Searches for periodic gravitational waves from unknown isolated sources and Scorpius X-1: Results from the second LIGO science run

  title={Searches for periodic gravitational waves from unknown isolated sources and Scorpius X-1: Results from the second LIGO science run},
  author={B. P. Abbott and Richard J. Abbott and Rana X. Adhikari and Juri Agresti and Parameswaran Ajith and Bruce Allen and Rupal S. Amin and Stuart B. Anderson and Warren G. Anderson and M. A. Arain and M. C. Araya and Helena Armandula and Michael C. B. Ashley and Stuart M. Aston and Peter Aufmuth and C. Aulbert and Stanislav Babak and Stefan W. Ballmer and Hans Bantilan and Barry C. Barish and C. Barker and Daniel H. N. Barker and Bryan W Barr and Pablo Jos{\'e} Barriga and Mark Andrew Barton and K. Bayer and Krzysztof Belczynski and Steven J. Berukoff and J Betzwieser and P. T. Beyersdorf and Biplab Bhawal and I. A. Bilenko and G Billingsley and Rahul Biswas and Eric D. Black and Kent Blackburn and Lindy L. Blackburn and B. Blair and B. Bland and Johanna Bogenstahl and Lauren Bogue and R. G. Bork and Valerio Boschi and Suvadeep Bose and Patrick R. Brady and Vladimir B. Braginsky and James E. Brau and Martin Brinkmann and Aidan F. Brooks and Duncan A. Brown and Amber L. Bullington and Alexander Bunkowski and Alessandra Buonanno and Oliver Burmeister and Daniel Busby and William Elliott Butler and Robert L. Byer and Laura Cadonati and Gianpietro Cagnoli and Jordan B. Camp and John K. Cannizzo and K. C. Cannon and Caroline Cantley and Junwei Cao and L. Cardenas and K. Carter and Morag M. Casey and Giuseppe Castaldi and Carlos Cepeda and E. Chalkey and P R Charlton and Shourov Chatterji and Simon Chelkowski and Yi Chen and Francesco Chiadini and David Chin and E. Chin and Jong H. Chow and Nelson Christensen and J A Clark and P. Cochrane and Thomas Cokelaer and Carlo Nicola Colacino and Robert Lynn Coldwell and Mark Wayne Coles and Roberto Conte and D. Cook and Thomas R. Corbitt and D. M. Coward and D. C. Coyne and Jolien D. E. Creighton and Teviet Creighton and Rocco P. Croce and David Crooks and A. M. Cruise and Peter Csatorday and Andrew Cumming and Curt Cutler and J. Dalrymple and Erika D'ambrosio and Karsten Danzmann and G. S. Cabourn Davies and E J Daw and Daniel B. DeBra and J{\'e}r{\^o}me Degallaix and Masters Degree and T. Delker and Theo Demma and Vladimir Dergachev and Shantanu Desai and Riccardo DeSalvo and Sanjeev V. Dhurandhar and Mario C. D{\'i}az and Jeffrey Dickson and Alessandra Di Credico and Gustavo R. Diederichs and Alexander Dietz and H. L. Ding and E. E. Doomes and Ronald W. P. Drever and J-C. Dumas and R'ejean J. Dupuis and John G. Dwyer and Phil Ehrens and E. Espinoza and Taylor M. Etzel and Matthew Evans and Tom P. Evans and Stephen Fairhurst and Yaohui Fan and Diego Fazi and Martin M. Fejer and Lee Samuel Finn and Vincenzo Fiumara and Nickolas V Fotopoulos and Alexander Franzen and Ken Yoshiki Franz{\'e}n and Andreas Freise and Raymond E. Frey and T. T. Fricke and P. Fritschel and Valera Frolov and Matthew Fyffe and Vincenzo Galdi and Kenneth Samuel Ganezer and J A Garofoli and Iraj Gholami and J. A. Giaime and Stefanos Giampanis and Krystal Giardina and Keisuke Goda and Evan Goetz and Lisa M. Goggin and Gabriela Gonz{\'a}lez and Stefan Gossler and A. Grant and Slawomir Gras and C. Gray and Malcolm B. Gray and Justin Greenhalgh and A M Gretarsson and Ryan Grosso and Hartmut Grote and S. Grunewald and Mathias Guenther and Richard Gustafson and Boris Hage and David Hammer and Chad Hanna and James E. Hanson and Jan Harms and Gregory M. Harry and Elizabeth Harstad and T. Hayler and J. W. Heefner and Gerhard Heinzel and Ik Siong Heng and A. W. Heptonstall and Mich{\`e}le Heurs and Martin Hewitson and Stefan Hild and Eiichi Hirose and David C. Hoak and D. J. Hosken and James Hough and E J Howell and David Hoyland and S. H. Huttner and D. R. Ingram and Edith Innerhofer and M. Ito and Yousuke Itoh and Anton B. Ivanov and David B. Jackrel and Oliver Jennrich and Ben Johnson and W. W. Johnson and Wm. Robert Johnston and David Jones and Gareth Wyn Jones and Russell Jones and Li Ju and Peter Kalmus and Vassiliki Kalogera and Danuta Kasprzyk and Erotokritos Katsavounidis and Keita Kawabe and Seiji Kawamura and Fumiko Kawazoe and William P. Kells and D. G. Keppel and F. Ya. Khalili and Christian J. Killow and Chunglee Kim and P. J. King and Joe Kissell and Sergey Klimenko and Keiko Kokeyama and V. T. Kondrashov and Ravi kumar Kopparapu and Darby Kozak and Badri Krishnan and Patrick Kwee and Ping Koy Lam and Michael Landry and Brian Lantz and Albert Lazzarini and B. Lee and Ming Lei and Jonathan C. Leiner and Volker Leonhardt and Isabel B. Leonor and Kenneth George Libbrecht and Adam A. Libson and P. E. Lindquist and N. A. Lockerbie and Jennifer E. Logan and Maurizio Longo and Marc Lormand and M. J. Lubinski and Harald L{\"u}ck and B. Machenschalk and Myron Macinnis and M. Mageswaran and K. Mailand and Michaela Malec and Vuk Mandic and Stefano Maran{\`o} and Szabolcs M{\'a}rka and Jared John Markowitz and Edward Maros and Iain W. Martin and J. N. Marx and Kenneth R Mason and Luca Matone and Vincenzo Matta and Nergis Mavalvala and R. McCarthy and D. E. McClelland and Scott C. McGuire and Martin P. McHugh and Kirk McKenzie and J. W. C. McNabb and Sean T. McWilliams and Torsten Meier and A. C. Melissinos and Greg Mendell and Richard A J Mercer and Sydney Meshkov and Eirini Messaritaki and Chris Messenger and David Meyers and Eugeniy Mikhailov and Subhasish Mitra and Vp. Mitrofanov and Gena Mitselmakher and Richard K Mittleman and Osamu Miyakawa and Soumya D. Mohanty and Gerardo Moreno and Kasem Mossavi and Conor M Mow-Lowry and Andrew J. Moylan and Damien Mudge and Guido Mueller and Soma Mukherjee and Helge M{\"u}ller-Ebhardt and Jesper Munch and P. G. Murray and E. Myers and Joshua Myers and Shigeo Nagano and Thomas Nash and G. P. Newton and Atsushi J. Nishizawa and F. Nocera and Kenji Numata and Philip Andrew Nutzman and Brian O'reilly and Richard O’Shaughnessy and David J. Ottaway and Harry Overmier and B. J. Owen and Yi Pan and Maria Alessandra Papa and V. Parameshwaraiah and Chethan Parameswariah and P. Patel and M. Pedraza and Steven D. Penn and Vincenzo Pierro and Innocenzo M. Pinto and Matthew Pitkin and H. J. Pletsch and M. V. Plissi and Fabio Postiglione and Reinhard Prix and Volker Quetschke and F. J. Raab and D. S. Rabeling and Hugh Radkins and Rauha Rahkola and N. Rainer and Malik Rakhmanov and M. Ramsunder and Katherine Rawlins and S. Ray-Majumder and Virginia Re and Tania Regimbau and Henning Rehbein and Stuart Reid and David Reitze and Luciano Ribichini and S. J. Richman and R. Riesen and Keith Riles and B. Rivera and Norna A. Robertson and C. A. K. Robinson and Emily Robison and Shaun Roddy and A. C. Rodriguez and Aaron Rogan and Jameson Graef Rollins and Joseph D. Romano and J. H. Romie and Haisheng Rong and Roger K. Route and Sheila Rowan and A. O. R{\"u}diger and Laurent Ruet and Pamela J. Russell and Kris Ryan and Shihori Sakata and Michael Samidi and Ls de la Jordana and V. D. Sandberg and G. H. Sanders and Virginio Sannibale and Siddhant Saraf and Pradeep Sarin and Bangalore Sathyaprakash and Shuichi Sato and Peter Saulson and Richard L. Savage and Pavlin Savov and A. A. Sazonov and Sascha. W. Schediwy and Roland Schilling and Roman Schnabel and Robert M. S. Schofield and Bernard F. Schutz and P. B. Schwinberg and Susan M. Scott and Antony C. Searle and B. Sears and Frank Seifert and Danny Sellers and Anand S. Sengupta and Peter Shawhan and D. H. Shoemaker and Anna Sibley and John A. Sidles and Xavier Siemens and Daniel Sigg and Supriyo Sinha and A. M. Sintes and Bram J. J. Slagmolen and Jonathan. Slutsky and J. R. Smith and Mathew R. Smith and Kentaro Somiya and Kenneth Strain and Natalie E. Strand and D. Strom and Al. Stuver and Tiffany Summerscales and K-X Sun and Myungkee Sung and P. Sutton and Julien Sylvestre and Hirotaka Takahashi and Akiteru Takamori and David B. Tanner and Marco G. Tarallo and Robert J. Taylor and J. Thacker and Keith A. Thorne and Kip S. Thorne and Andr{\'e} Th{\"u}ring and Massimo Tinto and K. Tokmakov and Cristina Torres and Calum I. Torrie and Gary Traylor and Miquel Trias and William Tyler and Dennis Wayne Ugolini and Carlo Ungarelli and Karel E. Urbanek and Henning Vahlbruch and Michele Vallisneri and Chris van den Broeck and Maurice H. P. M. van Putten and Monica Varvella and Steve Vass and Alberto Vecchio and John Veitch and Peter J. Veitch and Akira E. Villar and Cheryl Vorvick and S. P. Vyachanin and S. J. Waldman and L. Wallace and H. Ward and Robert L. Ward and Kevin Watts and D. K. Webber and Andreas Weidner and Michael Weinert and Alan J. Weinstein and Rainer Weiss and Linqing Wen and S. Wen and Karl Wette and John T. Whelan and D. M. Whitbeck and S. E. Whitcomb and B. F. Whiting and Sandra E. Wiley and Clive R. Wilkinson and Phil A. Willems and L. Williams and Benno Willke and Ian Wilmut and Walter Winkler and Christopher C. Wipf and Stacy M. Wise and A. G. Wiseman and Graham Woan and Daniel J. Woods and R. Wooley and John R. Worden and W W Wu and Igor Yakushin and H. Yamamoto and Zewu Yan and Sanichiro Yoshida and Nicol{\'a}s Yunes and Kristina D. Zaleski and Michele Zanolin and J. Zhang and L. Zhang and Chunnong Zhao and Natalia V. Zotov and Michael Edward Zucker and Hermynia zur M{\"u}hlen and J. G. Zweizig},
  journal={Physical Review D},
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… 
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