%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2015/03.04.19.01
%2 sid.inpe.br/mtc-m21b/2015/03.04.19.01.09
%@doi 10.1103/PhysRevD.91.022004
%@issn 1550-2368
%@issn 1550-7998
%T Narrow-band search of continuous gravitational-wave signals from Crab and Vela pulsars in Virgo VSR4 data
%D 2015
%9 journal article
%A Aasi, J.,
%A Abbott, B. P.,
%A Abbott, R.,
%A Abbott, T.,
%A Abernathy, M. R.,
%A Acernese, F.,
%A Ackley, K.,
%A Adams, C.,
%A Adams, T.,
%A Adams, T.,
%A Addesso, P.,
%A Adhikari, R. X.,
%A Adya, V.,
%A Affeldt, C.,
%A Agathos, M.,
%A Agatsuma, K.,
%A Aggarwal, N.,
%A Aguiar, Odylio Denys de,
%A Ain, A.,
%A Ajith, P.,
%A Alemic, A.,
%A Allen, B.,
%A Allocca, A.,
%A Amariutei, D.,
%A Anderson, S. B.,
%A Anderson, W. G.,
%A Arai, K.,
%A Araya, M. C.,
%A Arceneaux, C.,
%A Areeda, J. S.,
%A Ashton, G.,
%A Ast, S.,
%A Aston, S. M.,
%A Astone, P.,
%A Aufmuth, P.,
%A Aulbert, C.,
%A Aylott, B. E.,
%A Babak, S.,
%A Baker, P. T.,
%A Baldaccini, F.,
%A Ballardin, G.,
%A Ballmer, S. W.,
%A Barayoga, J. C.,
%A Barbet, M.,
%A Barclay, S.,
%A Barish, B. C.,
%A Barker, D.,
%A Barone, F.,
%A Barr, B.,
%A Barsotti, L.,
%A Barsuglia, M.,
%A Barlett, J.,
%A Barton, M. A.,
%A Bartos, I.,
%A Bassiri, R.,
%A Basti, A.,
%A Batch, J. C.,
%A Bauer, T. S.,
%A Baune, C.,
%A Bavigadda, V.,
%A Behnke, B.,
%A Bejger, M.,
%A Belczynski, C.,
%A Bell, A. S.,
%A Bell, C.,
%A Benacquista, M.,
%A Bergam, J.,
%A Bergamm, G.,
%A Berry, C. P. L.,
%A Bersanetti, D.,
%A Bertolini, A.,
%A Betzwieser, J.,
%A Bhagwat, S.,
%A Bhandare, R.,
%A Bilenko, I. A.,
%A Billingsley, G.,
%A Birch, J.,
%A Biscans, S.,
%A Bitossi, M.,
%A Biwer, C.,
%A Bizouard, M. A.,
%A Blackburn, J. K.,
%A Blackburn, L.,
%A Blair, C. D.,
%A Blair, D.,
%A Bloemen, S.,
%A Bock, O.,
%A Bodiya, T. P.,
%A Boer, M.,
%A Bogaert, G.,
%A Bojtos, P.,
%A Bond, C.,
%A Bondu, F.,
%A Bonelli, L.,
%A Bonnand, R.,
%A Bork, R.,
%A Born, M.,
%A Boschi, V.,
%A Bose, S.,
%A Bradaschia, C.,
%@affiliation California Institute of Technology
%@affiliation California Institute of Technology
%@affiliation California Institute of Technology
%@affiliation Louisiana State University
%@affiliation California Institute of Technology
%@affiliation Universitá di Salerno
%@affiliation University of Florida
%@affiliation Livingston Observatory
%@affiliation Cardiff University
%@affiliation Université de Savoie
%@affiliation University of Sannio at Benevento
%@affiliation California Institute of Technology
%@affiliation Albert Einstein Institut
%@affiliation Albert Einstein Institut
%@affiliation Nikhef
%@affiliation Nikhef
%@affiliation Massachusetts Institute of Technology
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Inter-University Centre for Astronomy and Astrophysics
%@affiliation International Centre for Theoretical Sciences
%@affiliation Syracuse University
%@affiliation Albert Einstein Institut
%@affiliation Universitá di Siena
%@affiliation University of Florida
%@affiliation California Institute of Technology
%@affiliation University of Wisconsin
%@affiliation California Institute of Technology
%@affiliation California Institute of Technology
%@affiliation University of Mississippi
%@affiliation California State University
%@affiliation University of Southampton
%@affiliation Leibniz Universität Hannover
%@affiliation Livingston Observatory
%@affiliation INFN
%@affiliation Leibniz Universität Hannover
%@affiliation Albert Einstein Institut
%@affiliation University of Birmingham
%@affiliation Albert Einstein Institut
%@affiliation Montana State University
%@affiliation Università di Perugia
%@affiliation European Gravitational Observatory
%@affiliation Syracuse University
%@affiliation California Institute of Technology
%@affiliation University of Florida
%@affiliation University of Glasgow
%@affiliation California Institute of Technology
%@affiliation Handford Observatory
%@affiliation Università di Salerno
%@affiliation Hanford Observatory
%@affiliation Massachusetts Institute of Technology
%@affiliation Universitè Paris
%@affiliation Handford Observatory
%@affiliation Handford Observatory
%@affiliation Columbia University
%@affiliation Standford University
%@affiliation Università di Pisa
%@affiliation Handford Observatory
%@affiliation Nikhef
%@affiliation Albert Einstein Institut
%@affiliation European Gravitationa Observatory
%@affiliation Albert Einstein Institue
%@affiliation CAMK-PAN
%@affiliation Astronomical Observatory Warsaw University
%@affiliation University of Glasgow
%@affiliation University of Glasgow
%@affiliation University of Texas
%@affiliation Hanford Observatory
%@affiliation Albert Einstein Institut
%@affiliation University of Birmingham
%@affiliation Università degli Studi di Genova
%@affiliation Nikhef
%@affiliation Livingston Observatory
%@affiliation Syracuse University
%@affiliation RRCAT
%@affiliation Lomonosov Moscow State University
%@affiliation California Institute of Technology
%@affiliation Livingston Observatory
%@affiliation Massachysetts Institute of Technology
%@affiliation European Gravitational Observatory
%@affiliation Syracuse University
%@affiliation Universitè Paris Sud
%@affiliation California Institute of Technology
%@affiliation NASA
%@affiliation University of Western Australia
%@affiliation University of Western Australia
%@affiliation Nikhef
%@affiliation Albert Einstein Institut
%@affiliation Massachusetts Institute of Technology
%@affiliation Radboud University Nijmegen
%@affiliation Radboud University Nijmegen
%@affiliation MTA
%@affiliation University of Birmingham
%@affiliation Université de Rennes
%@affiliation Universitá di Pisa
%@affiliation Université de Savoie
%@affiliation California Institute of Technology
%@affiliation Albert Einstein Intitut
%@affiliation INFN
%@affiliation Inter-University Centre for Astronomy and Astrophysics
%@affiliation INFN
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress odylio.aguiar@inpe.br
%B Physical Review D
%V 91
%N 2
%K Spin-down limit, wind tori, emission, stars.
%X In this paper we present the results of a coherent narrow-band search for continuous gravitational-wave signals from the Crab and Vela pulsars conducted on Virgo VSR4 data. In order to take into account a possible small mismatch between the gravitational-wave frequency and two times the star rotation frequency, inferred from measurement of the electromagnetic pulse rate, a range of 0.02 Hz around two times the star rotational frequency has been searched for both the pulsars. No evidence for a signal has been found and 95% confidence level upper limits have been computed assuming both that polarization parameters are completely unknown and that they are known with some uncertainty, as derived from x-ray observations of the pulsar wind torii. For Vela the upper limits are comparable to the spin-down limit, computed assuming that all the observed spin-down is due to the emission of gravitational waves. For Crab the upper limits are about a factor of 2 below the spin-down limit, and represent a significant improvement with respect to past analysis. This is the first time the spin-down limit is significantly overcome in a narrow-band search.
%@language en