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A Weber bar is a device designed to detect gravitational waves, first devised and constructed by physicist Joseph Weber at the University of Maryland. The device consisted of aluminium cylinders, 2 meters in length and 1 meter in diameter , antennae for detecting gravitational waves .
The earliest type was the room-temperature bar-shaped antenna called a Weber bar; these were dominant in 1960s and 1970s and many were built around the world. It was claimed by Weber and some others in the late 1960s and early 1970s that these devices detected gravitational waves; however, other experimenters failed to detect gravitational ...
Allegro was a ground-based, cryogenic resonant Weber bar, gravitational-wave detector [1] run by Warren Johnson, et al. at Louisiana State University in Baton Rouge, Louisiana. The detector was commissioned in the early 1990s, and was decommissioned in 2008.
2019 – Advanced LIGO and VIRGO detect GW190814, the collision of a 26-solar-mass black hole and a 2.6-solar-mass object, either an extremely heavy neutron star or a very light black hole. [292] [293] This is the largest mass gap seen in a gravitational-wave source to-date.
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Virgo is a wide-band detector whose sensitivity ranges from a few Hz to 10 kHz; a 2011 Virgo sensitivity curve is plotted with a log-log scale. [94] The most common measure of gravitational-wave-detector sensitivity is the horizon distance, defined as the distance at which a reference target produces a signal-to-noise ratio of 8
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The Joseph Weber Award for Astronomical Instrumentation is awarded by the American Astronomical Society to an individual for the design, invention or significant improvement of instrumentation leading to advances in astronomy. [1] It is named after physicist Joseph Weber. The awards tend to be for a career of instrument development rather than ...