Gourt > Science > Astronomy > Institutions > Observatories > Gravitational Waves
In physics, a gravitational wave is a fluctuation in the curvature of space-time which propagates as a wave. Gravitational radiation results when gravitational waves are emitted from some object or system of gravitating objects.
(Gravitational waves are sometimes called gravity waves, but this term should be reserved for a completely different kind of wave encountered in hydrodynamics.)
Characteristics
In Einstein's theory of General relativity, the force of gravity is due to spacetime curvature. The rapid motion of mass in some region will generate ripples in spacetime itself which radiate outward as gravitational waves. Like electromagnetic radiation, gravitational radiation is believed to travel at the speed of light, however while electromagnetic waves are 'spin-1' (meaning their direction of oscillation is perpendicular to their direction of propagation) gravitational waves are 'spin-2'. This means that they oscillate in two directions, both perpendicular to the direction of propagation, with the oscillations being 180 degrees out of phase. More on [ Gravitational radiation ]
Astro Particle :: Particle
Special Relativity
Pre-observing talks underway at Cardiff. Rob Hollow gave overview. Matthew Sutton from Cardiff now giving one on gravitational waves.
PULSEatParkes (PULSE@Parkes) Mon, 07 Dec 2009 15:10:17 -0000
Pre-observing talks underway at Cardiff. Rob Hollow gave overview. Matthew Sutton from Cardiff now giving one on gravitational waves.
ahhh home early for a change. time for some rants on how gravitational waves exist, even though i don't think they do!
HarriParf (Harriet Parfitt) Mon, 07 Dec 2009 10:43:06 -0000
ahhh home early for a change. time for some rants on how gravitational waves exist, even though i don't think they do!
Oh, and when it's looking for these gravitational waves, it's got the COOLEST screensaver ever... just wish LHC@home worked w/ macs.
h4x0r_ch1x (Rachel) Mon, 07 Dec 2009 05:46:59 -0000
Oh, and when it's looking for these gravitational waves, it's got the COOLEST screensaver ever... just wish LHC@home worked w/ macs.
My computer is helping look for gravitational waves in its spare time using Einstein@home! I'm so proud of it now =D
h4x0r_ch1x (Rachel) Mon, 07 Dec 2009 05:43:17 -0000
My computer is helping look for gravitational waves in its spare time using Einstein@home! I'm so proud of it now =D
Wow! Nice proof-based read about Gravitational waves :) http://nobelprize.org/nobel_prizes/physics/laureates/1993/press.html
raghuarr (Raghavendra S) Sat, 05 Dec 2009 11:27:12 -0000
Wow! Nice proof-based read about Gravitational waves :) http://nobelprize.org/nobel_prizes/physics/laureates/1993/press.html
Today I read about gravitational waves, pulsars, and Einstein. http://nanograv.org
chen23 (Eric Chen) Fri, 04 Dec 2009 01:32:09 -0000
Today I read about gravitational waves, pulsars, and Einstein. http://nanograv.org
Australian Consortium for Interferometric Gravitational Astronomy - Introduction, objectives, news, management structure, board, and institutions.
Australian International Gravitational Research Centre - Research, public outreach, documents, logs, and information.
Center for Gravitational Wave Physics - People, visitors, research, outreach, this week, events, news, and links.
Chilling Mirrors with Light - Physics news article.
Meta Description: [ A portion of Number 450 ]
ESA - Space Science - Contents, space science, multimedia, media centre, resources, missions, and services.
Meta Description: [ SCI_Mission.abstract ]
GEO 600 - Project aiming at the direct detection of gravitational waves by means of a laser interferometer of 600 m armlength.
Meta Description: [ The GEO600 home page from Hannover. Visit us and learn about the project, the progress in setting up the detector, the peoples involved ... ]
Gravitational Wave Group - Members, research, thesis, proceedings, LCGT Project, information, and links.
Gravity Wave Analysis from LIGO Prototype - Physics news article.
Meta Description: [ A portion of Number 442 ]
Laser Interferometer Gravitational-Wave Observatory - Dedicated to the detection of cosmic gravitational waves and the harnessing of these waves for scientific research.
Laser Interferometer Space Antenna - General and technical information with research studies.
Meta Description: [ The Laser Interferometer Space Antenna is a mission that will detect and study gravitational waves coming from sources involving massive black holes and galactic binaries. ]
LIGO Hanford Observatory - Overview, science, news, events, star parties, teacher's corner, field trips, information, and directions
LIGO Livingston - General public, staff and collaborators, installation, teacher resources, and index.
Listen to the Universe - Simulated sounds of gravitational waves created by spiraling binary systems.
Ripples in Curvature - Transparencies of a talk with sound files of compact coalescing binaries.
Rome 1 Group of the ROG Collaboration - Information, antennas, papers, research fields of interest, data exchange, future projects, and related groups.
TAMA300 - To develop advanced techniques needed for a future km-sized interferometer and catch gravitational waves that may occur by chance within our local group of galaxies.
The AURIGA Detector - Ultracryogenic gravitational wave detector experiment at Legnaro National Laboratories, Italy.
The Virgo Project - Collaboration between teams for the realization of an interferometric gravitational wave detector.
Tsubono Group - The group, data archive, and links.
Washington University Gravity Group - Large collection of gravity links.
Meta Description: [ Washington University Physics Department Gravity Group ]
WUGRAV - Computer simulated movies of colliding neutron stars, gravitational waves propagation, and older movies.
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