Apr 5, 2016 · The gravitational waves that were detected swept up in frequency and amplitude from an undetectable level at a few tens of Hz to abut 150 Hz as the black holes merged. This is known as a "chirp". Gravitational wave sources might have a variety of frequencies. For binary systems, the principle gravitational frequency is twice the orbital frequency.

Gravitational waves are generated in a manner analogous to electromagnetic waves. Classically, changing electric or magnetic fields can generate electromagnetic waves, a radio antenna being a good example, and also radiation is emitted by accelerating or decelerating particles.

Mar 24, 2016 · Gravitational waves are the sinusoidal changes on space time induced by specific time dependent changes in the stress-energy tensor. In a Newtonian frame it is called acceleration , which is not enough to get a gravitational wave, only asymmetric mass distributions will give gravitational waves.

In physics, gravitational waves are ripples in the curvature of space-time which propagate as waves, travelling outward from the source. Predicted in 1916 1 by Albert Einstein to exist on the basis of his theory of general relativity, 3 gravitational waves theoretically transport energy as gravitational radiation.

Feb 12, 2016 · As far as I know, gravitational waves are not absorbed & reemitted and therefore travel with the speed of light in vacuum c as opposed to EM-waves which travel at a speed c/n. At the bottom of this link is an example of how you could calculate the refractive index in space for radio waves: link (Edit: Please note that the link uses a different ...

Gravity is a fundamental force between masses, but gravitational waves are just a secondary effect related to the dynamics of a gravitational system in certain circumstances. Whether gravity is transmitted instantaneously or not has been a controversial issue since Laplace.

Oct 27, 2012 · Gravitational waves definitely propagate in a given direction but the effect that they have on matter is completely perpendicular to the direction of motion. Below is a picture of what the metric of a passing wave does to space (the wave traveling is perpendicular to the screen).

Aug 17, 2016 · Gravitational waves, though transverse, can be thought of as similar to sound waves: A sound wave, as it moves through a medium the sound wave creates alternating volumes of greater and lesser particle density. Gravitational waves do something similar, except the medium is spacetime itself.

Jun 6, 2015 · Calculating the power emitted as gravitational waves is relatively straightforward, and you'll find it described in any advanced work on GR. I found a nice description in Gravitational Waves: Sources, Detectors and Searches. To summarise an awful lot of algebra, the power emitted as gravitational waves by a rotating object is approximately:

Feb 20, 2018 · That is why to be able to detect cosmic binary star mergers or black hole mergers from it's gravitational waves pattern,- we need very huge gravitational interferometers,- Cosmic Explorer interferometer is planned to have $40~\text{km}$ length arms ! Compared to this laser interferometers are child's toy :-)