Physics Asked by Aditya Raj on September 28, 2021
Is it possible that all moving particle release gravitational wave?
I was trying to study gravitational wave and a question stuck in my mind. If any mass can bend space time and is moving it will also create ripple in space time. And as every thing in space is moving, why do we detect only a few gravitational waves.
Is it possible that all moving particle release gravitational wave?
No. For example, a mass moving at constant velocity does not radiate gravitational waves. (It has a time-dependent gravitational field, but that field doesn’t carry energy away like a gravitational wave does.) Neither does a spherically-symmetric spinning mass radiate, even though all parts of it are accelerating.
However, asymmetric accelerated motion tends to produce gravitational waves. For example, when you wave your hand you produce a tiny gravitational wave. Unfortunately, this wave is so weak that it cannot be measured with current or foreseeable technology.
Technically, but leaving out some details, a system needs a changing mass quadrupole moment to radiate.
why we can detect only few gravitational waves
It takes very massive objects undergoing high acceleration — such as two black holes spiraling together — to produce a wave strong enough for our current technology to measure.
Answered by G. Smith on September 28, 2021
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