APS » Phys. Rev. D » Volume 76 » Issue 8

B. Abbott,¹⁵ R. Abbott,¹⁵ R. Adhikari,¹⁵ J. Agresti,¹⁵ P. Ajith,² B. Allen,^2,54 R. Amin,¹⁹ S. B. Anderson,¹⁵ W. G. Anderson,⁵⁴ M. Arain,⁴¹ M. Araya,¹⁵ H. Armandula,¹⁵ M. Ashley,⁴ S Aston,⁴⁰ P. Aufmuth,³⁸ C. Aulbert,¹ S. Babak,¹ S. Ballmer,¹⁵ H. Bantilan,⁹ B. C. Barish,¹⁵ C. Barker,¹⁶ D. Barker,¹⁶ B. Barr,⁴² P. Barriga,⁵³ M. A. Barton,⁴² K. Bayer,¹⁸ K. Belczynski,²⁶ S. J. Berukoff,¹ J. Betzwieser,¹⁸ P. T. Beyersdorf,²⁹ B. Bhawal,¹⁵ I. A. Bilenko,²³ G. Billingsley,¹⁵ R. Biswas,⁵⁴ E. Black,¹⁵ K. Blackburn,¹⁵ L. Blackburn,¹⁸ B. Blair,⁵³ B. Bland,¹⁶ J. Bogenstahl,⁴² L. Bogue,¹⁷ R. Bork,¹⁵ V. Boschi,¹⁵ S. Bose,⁵⁶ P. R. Brady,⁵⁴ V. B. Braginsky,²³ J. E. Brau,⁴⁵ M. Brinkmann,² A. Brooks,³⁹ D. A. Brown,^15,7 A. Bullington,³² A. Bunkowski,² A. Buonanno,⁴³ O. Burmeister,² D. Busby,¹⁵ W. E. Butler,⁴⁶ R. L. Byer,³² L. Cadonati,¹⁸ G. Cagnoli,⁴² J. B. Camp,²⁴ J. Cannizzo,²⁴ K. Cannon,⁵⁴ C. A. Cantley,⁴² J. Cao,¹⁸ L. Cardenas,¹⁵ K. Carter,¹⁷ M. M. Casey,⁴² G. Castaldi,⁴⁸ C. Cepeda,¹⁵ E. Chalkey,⁴² P. Charlton,¹⁰ S. Chatterji,¹⁵ S. Chelkowski,² Y. Chen,¹ F. Chiadini,⁴⁷ D. Chin,⁴⁴ E. Chin,⁵³ J. Chow,⁴ N. Christensen,⁹ J. Clark,⁴² .P Cochrane,² T. Cokelaer,⁸ C. N. Colacino,⁴⁰ R. Coldwell,⁴¹ M. Coles,¹⁷ R. Conte,⁴⁷ D. Cook,¹⁶ T. Corbitt,¹⁸ D. Coward,⁵³ D. Coyne,¹⁵ J. D. E. Creighton,⁵⁴ T. D. Creighton,¹⁵ R. P. Croce,⁴⁸ D. R. M. Crooks,⁴² A. M. Cruise,⁴⁰ P. Csatorday,¹⁸ A. Cumming,⁴² C. Cutler,⁷ J. Dalrymple,³³ E. D'Ambrosio,¹⁵ K. Danzmann,^38,2 G. Davies,⁸ E. Daw,⁴⁹ D. DeBra,³² J. Degallaix,⁵³ M. Degree,³² T. Delker,⁴¹ T. Demma,⁴⁸ V. Dergachev,⁴⁴ S. Desai,³⁴ R. DeSalvo,¹⁵ S. Dhurandhar,¹⁴ M. Díaz,³⁵ J. Dickson,⁴ A. Di Credico,³³ G. Diederichs,³⁸ A. Dietz,⁸ H. Ding,¹⁵ E. E. Doomes,³¹ R. W. P. Drever,⁵ J.-C. Dumas,⁵³ R. J. Dupuis,¹⁵ J. G. Dwyer,¹¹ P. Ehrens,¹⁵ E. Espinoza,¹⁵ T. Etzel,¹⁵ M. Evans,¹⁵ T. Evans,¹⁷ S. Fairhurst,^8,15 Y. Fan,⁵³ D. Fazi,¹⁵ M. M. Fejer,³² L. S. Finn,³⁴ V. Fiumara,⁴⁷ N. Fotopoulos,⁵⁴ A. Franzen,³⁸ K. Y. Franzen,⁴¹ A. Freise,⁴⁰ R. Frey,⁴⁵ T. Fricke,⁴⁶ P. Fritschel,¹⁸ V. V. Frolov,¹⁷ M. Fyffe,¹⁷ V. Galdi,⁴⁸ K. S. Ganezer,⁶ J. Garofoli,¹⁶ I. Gholami,¹ J. A. Giaime,^17,19 S. Giampanis,⁴⁶ K. D. Giardina,¹⁷ K. Goda,¹⁸ E. Goetz,⁴⁴ L. M. Goggin,¹⁵ G. González,¹⁹ S. Gossler,⁴ A. Grant,⁴² S. Gras,⁵³ C. Gray,¹⁶ M. Gray,⁴ J. Greenhalgh,²⁸ A. M. Gretarsson,¹² R. Grosso,³⁵ H. Grote,² S. Grunewald,¹ M. Guenther,¹⁶ R. Gustafson,⁴⁴ B. Hage,³⁸ D. Hammer,⁵⁴ C. Hanna,¹⁹ J. Hanson,¹⁷ J. Harms,² G. Harry,¹⁸ E. Harstad,⁴⁵ T. Hayler,²⁸ J. Heefner,¹⁵ G. Heinzel,² I. S. Heng,⁴² A. Heptonstall,⁴² M. Heurs,² M. Hewitson,² S. Hild,³⁸ E. Hirose,³³ D. Hoak,¹⁷ D. Hosken,³⁹ J. Hough,⁴² E. Howell,⁵³ D. Hoyland,⁴⁰ S. H. Huttner,⁴² D. Ingram,¹⁶ E. Innerhofer,¹⁸ M. Ito,⁴⁵ Y. Itoh,⁵⁴ A. Ivanov,¹⁵ D. Jackrel,³² O. Jennrich,⁴² B. Johnson,¹⁶ W. W. Johnson,¹⁹ W. R. Johnston,³⁵ D. I. Jones,⁵⁰ G. Jones,⁸ R. Jones,⁴² L. Ju,⁵³ P. Kalmus,¹¹ V. Kalogera,²⁶ D. Kasprzyk,⁴⁰ E. Katsavounidis,¹⁸ K. Kawabe,¹⁶ S. Kawamura,²⁵ F. Kawazoe,²⁵ W. Kells,¹⁵ D. G. Keppel,¹⁵ F. Ya. Khalili,²³ C. J. Killow,⁴² C. Kim,²⁶ P. King,¹⁵ J. S. Kissell,¹⁹ S. Klimenko,⁴¹ K. Kokeyama,²⁵ V. Kondrashov,¹⁵ R. K. Kopparapu,¹⁹ D. Kozak,¹⁵ B. Krishnan,¹ P. Kwee,³⁸ P. K. Lam,⁴ M. Landry,¹⁶ B. Lantz,³² A. Lazzarini,¹⁵ B. Lee,⁵³ M. Lei,¹⁵ J. Leiner,⁵⁶ V. Leonhardt,²⁵ I. Leonor,⁴⁵ K. Libbrecht,¹⁵ A. Libson,⁹ P. Lindquist,¹⁵ N. A. Lockerbie,⁵¹ J. Logan,¹⁵ M. Longo,⁴⁷ M. Lormand,¹⁷ M. Lubinski,¹⁶ H. Lück,^38,2 B. Machenschalk,¹ M. MacInnis,¹⁸ M. Mageswaran,¹⁵ K. Mailand,¹⁵ M. Malec,³⁸ V. Mandic,¹⁵ S. Marano,⁴⁷ S. Márka,¹¹ J. Markowitz,¹⁸ E. Maros,¹⁵ I. Martin,⁴² J. N. Marx,¹⁵ K. Mason,¹⁸ L. Matone,¹¹ V. Matta,⁴⁷ N. Mavalvala,¹⁸ R. McCarthy,¹⁶ D. E. McClelland,⁴ S. C. McGuire,³¹ M. McHugh,²¹ K. McKenzie,⁴ J. W. C. McNabb,³⁴ S. McWilliams,²⁴ T. Meier,³⁸ A. Melissinos,⁴⁶ G. Mendell,¹⁶ R. A. Mercer,⁴¹ S. Meshkov,¹⁵ E. Messaritaki,¹⁵ C. J. Messenger,⁴² D. Meyers,¹⁵ E. Mikhailov,¹⁸ S. Mitra,¹⁴ V. P. Mitrofanov,²³ G. Mitselmakher,⁴¹ R. Mittleman,¹⁸ O. Miyakawa,¹⁵ S. Mohanty,³⁵ G. Moreno,¹⁶ K. Mossavi,² C. MowLowry,⁴ A. Moylan,⁴ D. Mudge,³⁹ G. Mueller,⁴¹ S. Mukherjee,³⁵ H. Müller-Ebhardt,² J. Munch,³⁹ P. Murray,⁴² E. Myers,¹⁶ J. Myers,¹⁶ S. Nagano,² T. Nash,¹⁵ G. Newton,⁴² A. Nishizawa,²⁵ F. Nocera,¹⁵ K. Numata,²⁴ P. Nutzman,²⁶ B. O'Reilly,¹⁷ R. O'Shaughnessy,²⁶ D. J. Ottaway,¹⁸ H. Overmier,¹⁷ B. J. Owen,³⁴ Y. Pan,⁴³ M. A. Papa,^1,54 V. Parameshwaraiah,¹⁶ C. Parameswariah,¹⁷ P. Patel,¹⁵ M. Pedraza,¹⁵ S. Penn,¹³ V. Pierro,⁴⁸ I. M. Pinto,⁴⁸ M. Pitkin,⁴² H. Pletsch,² M. V. Plissi,⁴² F. Postiglione,⁴⁷ R. Prix,¹ V. Quetschke,⁴¹ F. Raab,¹⁶ D. Rabeling,⁴ H. Radkins,¹⁶ R. Rahkola,⁴⁵ N. Rainer,² M. Rakhmanov,³⁴ M. Ramsunder,³⁴ K. Rawlins,¹⁸ S. Ray-Majumder,⁵⁴ V. Re,⁴⁰ T. Regimbau,⁸ H. Rehbein,² S. Reid,⁴² D. H. Reitze,⁴¹ L. Ribichini,² S. Richman,¹⁸ R. Riesen,¹⁷ K. Riles,⁴⁴ B. Rivera,¹⁶ N. A. Robertson,^15,42 C. Robinson,⁸ E. L. Robison,⁴⁰ S. Roddy,¹⁷ A. Rodriguez,¹⁹ A. M. Rogan,⁵⁶ J. Rollins,¹¹ J. D. Romano,⁸ J. Romie,¹⁷ H. Rong,⁴¹ R. Route,³² S. Rowan,⁴² A. Rüdiger,² L. Ruet,¹⁸ P. Russell,¹⁵ K. Ryan,¹⁶ S. Sakata,²⁵ M. Samidi,¹⁵ L. Sancho de la Jordana,³⁷ V. Sandberg,¹⁶ G. H. Sanders,¹⁵ V. Sannibale,¹⁵ S. Saraf,²⁷ P. Sarin,¹⁸ B. Sathyaprakash,⁸ S. Sato,²⁵ P. R. Saulson,³³ R. Savage,¹⁶ P. Savov,⁷ A. Sazonov,⁴¹ S. Schediwy,⁵³ R. Schilling,² R. Schnabel,² R. Schofield,⁴⁵ B. F. Schutz,^1,8 P. Schwinberg,¹⁶ S. M. Scott,⁴ A. C. Searle,⁴ B. Sears,¹⁵ F. Seifert,² D. Sellers,¹⁷ A. S. Sengupta,⁸ P. Shawhan,⁴³ D. H. Shoemaker,¹⁸ A. Sibley,¹⁷ J. A. Sidles,⁵² X. Siemens,^15,7 D. Sigg,¹⁶ S. Sinha,³² A. M. Sintes,^37,1 B. J. J. Slagmolen,⁴ J. Slutsky,¹⁹ J. R. Smith,² M. R. Smith,¹⁵ K. Somiya,^2,1 K. A. Strain,⁴² N. E. Strand,³⁴ D. M. Strom,⁴⁵ A. Stuver,³⁴ T. Z. Summerscales,³ K.-X. Sun,³² M. Sung,¹⁹ P. J. Sutton,¹⁵ J. Sylvestre,¹⁵ H. Takahashi,¹ A. Takamori,¹⁵ D. B. Tanner,⁴¹ M. Tarallo,¹⁵ R. Taylor,¹⁵ R. Taylor,⁴² J. Thacker,¹⁷ K. A. Thorne,³⁴ K. S. Thorne,⁷ A. Thüring,³⁸ M. Tinto,⁵ K. V. Tokmakov,⁴² C. Torres,³⁵ C. Torrie,⁴² G. Traylor,¹⁷ M. Trias,³⁷ W. Tyler,¹⁵ D. Ugolini,³⁶ C. Ungarelli,⁴⁰ K. Urbanek,³² H. Vahlbruch,³⁸ M. Vallisneri,⁷ C. Van Den Broeck,⁸ M. van Putten,¹⁸ M. Varvella,¹⁵ S. Vass,¹⁵ A. Vecchio,⁴⁰ J. Veitch,⁴² P. Veitch,³⁹ A. Villar,¹⁵ C. Vorvick,¹⁶ S. P. Vyachanin,²³ S. J. Waldman,¹⁵ L. Wallace,¹⁵ H. Ward,⁴² R. Ward,¹⁵ K. Watts,¹⁷ D. Webber,¹⁵ A. Weidner,² M. Weinert,² A. Weinstein,¹⁵ R. Weiss,¹⁸ L. Wen,¹ S. Wen,¹⁹ K. Wette,⁴ J. T. Whelan,¹ D.. M. Whitbeck,³⁴ S. E. Whitcomb,¹⁵ B. F. Whiting,⁴¹ S. Wiley,⁶ C. Wilkinson,¹⁶ P. A. Willems,¹⁵ L. Williams,⁴¹ B. Willke,^38,2 I. Wilmut,²⁸ W. Winkler,² C. C. Wipf,¹⁸ S. Wise,⁴¹ A. G. Wiseman,⁵⁴ G. Woan,⁴² D. Woods,⁵⁴ R. Wooley,¹⁷ J. Worden,¹⁶ W. Wu,⁴¹ I. Yakushin,¹⁷ H. Yamamoto,¹⁵ Z. Yan,⁵³ S. Yoshida,³⁰ N. Yunes,³⁴ K. D. Zaleski,³⁴ M. Zanolin,¹⁸ J. Zhang,⁴⁴ L. Zhang,¹⁵ C. Zhao,⁵³ N. Zotov,²⁰ M. Zucker,¹⁸ H. zur Mühlen,³⁸ and J. Zweizig¹⁵

(LIGO Scientific Collaboration)

¹Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-14476 Golm, Germany
²Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-30167 Hannover, Germany
³Andrews University, Berrien Springs, Michigan 49104, USA
⁴Australian National University, Canberra, 0200, Australia
⁵California Institute of Technology, Pasadena, California 91125, USA
⁶California State University, Dominguez Hills, Carson, California 90747, USA
⁷Caltech-CaRT, Pasadena, California 91125, USA
⁸Cardiff University, Cardiff, CF2 3YB, United Kingdom
⁹Carleton College, Northfield, Minnesota 55057, USA
¹⁰Charles Sturt University, Wagga Wagga, NSW 2678, Australia
¹¹Columbia University, New York, New York 10027, USA
¹²Embry-Riddle Aeronautical University, Prescott, AZ 86301 USA
¹³Hobart and William Smith Colleges, Geneva, New York 14456, USA
¹⁴Inter-University Centre for Astronomy and Astrophysics, Pune - 411007, India
¹⁵LIGO - California Institute of Technology, Pasadena, California 91125, USA
¹⁶LIGO Hanford Observatory, Richland, Washington 99352, USA
¹⁷LIGO Livingston Observatory, Livingston, Louisiana 70754, USA
¹⁸LIGO - Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
¹⁹Louisiana State University, Baton Rouge, Louisiana 70803, USA
²⁰Louisiana Tech University, Ruston, Louisiana 71272, USA
²¹Loyola University, New Orleans, Louisiana 70118, USA
²²Max Planck Institut für Quantenoptik, D-85748, Garching, Germany
²³Moscow State University, Moscow, 119992, Russia
²⁴NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
²⁵National Astronomical Observatory of Japan, Tokyo 181-8588, Japan
²⁶Northwestern University, Evanston, Illinois 60208, USA
²⁷Rochester Institute of Technology, Rochester, NY 14623, USA
²⁸Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX United Kingdom
²⁹San Jose State University, San Jose, California 95192, USA
³⁰Southeastern Louisiana University, Hammond, Louisiana 70402, USA
³¹Southern University, Baton Rouge, LA 70813, USA and A&M College, Baton Rouge, LA 70813, USA
³²Stanford University, Stanford, California 94305, USA
³³Syracuse University, Syracuse, New York 13244, USA
³⁴The Pennsylvania State University, University Park, Pennsylvania 16802, USA
³⁵The University of Texas at Brownsville, Brownsville, Texas 78520, USA and Texas Southmost College, Brownsville, Texas 78520, USA
³⁶Trinity University, San Antonio, Texas 78212, USA
³⁷Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
³⁸Universität Hannover, D-30167 Hannover, Germany
³⁹University of Adelaide, Adelaide, SA 5005, Australia
⁴⁰University of Birmingham, Birmingham, B15 2TT, United Kingdom
⁴¹University of Florida, Gainesville, Florida 32611, USA
⁴²University of Glasgow, Glasgow, G12 8QQ, United Kingdom
⁴³University of Maryland, College Park, Massachusetts 20742, USA
⁴⁴University of Michigan, Ann Arbor, Michigan 48109, USA
⁴⁵University of Oregon, Eugene, Oregon 97403, USA
⁴⁶University of Rochester, Rochester, New York 14627, USA
⁴⁷University of Salerno, 84084 Fisciano (Salerno), Italy
⁴⁸University of Sannio at Benevento, I-82100 Benevento, Italy
⁴⁹University of Sheffield, Sheffield, S3 7RH, United Kingdom
⁵⁰University of Southampton, Southampton, SO17 1BJ, United Kingdom
⁵¹University of Strathclyde, Glasgow, G1 1XQ, United Kingdom
⁵²University of Washington, Seattle, Washington 98195, USA
⁵³University of Western Australia, Crawley, WA 6009, Australia
⁵⁴University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
⁵⁵Vassar College, Poughkeepsie, New York 12604, USA
⁵⁶Washington State University, Pullman, Washington 99164, USA

We carry out two searches for periodic gravitational waves using the most sensitive few hours of data from the second LIGO science run. Both searches exploit fully coherent matched filtering and cover wide areas of parameter space, an innovation over previous analyses which requires considerable algorithm development and computational power. The first search is targeted at isolated, previously unknown neutron stars, covers the entire sky in the frequency band 160–728.8 Hz, and assumes a frequency derivative of less than 4×10^-10 Hz/s. The second search targets the accreting neutron star in the low-mass x-ray binary Scorpius X-1 and covers the frequency bands 464–484 Hz and 604–624 Hz as well as the two relevant binary orbit parameters. Because of the high computational cost of these searches we limit the analyses to the most sensitive 10 hours and 6 hours of data, respectively. Given the limited sensitivity and duration of the analyzed data set, we do not attempt deep follow-up studies. Rather we concentrate on demonstrating the data analysis method on a real data set and present our results as upper limits over large volumes of the parameter space. In order to achieve this, we look for coincidences in parameter space between the Livingston and Hanford 4-km interferometers. For isolated neutron stars our 95% confidence level upper limits on the gravitational wave strain amplitude range from 6.6×10^-23 to 1×10^-21 across the frequency band; for Scorpius X-1 they range from 1.7×10^-22 to 1.3×10^-21 across the two 20-Hz frequency bands. The upper limits presented in this paper are the first broadband wide parameter space upper limits on periodic gravitational waves from coherent search techniques. The methods developed here lay the foundations for upcoming hierarchical searches of more sensitive data which may detect astrophysical signals.

©2007 The American Physical Society

View Cart	Download Citation
MyScitation	Print View