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Published January 1, 2009 | Published
Journal Article Open

Einstein@Home search for periodic gravitational waves in LIGO S4 data

Abbott, B. P.
Abbott, R.
Adhikari, Rana X. ORCID icon
Ajith, P ORCID icon
Allen, B.
Allen, G.
Amin, R.
Anderson, D. P.
Anderson, S. B.
Anderson, W. G.
Arain, M. A.
Araya, M.
Armandula, H.
Armor, P.
Aso, Y.
Aston, S.
Aufmuth, P.
Aulbert, C.
Babak, S.
Ballmer, S.
Bantilan, H.
Barish, B. C.
Barker, C.
Barker, D.
Barr, B.
Barriga, P.
Barton, M. A.
Bastarrika, M.
Bayer, K.
Betzwieser, J.
Beyersdorf, P. T.
Bilenko, I. A.
Billingsley, G. ORCID icon
Biswas, R. ORCID icon
Black, E.
Blackburn, K.
Blackburn, L.
Blair, D.
Bland, B.
Bodiya, T. P.
Bogue, L.
Bork, R.
Boschi, V.
Bose, S. ORCID icon
Brady, P. R. ORCID icon
Braginsky, V. B.
Brau, J. E.
Brinkmann, M.
Brooks, A.
Brown, D. A. ORCID icon
Brunet, G.
Bullington, A.
Buonanno, A.
Burmeister, O.
Byer, R. L. ORCID icon
Cadonati, L.
Cagnoli, G.
Camp, J. B.
Cannizzo, J.
Cannon, K.
Cao, J.
Cardenas, L.
Casebolt, T.
Castaldi, G.
Cepeda, C.
Chalkley, E.
Charlton, P.
Chatterji, S.
Chelkowski, S.
Chen, Yanbei ORCID icon
Christensen, N.
Clark, D.
Clark, J.
Cokelaer, T.
Conte, R.
Cook, D.
Corbitt, T. ORCID icon
Coyne, D. ORCID icon
Creighton, J. D. E.
Creighton, T. D.
Cumming, A.
Cunningham, L.
Cutler, R. M.
Dalrymple, J.
Danzmann, K.
Davies, G.
DeBra, D.
Degallaix, J.
Degree, M.
Dergachev, V.
Desai, S.
DeSalvo, R.
Dhurandhar, S.
Diaz, M.
Dickson, J.
Dietz, A.
Donovan, F.
Dooley, K. L.
Doomes, E. E.
Drever, R. W. P.
Duke, I.
Dumas, J. C.
Dupuis, R. J.
Dwyer, J. G.
Echols, C.
Effler, A.
Ehrens, P.
Ely, G.
Espinoza, E.
Etzel, T.
Evans, T.
Fairhurst, S.
Fan, Y.
Fazi, D.
Fehrmann, H.
Fejer, M. M. ORCID icon
Finn, L. S.
Flasch, K.
Fotopoulos, N.
Freise, A. ORCID icon
Frey, R.
Fricke, T.
Fritschel, P.
Frolov, V. V.
Fyffe, M.
Garofoli, J.
Gholami, I.
Giaime, J. A.
Giampanis, S.
Giardina, K. D.
Goda, K.
Goetz, E.
Goggin, L.
Gonzalez, G.
Gossler, S.
Gouaty, R.
Grant, A.
Gras, S.
Gray, C.
Gray, M.
Greenhalgh, R. J. S.
Gretarsson, A. M.
Grimaldi, F.
Grosso, R.
Grote, H.
Grunewald, S.
Guenther, M.
Gustafson, E. K.
Gustafson, R.
Hage, B.
Hallam, J. M.
Hammer, D.
Hanna, C.
Hanson, J.
Harms, J. ORCID icon
Harry, G.
Harstad, E.
Hayama, K.
Hayler, T.
Heefner, J.
Heng, I. S.
Hennessy, M.
Heptonstall, A.
Hewitson, M.
Hild, S.
Hirose, E.
Hoak, D.
Hosken, D.
Hough, J.
Huttner, S. H.
Ingram, D.
Ito, M.
Ivanov, A.
Johnson, B.
Johnson, W. W.
Jones, D. I.
Jones, G.
Jones, R.
Ju, L.
Kalmus, P.
Kalogera, V. ORCID icon
Kamat, S.
Kanner, J. ORCID icon
Kasprzyk, D.
Katsavounidis, E.
Kawabe, K.
Kawamura, S.
Kawazoe, F.
Kells, W.
Keppel, D. G.
Khalili, F. Ya.
Khan, R.
Khazanov, E.
Kim, C.
King, P.
Kissel, J. S. ORCID icon
Klimenko, S.
Kokeyama, K.
Kondrashov, V.
Kopparapu, R. K.
Kozak, D. ORCID icon
Kozhevatov, I.
Krishnan, B.
Kwee, P.
Lam, P. K.
Landry, M.
Lang, M. M.
Lantz, B.
Lazzarini, A.
Lei, M.
Leindecker, N.
Leonhardt, V.
Leonor, I.
Libbrecht, K. ORCID icon
Lin, H.
Lindquist, P.
Lockerbie, N. A.
Lodhia, D.
Lormand, M.
Lu, P.
Lubinski, M.
Lucianetti, A.
Lück, H.
Machenschalk, B.
MacInnis, M.
Mageswaran, M.
Mailand, K.
Mandic, V.
Márka, S.
Márka, Z.
Markosyan, A.
Markowitz, J.
Maros, E.
Martin, I. W.
Martin, R. M.
Marx, J. N.
Mason, K.
Matichard, F.
Matone, L.
Matzner, R.
Mavalvala, N.
McCarthy, R.
McClelland, D. E.
McGuire, S. C.
McHugh, M.
McIntyre, G.
McIvor, G.
McKechan, D.
McKenzie, K.
Meier, T.
Melissinos, A.
Mendell, G.
Mercer, R. A.
Meshkov, S.
Messenger, C. J.
Meyers, D.
Miller, J.
Minelli, J.
Mitra, S.
Mitrofanov, V. P.
Mitselmakher, G.
Mittleman, R.
Miyakawa, O.
Moe, B.
Mohanty, S.
Moreno, G.
Mossavi, K.
MowLowry, C.
Mueller, G. ORCID icon
Mukherjee, S.
Mukhopadhyay, H.
Müller-Ebhardt, H.
Munch, J.
Murray, P.
Myers, E.
Myers, J.
Nash, T.
Nelson, J.
Newton, G.
Nishizawa, A. ORCID icon
Numata, K.
O'Dell, J.
Ogin, G.
O'Reilly, B.
O'Shaughnessy, R.
Ottaway, D. J. ORCID icon
Ottens, R. S.
Overmier, H.
Owen, B. J.
Pan, Y.
Pankow, C.
Papa, M. A.
Parameshwaraiah, V.
Patel, P.
Pedraza, M.
Penn, S.
Perreca, A.
Petrie, T.
Pinto, I. M.
Pitkin, M.
Pletsch, H. J.
Plissi, M. V.
Postiglione, F.
Principe, M.
Prix, R.
Quetschke, V. ORCID icon
Raab, F.
Rabeling, D. S.
Radkins, H.
Rainer, N.
Rakhmanov, M.
Ramsunder, M.
Rehbein, H.
Reid, S.
Reitze, D. H.
Riesen, R.
Riles, K.
Rivera, B.
Robertson, N. A.
Robinson, C.
Robinson, E. L.
Roddy, S.
Rodriguez, A.
Rogan, A. M.
Rollins, J.
Romano, J. D.
Romie, J.
Route, R.
Rowan, S.
Rüdiger, A.
Ruet, L.
Russell, P.
Ryan, K.
Sakata, S.
Samidi, M.
Sancho de la Jordana, L.
Sandberg, V.
Sannibale, V.
Saraf, S.
Sarin, P.
Sathyaprakash, B. S.
Sato, S.
Saulson, P. R.
Savage, R.
Savov, P.
Schediwy, S. W.
Schilling, R.
Schnabel, R. ORCID icon
Schofield, R.
Schutz, B. F.
Schwinberg, P.
Scott, S. M.
Searle, A. C.
Sears, B.
Seifert, F.
Sellers, D.
Sengupta, A. S.
Shawhan, P.
Shoemaker, D. H.
Sibley, A.
Siemens, X.
Sigg, D.
Sinha, S.
Sintes, A. M.
Slagmolen, B. J. J.
Slutsky, J.
Smith, J. R.
Smith, M. R.
Smith, N. D.
Somiya, K.
Sorazu, B.
Stein, L. C. ORCID icon
Stochino, A.
Stone, R.
Strain, K. A.
Strom, D. M.
Stuver, A.
Summerscales, T. Z.
Sun, K. X.
Sung, M.
Sutton, P. J.
Takahashi, H.
Tanner, D. B. ORCID icon
Taylor, R.
Taylor, R.
Thacker, J.
Thorne, K. A.
Thorne, K. S.
Thüring, A.
Tokmakov, K. V.
Torres, C.
Torrie, C.
Traylor, G.
Trias, M.
Tyler, W.
Ugolini, D.
Ulmen, J.
Urbanek, K.
Vahlbruch, H.
Van Den Broeck, C.
van der Sluys, M.
Vass, S.
Vaulin, R.
Vecchio, A. ORCID icon
Veitch, J.
Veitch, P.
Vigeland, S.
Villar, A.
Vorvick, C.
Vyachanin, S. P.
Waldman, S. J.
Wallace, L.
Ward, H.
Ward, R.
Weinert, M.
Weiss, R.
Wen, S.
Wette, K.
Whelan, J. T.
Whitbeck, D. M.
Whitcomb, S. E.
Whiting, B. F. ORCID icon
Wilkinson, C.
Willems, P. A.
Williams, H. R.
Williams, L.
Willke, B.
Wilmut, I.
Winkler, W.
Wipf, C. C.
Wiseman, A. G.
Woan, G.
Wooley, R.
Worden, J.
Wu, W.
Yakushin, I.
Yamamoto, H.
Yan, Z.
Yoshida, S.
Zanolin, M.
Zhang, J.
Zhang, L. ORCID icon
Zhao, C. ORCID icon
Zotov, N.
Zucker, M. E. ORCID icon
Zweizig, J. ORCID icon
Weinstein, Alan J. ORCID icon


A search for periodic gravitational waves, from sources such as isolated rapidly spinning neutron stars, was carried out using 510 h of data from the fourth LIGO science run (S4). The search was for quasimonochromatic waves in the frequency range from 50 to 1500 Hz, with a linear frequency drift _f (measured at the solar system barycenter) in the range -f/T < f <0: 1f/T, where the minimum spindown age T was 1000 yr for signals below 300 Hz and 10 000 yr above 300 Hz. The main computational work of the search was distributed over approximately 100 000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 h, despite the large parameter space searched. No statistically significant signals were found. The sensitivity of the search is estimated, along with the fraction of parameter space that was vetoed because of contamination by instrumental artifacts. In the 100 to 200 Hz band, more than 90% of sources with dimensionless gravitational-wave strain amplitude greater than 10^(-23) would have been detected.

Additional Information

© 2009 The American Physical Society. The authors thank the tens of thousands of volunteers who have supported the Einstein@Home project by donating their computer time and expertise for this analysis. Without their contributions, this work would not have been possible. The authors gratefully acknowledge the support of the United States National Science Foundation for the construction and operation of the LIGO Laboratory and the Science and Technology Facilities Council of the United Kingdom, the Max-Planck-Society, and the State of Niedersachsen/Germany for support of the construction and operation of the GEO600 detector. The authors also gratefully acknowledge the support of the research by these agencies and by the Australian Research Council, the Council of Scientific and Industrial Research of India, the Istituto Nazionale di Fisica Nucleare of Italy, the Spanish Ministerio de Educaciόn y Ciencia, the Conselleria d'Economia, Hisenda i Innovaciό of the Govern de les Illes Balears, the Scottish Funding Council, the Scottish Universities Physics Alliance, the National Aeronautics and Space Administration, the Carnegie Trust, the Leverhulme Trust, the David and Lucile Packard Foundation, the Research Corporation, and the Alfred P. Sloan Foundation. This document has been assigned LIGO Laboratory document No. LIGO-P080021-03-Z.

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