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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/128983
Title: 
Directed search for gravitational waves from Scorpius X-1 with initial LIGO data
Author(s): 
Institution: 
  • CALTECH
  • Louisiana State Univ
  • Univ Salerno
  • Ist Nazl Fis Nucl
  • Univ Florida
  • LIGO Livingston Observ
  • Cardiff Univ
  • Univ Savoie
  • Univ Sannio Benevento
  • Max Planck Inst Gravitat Phys
  • Nikhef
  • MIT
  • Inst Nacl Pesquisas Espaciais
  • Inter Univ Ctr Astron &Astrophys
  • Tata Inst Fundamental Res
  • Syracuse Univ
  • Univ Wisconsin
  • Univ Siena
  • Univ Mississippi
  • Calif State Univ Fullerton
  • Univ Paris 11
  • Univ Southampton
  • Leibniz Univ Hannover
  • Univ Birmingham
  • Montana State Univ
  • Univ Perugia
  • European Gravitat Observ
  • Univ Glasgow
  • LIGO Hanford Observ
  • Univ Paris Diderot
  • Columbia Univ
  • Stanford Univ
  • Univ Pisa
  • CAMK PAN
  • Warsaw Univ
  • Univ Texas Brownsville
  • Univ Genoa
  • RRCAT
  • Moscow MV Lomonosov State Univ
  • NASA
  • Univ Western Australia
  • Radboud Univ Nijmegen
  • Univ Nice Sophia Antipolis
  • Observ Cote Azur
  • MTA Eotvos Univ
  • Univ Rennes 1
  • Washington State Univ
  • Univ Urbino Carlo Bo
  • Univ Oregon
  • Univ Paris 06
  • Vrije Univ Amsterdam
  • Univ Maryland
  • Univ Massachusetts
  • Univ Lyon
  • Univ Illes Balears
  • Univ Naples Federico II
  • Univ Toronto
  • Tsinghua Univ
  • Univ Michigan
  • Natl Tsing Hua Univ
  • Charles Sturt Univ
  • Caltech CaRT
  • Pusan Natl Univ
  • Australian Natl Univ
  • Carleton Coll
  • Univ Roma Tor Vergata
  • Univ Roma La Sapienza
  • Univ Brussels
  • Sonoma State Univ
  • Texas Tech Univ
  • Univ Minnesota
  • Univ Sheffield
  • RMKI
  • Montclair State Univ
  • Argentinian Gravitat Wave Grp
  • Univ Trento
  • Northwestern Univ
  • Univ Cambridge
  • Univ Szeged
  • Rutherford Appleton Lab
  • Embry Riddle Aeronaut Univ
  • Penn State Univ
  • Amer Univ
  • Univ Adelaide
  • W Virginia Univ
  • Raman Res Inst
  • Korea Inst Sci &Technol Informat
  • Univ Bialystok
  • Univ Strathclyde
  • IISER TVM
  • Inst Appl Phys
  • Seoul Natl Univ
  • Hanyang Univ
  • NCBJ
  • IM PAN
  • Inst Plasma Res
  • Univ Melbourne
  • Monash Univ
  • CNRS
  • Univ Camerino
  • Southern Univ
  • A&M Coll
  • Coll William &Mary
  • Abilene Christian Univ
  • Universidade Estadual Paulista (UNESP)
  • IISER Kolkata
  • Whitman Coll
  • Natl Inst Math Sci
  • Rochester Inst Technol
  • Hobart &William Smith Coll
  • Univ West Scotland
  • Inst Astron
  • Univ Hamburg
  • Indian Inst Technol
  • Andrews Univ
  • Trinity Univ
  • Univ Washington
ISSN: 
1550-7998
Sponsorship: 
  • United States National Science Foundation (NSF)
  • Science and Technology Facilities Council (STFC) of the United Kingdom
  • Max-Planck-Society (MPS)
  • State of Niedersachsen/Germany
  • EGO consortium
  • Australian Research Council
  • International Science Linkages program of the Commonwealth of Australia
  • Council of Scientific and Industrial Research of India, Department of Science and Technology, India, Science &Engineering Research Board (SERB), India
  • Ministry of Human Resource Development, India
  • Spanish Ministerio de Economia y Competitividad
  • Conselleria d'Economia i Competitivitat and Conselleria d'Educacio, Cultura i Universitats of the Govern de les Illes Balears
  • Foundation for Fundamental Research on Matter - Netherlands Organisation for Scientific Research
  • Polish Ministry of Science and Higher Education
  • FOCUS Programme of Foundation for Polish Science
  • European Union
  • Royal Society
  • Scottish Funding Council
  • Scottish Universities Physics Alliance
  • National Aeronautics and Space Administration
  • Hungarian Scientific Research Fund (OTKA)
  • Lyon Institute of Origins (LIO)
  • National Research Foundation of Korea
  • Industry Canada
  • Province of Ontario through the Ministry of Economic Development and Innovation
  • National Science and Engineering Research Council Canada
  • Brazilian Ministry of Science, Technology, and Innovation
  • Carnegie Trust
  • Leverhulme Trust
  • David and Lucile Packard Foundation
  • Research Corporation
  • Alfred P. Sloan Foundation
Sponsorship Process Number: 
  • Australian Research Council
  • International Science Linkages
  • Council of Scientific and Industrial Research of India
  • Department of Science and Technology, India
  • Science & Engineering Research Board (SERB), India
  • Ministry of Human Resource Development, India
  • Spanish Ministerio de Economía y Competitividad
  • Conselleria d’Economia i Competitivitat
  • Conselleria d’Educació, Cultura i Universitats of the Govern de les Illes Balears
  • Foundation for Fundamental Research on Matter supported
  • Netherlands Organisation for Scientific Research
  • Polish Ministry of Science and Higher Education
  • FOCUS Programme of Foundation for Polish Science
  • European Union
  • Royal Society
  • Scottish Funding Council
  • Scottish Universities Physics Alliance
  • National Aeronautics and Space Administration
  • Hungarian Scientific Research Fund (OTKA)
  • Lyon Institute of Origins (LIO)
  • National Research Foundation of Korea, Industry Canada and the Province of Ontario through
  • Ministry of Economic Development and Innovation
  • National Science and Engineering Research Council Canada
  • Brazilian Ministry of Science, Technology, and Innovation
  • Carnegie Trust
  • Leverhulme Trust
  • David and Lucile Packard Foundation
  • Research Corporation
  • Alfred P. Sloan Foundation
  • NSF
  • STFC
  • MPS
  • INFN
  • CNRS
  • State of Niedersachsen/Germany
Abstract: 
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 x 10(-24) and 8 x 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 similar to 1.4 for the standard, and 2.3 for the angle-restricted search at the sensitive region of the detector.
Issue Date: 
26-Mar-2015
Citation: 
Physical Review D, v. 91, n. 6, p. 1-20, 2015.
Time Duration: 
1-20
Publisher: 
Amer Physical Soc
Source: 
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.062008
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/128983
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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