Locations and orientations of current and proposed laser-interferometric
gravitational wave detectors are given in tabular form.Comment: 2 pages, revtex, no figure

Allen, Bruce

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Locations and orientations of current and proposed laser-interferometric gravitational wave detectors are given in tabular form

Allen, B.

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arXiv:gr-qc/9607075v1  30 Jul 1996Gravitational Wave Detector SitesB. AllenDepartment of Physics, University of Wisconsin - Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201, U.S.A.(February 7, 2008)Locations and orientations of current and proposed laser-interferometric gravitational wave de-tectors are given in tabular form.I. INTRODUCTIONGravitational waves are one of the most robust predictions of Einstein’s general theory of relativity, but haveonly been observed indirectly, as the dominant energy-loss mechanism in the binary pulsar PSR1913+16. A newgeneration of laser-interferometric gravitational wave detectors is currently under construction, which should permitdirect observations of these waves. The analysis of signals from these detectors, and the pioneering work on dataanalysis from existing “prototype” detectors, requires correlating signals from different sites in order to extract themost information. Such analysis requires precise knowledge of the locations and orientations of the detectors. Thispaper presents a table of this data for the current and proposed earth-based laser-interferometric detectors.II. SITE AND ORIENTATION DATAEach line of Table I contains information about one detector. The data contained in each column is:1. The name of the detector or project.2. The name of the geographical site or location.3. A nominal “date of operation” (either past, current, or anticipated).4. The arm length, in meters.5. The location of the central (corner) station on the earth’s surface. The lattitude is measured in degrees Northfrom the equator, and the longitude is measured in degrees West of Greenwich, England.6. The orientation of the first arm, measured in degrees counter-clockwise from true North.7. The orientation of the second arm, measured in degrees counter-clockwise from true North.8. The source of information about the location and orientation.III. NOTES1. The orientation of the Glasgow detector was changed in 1995, hence both the earlier and current orientationsare given.2. The LIGO site in Hanford Washington will have both 2 km and 4 km arms contained in the same vacuum tube.3. The orientation angles given for the GEO-600 site are not in error; for practical reasons the arms are separatedby 94.33◦.1ACKNOWLEDGMENTSThe author thanks participants in these different projects for providing and verifying this site information. Thework of BA was supported by NSF grants PHY91-05935 and PHY95-07740.[1] Albrecht Rüdiger, Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany. email:atr@mpq.mpg.de[2] Fred Raab, LIGO Project, California Institute of Technology, Pasadena, CA 91125, USA. email: fjr@ligo.caltech.edu[3] Ei-ichi Mizuno, The Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara City, 229 Japan. email:hide@pleiades.sci.isas.ac.jp[4] Masa-Katsu Fujimoto, National Astronomical Observatory, Mitaka, Tokyo 181, Japan. email:fujimoto@gravity.mtk.nao.ac.jp[5] Jim Hough, Department of Physics and Astronomy, University of Glasgow, Glasgow, G128QQ, UK. email:hough@physics.gla.ac.uk[6] Rosa Poggiani, Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Pisa, Via Livornese, 582/a, I-56010 S. Piero aGrado, Pisa, Italy. email: poggiani@pisa.infn.itTABLE I. Site and orientation of earth-based interferometric gravitational-wave detectors.Project Location Year Length (m) Corner Location Arm 1 Arm 2 SourceGlasgow Glasgow, GBR 1977 10 55.87◦N 4.28◦W 77.0◦ 167.0◦ [1]CIT Pasadena, CA, USA 1980 40 34.17◦N 118.13◦W 180.0◦ 270.0◦ [2]MPQ Garching, GER 1983 30 48.24◦N −11.68◦W 329◦ 239◦ [1]ISAS-100 Tokyo, JPN 1986 100 35.57◦N −139.47◦W 42.0◦ 135.0◦ [3]TAMA-20 Tokyo, JPN 1991 20 35.68◦N −139.54◦W 45.0◦ 315.0◦ [4]Glasgow Glasgow, GBR 1995 10 55.87◦N 4.28◦W 62.0◦ 152.0◦ [5]TAMA-300 Tokyo, JPN 1998 300 35.68◦N −139.54◦W 90.0◦ 180.0◦ [4]GEO-600 Hannover, GER 1999 600 52.25◦N −9.81◦W 25.94◦ 291.61◦ [1]VIRGO Pisa, ITA 2000 3000 43.63◦N −10.5◦W 71.5◦ 341.5◦ [6]LIGO Hanford, WA, USA 2000 4000 46.45◦N 119.41◦W 36.8◦ 126.8◦ [2]LIGO Livingston, LA, USA 2000 4000 30.56◦N 90.77◦W 108.0◦ 198.0◦ [2]2

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