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- https://phys.libretexts.org/Courses/Skidmore_College/Introduction_to_General_Relativity/06%3A_Gravitational_Waves/6.03%3A_LIGOThe first discovery of a gravitational wave occurred at the Laser Interferometer Gravitational Wave Observatory (LIGO) in 2015. LIGO actually consists of two detectors, one in Hanford, Washington, and...The first discovery of a gravitational wave occurred at the Laser Interferometer Gravitational Wave Observatory (LIGO) in 2015. LIGO actually consists of two detectors, one in Hanford, Washington, and the other in Livingston, Louisiana (see Figure 6.3.1). One of the reasons for having two detectors is because any real gravitational wave would necessarily have to travel though both detectors; if only one detector sees what it thinks is a gravitational wave, then it could just be noise.
- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/34%3A_Frontiers_of_Physics/34.02%3A_General_Relativity_and_Quantum_GravityWe know from "Special Relativity" that relativity is the study of how different observers measure the same event, particularly if they move relative to one another. Einstein’s theory of general relati...We know from "Special Relativity" that relativity is the study of how different observers measure the same event, particularly if they move relative to one another. Einstein’s theory of general relativity describes all types of relative motion including accelerated motion and the effects of gravity. General relativity encompasses special relativity and classical relativity in situations where acceleration is zero and relative velocity is small compared with the speed of light.
- https://phys.libretexts.org/Bookshelves/Relativity/General_Relativity_(Crowell)/09%3A_Gravitational_Waves/9.02%3A_Gravitational_Radiation_(Part_1)The Hulse-Taylor system contains two neutron stars orbiting around their common center of mass, and the period of the orbit is observed to be decreasing gradually over time. This is interpreted as ev...The Hulse-Taylor system contains two neutron stars orbiting around their common center of mass, and the period of the orbit is observed to be decreasing gradually over time. This is interpreted as evidence that the stars are losing energy to radiation of gravitational waves. As we’ll see later, the rate of energy loss is in excellent agreement with the predictions of general relativity.
