| detector | location | position | operational date | arm length |
|---|---|---|---|---|
| in operation | ||||
| (CalTech) | Pasadena California, USA | 34°10'N 118°07'W | 1983 | 38 m |
| (Garching) | Garching Germany | 48°14'40"N 11°40'30"E | 1983 | 30 m |
| (Glasgow) | Glasgow United Kingdom | 55°52'N 4°17'W | 1980 | 10 m |
| (MIT) | Cambridge Massachusetts, USA | 42°22'N 71°06'W | 1970s | 5 m |
| (Orsay) | Orsay France | 48°42'N 2°12'E | 1980s | 5 m |
| (Pisa) | Pisa Italy | 43°43'N 10°24'E | late 1980s | 2 m |
| TAMA | Mitaka Japan | 35°40'30"N 139°32'10"E | 20 m | |
| TENKO-10 | Japan | late 1980s | 10 m | |
| Guangzhou PRC | 23°10'N 113°20'E | late 1980s | 3 m | |
| Beijing PRC | 40°00'N 116°30'E | late 1980s | 0.5 m | |
| GEO 600 | Hannover Germany | 52°14'42.528"N 9°48'25.894"E | 2002 | 600 m |
| LIGO-Hanford | Hanford Reservation Washington, USA | 46°27'8.5"N 119°24'27.1"W | 2002 | 4000 m |
| LIGO-Livingston | Livingston Louisiana, USA | 30°33'46.0"N 90°46'27.3"W | 2002 | 4000 m |
| TAMA300 | Mitaka Japan | 35°40'25"N 139°32'21"E | 1999? | 300 m |
| VIRGO | Cascina Italy | 43°38'N 10°30'E | 2002? | 3000 m |
| under construction | ||||
| AIGO | Gingin Western Australia, Australia | 31°10'S 115°50'E | planned | 3000 m? |
| Dulkyn | Kazan Tatarstan, Russia | 55°45'N 49°10'E | ? | 1.5 m |
| TENKO-100 | Johor Bahru Malaysia | 1°25'N 103°45'E | ? | 100 m |
| formerly operating | ||||
| (Forward) | Malibu California, USA | 34°00'N 118°40'W | 1978 | 2 m |
| Boulder Colorado, USA | 40°05'N 105°15'W | (2 years) | ||
| TENKO-100 | Sagamihara Japan | 35°34'04"N 139°28'01"E | -1997 | 100 m |
| detector | location | position | operational date | bar temperature |
|---|---|---|---|---|
| in operation | ||||
| ALLEGRO | Baton Rouge Louisiana | 30°27'45"N 91°10'44"W | 1991 | 4.2 K |
| ALTAIR | Frascati Italy | 41°48'N 12°41'E | 1980 | 2 K |
| AURIGA | Lengaro Italy | 45°21'12"N 11°56'54"E | 1997 | 0.2 K |
| EXPLORER | Geneva Switzerland | 46°27'N 6°12'E | 1989 | 2.6 K |
| NAUTILUS | Rome Italy | 41°49'26"N 12°40'21"E | 1994 | 0.1 K |
| NIOBE | Perth Western Australia, Australia | 31°56'S 115°49'E | 1993 | 5.0 K |
| formerly operating | ||||
| (Weber) | College Park Maryland, USA | 39°00'N 76°56'W | 1963-1966 | ambient |
| (Weber) | College Park Maryland, USA | 39°00'N 76°56'W | 1966-? | ambient |
| (Weber) | College Park Maryland, USA | 39°00'N 76°56'W | 1966-? | ambient |
| (Weber) | College Park Maryland, USA | 39°00'N 76°56'W | 1968-? | ambient |
| (Argonne) | Chicago Illinois, USA | 41°43'N 87°10'W | 1968-1976? | ambient |
| (Weber) | College Park Maryland, USA | 39°00'N 76°56'W | ? | ambient |
| (Bell Laboratories) | Florham Park? New Jersey, USA | 40°47'N 74°23'W | 1971 | ambient |
| (Bell Laboratories) | New Jersey, USA | 40°N 74°W | 1971 | ambient |
| (Max Planck Institute) | Munich West Germany | 48°08'N 11°35'E | 1971-1974 | ambient |
| (ESRIN) | Frascati Italy | 41°48'N 12°41'E | 1971-1974 | ambient |
| (Bell Laboratories) | New Jersey, USA | 40°N 74°W | 1972 | ambient |
| (Garwin) | 1973 | ambient | ||
| (Braginksy) | Moscow Russia, USSR | 55°40'N 37°40'E | 1973 | ambient |
| (Braginksy) | Moscow Russia, USSR | 55°40'N 37°40'E | 1973 | ambient |
| (Bell Laboratories) | New Jersey, USA | 40°N 74°W | 1973-1981 | ambient |
| Rochester New York, USA | 43°10'N 77°37'W | 1975? | ambient | |
| (Stanford) | Stanford California, USA | 37°25'N 122°10'W | 1970s? | ambient |
| (Drever) | Glasgow Scotland, United Kingdom | 55°55'N 4°15'W | 1975 | ambient |
| (Drever) | Glasgow Scotland, United Kingdom | 55°55'N 4°15'W | 1975 | ambient |
| (Allen/ Christodoulides) | Reading England, United Kingdom | 51°28'N 0°59'W | 1975 | ambient |
| (Allen/ Christodoulides) | Reading England, United Kingdom | 51°28'N 0°59'W | 1975 | ambient |
| Rochester New York, USA | 43°10'N 77°37'W | 1978-1981 | ambient | |
| (Hirakawa/ Narihara) | Tokyo Japan | 35°40'N 139°30'E | 1975 | ambient |
| (Hirakawa/ Narihara) | Tokyo Japan | 35°40'N 139°30'E | 1975 | ambient |
| Rome Italy | 41°49'N 12°40'E | 1978-1986 | 4.2 K | |
| GEOGRAV | Rome Italy | 41°49'N 12°40'E | 1984-1988 | ambient |
| (Stanford) | Stanford California, USA | 37°25'N 122°10'W | 1986-1989 | 2 K |
Louisiana, USA | 30°N 91°W | 1986 | 4 K? | |
| CRAB III | Tokyo Japan | 35°40'N 139°30'E | ? | 4.2 K? |
| (Zhongshan Univ.) | Guangzhou PRC | 23°10'N 113°20'E | ? | 300 K |
| detector | location | position | operational date | bar temperature |
|---|---|---|---|---|
| proposed | ||||
| GRAVITON | Sao Paulo? Brazil | proposed | 0.1 K | |
| TIGA | Louisiana, USA | proposed | 4 K? | |
| MiniGRAIL | Leiden Netherlands | proposed | 0.02 K | |
| detector | type | location | operational date | notes |
|---|---|---|---|---|
| former | ||||
| NASA/JPL DSN and Voyager 1/2 | radio signal doppler tracking | Earth-based Deep Space Network and Voyager 1/2 in outer solar system | "one-arm" detector | |
| NASA/JPL DSN and Pioneer 10/11 | radio signal doppler tracking | Earth-based Deep Space Network and Pioneer 10/11 in outer solar system | "one-arm" detector | |
| NASA/JPL DSN and Galileo | radio signal doppler tracking | Earth-based Deep Space Network and Galileo en route to Jupiter | "one-arm" detector | |
| NASA/JPL DSN and Ulysses | radio signal doppler tracking | Earth-based Deep Space Network and Ulysses | "one-arm" detector | |
| planned | ||||
| NASA/JPL DSN and Cassini | radio signal doppler tracking | Earth-based Deep Space Network and Cassini en route to Saturn | planned 2001 | "one-arm" detector |
| proposed | ||||
| LISA (NASA/ESA) | laser interferometer | orbiting Sun at 1 AU, 20° behind Earth | proposed 2009-2013 | three spacecraft forming equilateral triangle, each side 5,000,000 km |
| OMEGA | laser interferometer | orbiting Earth at 600,000 km | proposed | four spacecraft forming equilateral triangle, each side 1,040,000 km (two spacecraft at one vertex, 5 km apart) |
Notes: operational dates are dates of first efforts to detect gravitational waves; detectors generally have not operated continuously from those dates. For Earth-based laser interferometers, arm lengths are in meters. For bar detectors, operating temperatures are in degrees Kelvin.
© 2001, 2003 by Wm. Robert Johnston.
Last modified 8 September 2003.
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