Directed search for gravitational waves from Scorpius X-1 with initial LIGO data
Creators: name: Aasi, J.
name: Abbott, B.P.
name: Abbott, R.
name: Abbott, T.
name: Abernathy, M.R.
name: Acernese, F.
name: Ackley, K.
name: Adams, C.
name: Adams, T.
name: Addesso, P.
name: Adhikari, R.X.
name: Adya, V.
name: Affeldt, C.
name: Agathos, M.
name: Agatsuma, K.
name: Aggarwal, N.
name: Aguiar, O.D.
name: Ain, A.
name: Ajith, P.
name: Alemic, A.
name: Allen, B.
name: Allocca, A.
name: Amariutei, D.
name: Anderson, S.B.
name: Anderson, W.G.
name: Arai, K.
name: Araya, M.C.
name: Arceneaux, C.
name: Areeda, J.S.
name: Arnaud, N.
name: Ashton, G.
name: Ast, S.
name: Aston, S.M.
name: Astone, P.
name: Aufmuth, P.
name: Aulbert, C.
name: Aylott, B.E.
name: Babak, S.
name: Baker, P.T.
name: Baldaccini, F.
name: Ballardin, G.
name: Ballmer, S.W.
name: Barayoga, J.C.
name: Barbet, M.
name: Barclay, S.
name: Barish, B.C.
name: Barker, D.
name: Barone, F.
name: Barr, B.
name: Barsotti, L.
name: Barsuglia, M.
name: Bartlett, J.
name: Barton, M.A.
name: Bartos, I.
name: Bassiri, R.
name: Basti, A.
name: Batch, J.C.
name: Bauer, Th.S.
name: Baune, C.
name: Bavigadda, V.
name: Behnke, B.
name: Bejger, M.
name: Belczynski, C.
name: Bell, A.S.
name: Bell, C.
name: Benacquista, M.
name: Bergman, J.
name: Bergmann, G.
name: Berry, C.P.L.
name: Bersanetti, D.
name: Bertolini, A.
name: Betzwieser, J.
name: Bhagwat, S.
name: Bhandare, R.
name: Bilenko, I.A.
name: Billingsley, G.
name: Birch, J.
name: Biscans, S.
name: Bitossi, M.
name: Biwer, C.
name: Bizouard, M.A.
name: Blackburn, J.K.
name: Blackburn, L.
name: Blair, C.D.
name: Blair, D.
name: Bloemen, S.
name: Bock, O.
name: Bodiya, T.P.
name: Boer, M.
name: Bogaert, G.
name: Bojtos, P.
name: Bond, C.
name: Bondu, F.
name: Bonelli, L.
name: Bonnand, R.
name: Bork, R.
name: Born, M.
name: Boschi, V.
name: Bose, Sukanta
name: Bradaschia, C.
name: Brady, P.R.
name: Braginsky, V.B.
name: Branchesi, M.
name: Brau, J.E.
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name: Bridges, D.O.
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name: Van Heijningen, J.
name: Van Veggel, A.A.
name: Vass, S.
name: Vasúth, M.
name: Vaulin, R.
name: Vecchio, A.
name: Vedovato, G.
name: Veitch, J.
name: Veitch, J.
name: Veitch, P.J.
name: Venkateswara, K.
name: Verkindt, D.
name: Vetrano, F.
name: Viceré, A.
name: Vincent-Finley, R.
name: Vinet, J.-Y.
name: Vitale, S.
name: Vo, T.
name: Vocca, H.
name: Vorvick, C.
name: Vousden, W.D.
name: Vyatchanin, S.P.
name: Wade, A.R.
name: Wade, L.
name: Wade, M.
name: Walker, M.
name: Wallace, L.
name: Walsh, S.
name: Wang, H.
name: Wang, M.
name: Wang, X.
name: Ward, R.L.
name: Warner, J.
name: Was, M.
name: Was, M.
name: Weaver, B.
name: Wei, L.-W.
name: Weinert, M.
name: Weinstein, A.J.
name: Weiss, R.
name: Welborn, T.
name: Wen, L.
name: Wessels, P.
name: Westphal, T.
name: Wette, K.
name: Whelan, J.T.
name: White, D.J.
name: Whiting, B.F.
name: Wilkinson, C.
name: Williams, L.
name: Williams, R.
name: Williamson, A.R.
name: Willis, J.L.
name: Willke, B.
name: Wimmer, M.
name: Winkler, W.
name: Wipf, C.C.
name: Wittel, H.
name: Woan, G.
name: Worden, J.
name: Xie, S.
name: Yablon, J.
name: Yakushin, I.
name: Yam, W.
name: Yamamoto, H.
name: Yancey, C.C.
name: Yang, Q.
name: Yvert, M.
name: Zadrożny, A.
name: Zanolin, M.
name: Zendri, J.-P.
name: Zhang, Fan
name: Zhang, L.
name: Zhang, M.
name: Zhang, Y.
name: Zhao, C.
name: Zhou, M.
name: Zhu, X.J.
name: Zucker, M.E.
name: Zuraw, S.
name: Zweizig, J.
Publisher: name: College Park, MD : American Physical Society
Year: 2015
Subjects: subject: magnetically confined mountain
subject: maximum spin frequency
subject: neutron-stars
subject: radiation
subject: emission
subject: pulsars
subject: period
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We present results of a search for continuously emitted gravitational radiation, directed at the brightest low-mass x-ray binary, Scorpius X-1. Our semicoherent analysis covers 10 days of LIGO S5 data ranging from 50-550 Hz, and performs an incoherent sum of coherent F-statistic power distributed amongst frequency-modulated orbital sidebands. All candidates not removed at the veto stage were found to be consistent with noise at a 1% false alarm rate. We present Bayesian 95% confidence upper limits on gravitational-wave strain amplitude using two different prior distributions: a standard one, with no a priori assumptions about the orientation of Scorpius X-1; and an angle-restricted one, using a prior derived from electromagnetic observations. Median strain upper limits of 1.3×10-24 and 8×10-25 are reported at 150 Hz for the standard and angle-restricted searches respectively. This proof-of-principle analysis was limited to a short observation time by unknown effects of accretion on the intrinsic spin frequency of the neutron star, but improves upon previous upper limits by factors of ∼1.4 for the standard, and 2.3 for the angle-restricted search at the sensitive region of the detector. © 2015 American Physical Society.