Artículos de revistas
Search of the Orion spur for continuous gravitational waves using a loosely coherent algorithm on data from LIGO interferometers
Fecha
2016-02-17Registro en:
Physical Review D. College Pk: Amer Physical Soc, v. 93, n. 4, 14 p., 2016.
2470-0010
10.1103/PhysRevD.93.042006
WOS:000370247800001
WOS000370247800001.pdf
Autor
LIGO Calif Inst Technol
Louisiana State Univ
Univ Salerno
Complesso Univ Monte S Angelo
Univ Florida
LIGO Livingston Observ
Cardiff Univ
Univ Savoie Mt Blanc
Univ Sannio Benevento
Ist Nazl Fis Nucl
Max Planck Inst Gravitat Phys
NIKHEF H
LIGO Massachusetts Inst Technol
Inst Nacl Pesquisas Espaciais
Interuniv Ctr Astron & Astrophys
Tata Inst Fundamental Res
Univ Wisconsin
Leibniz Univ Hannover
Univ Siena
Stanford Univ
Univ Mississippi
Calif State Univ Fullerton
Univ Paris 11
Univ Southampton
Montana State Univ
Univ Perugia
EGO
Syracuse Univ
Univ Glasgow
LIGO Hanford Observ
Universidade de São Paulo (USP)
Columbia Univ
Univ Pisa
CAMK PAN
Warsaw Univ
Univ Birmingham
Univ Genoa
RRCAT
Moscow MV Lomonosov State Univ
Univ West Scotland
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
Embry Riddle Aeronaut Univ
Univ Oregon
ENS PSL Res Univ
Vrije Univ Amsterdam
Univ Maryland
Georgia Inst Technol
Univ Lyon
Univ Illes Balears IEEC
Univ Naples Federico II
NASA
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Tsinghua Univ
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Univ Roma Tor Vergata
Natl Tsing Hua Univ
Charles Sturt Univ
Caltech CaRT
Pusan Natl Univ
Australian Natl Univ
Carleton Coll
Univ Roma La Sapienza
Univ Brussels
Texas Tech Univ
Univ Minnesota
Univ Melbourne
Univ Texas Brownsville
Univ Sheffield
RMKI
Montclair State Univ
Argentinian Gravitat Wave Grp
Univ Trent
Penn State Univ
Univ Chicago
Univ Cambridge
Univ Szeged
Inst Plasma Res
Amer Univ
Univ Massachusetts
Univ Adelaide
W Virginia Univ
Korea Inst Sci & Technol Informat
Univ Bialystok
Univ Strathclyde
IISER TVM
Northwestern Univ
Inst Appl Phys
Hanyang Univ
NCBJ
IM PAN
Monash Univ
Seoul Natl Univ
CNRS
Univ Camerino
Southern Univ
A&M Coll
Coll William & Mary
Universidade Estadual Paulista (Unesp)
IISER Kolkata
HSIC
Whitman Coll
Nat Inst Math Sci
Rochester Inst Technol
Hobart & William Smith Coll
Astron Inst
Andrews Univ
Trinity Univ
Univ Padua
Univ Washington
Abilene Christian Univ
Emory Univ
Institución
Resumen
We report results of a wideband search for periodic gravitational waves from isolated neutron stars within the Orion spur towards both the inner and outer regions of our Galaxy. As gravitational waves interact very weakly with matter, the search is unimpeded by dust and concentrations of stars. One search disk (A) is 6.87 degrees in diameter and centered on 20(h)10(m)54.71(s) + 33 degrees 33'25.29 '', and the other (B) is 7.45 degrees in diameter and centered on 8(h)35(m)20.61(s) - 46 degrees 49'25.151 ''. We explored the frequency range of 50-1500 Hz and frequency derivative from 0 to -5 x 10(-9) Hz/s. A multistage, loosely coherent search program allowed probing more deeply than before in these two regions, while increasing coherence length with every stage. Rigorous follow-up parameters have winnowed the initial coincidence set to only 70 candidates, to be examined manually. None of those 70 candidates proved to be consistent with an isolated gravitational-wave emitter, and 95% confidence level upper limits were placed on continuous-wave strain amplitudes. Near 169 Hz we achieve our lowest 95% C.L. upper limit on the worst-case linearly polarized strain amplitude h(0) of 6.3 x 10(-25), while at the high end of our frequency range we achieve a worst-case upper limit of 3.4 x 10(-24) for all polarizations and sky locations.