into sharp focus, vastly improving the telescope's images. Astronomers use the laser, which was invented 50 years ago, for many tasks, including measuring the distance from Earth to the Moon and looking for gravitational waves.

With my secondary mentor, I used a ... CAD (computer-aided design) tool to iterate the design of a proposed small explorer satellite. This satellite was going to use the aforementioned optics to research gravitational waves.

Suffice it to say that gravitational waves carry off a little bit of the orbital energy and allow the orbits to slowly spiral together (VERY slowly).

If the two have been drawn close enough together by interaction during a common envelope phase, they can spiral together by the radiation of gravitational waves predicted by relativity theory.

See also: Gravitation, Gravitational Wave, Time, Energy, Gravity