Artículos de revistas
First all-sky search for continuous gravitational waves from unknown sources in binary systems
Fecha
2014-09-15Registro en:
Physical Review D. College Pk: Amer Physical Soc, v. 90, n. 6, 17 p., 2014.
1550-7998
10.1103/PhysRevD.90.062010
WOS:000342142100001
WOS000342142100001.pdf
Autor
CALTECH
Louisiana State Univ
Univ Savoie
Univ Monte S Angelo
Univ Salerno
Univ Florida
LIGO Livingston Observ
Cardiff Univ
Max Planck Inst Gravitat Phys
Nikhef
MIT
Inst Nacl Pesquisas Espaciais
Interuniv Ctr Astron & Astrophys
Tata Inst Fundamental Res
Syracuse Univ
Univ Wisconsin
Leibniz Univ Hannover
Ist Nazl Fis Nucl
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Calif State Univ Fullerton
Univ Birmingham
Montana State Univ
European Gravitat Observ
LIGO Hanford Observ
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Institución
Resumen
We present the first results of an all-sky search for continuous gravitational waves from unknown spinning neutron stars in binary systems using LIGO and Virgo data. Using a specially developed analysis program, the TwoSpect algorithm, the search was carried out on data from the sixth LIGO science run and the second and third Virgo science runs. The search covers a range of frequencies from 20 Hz to 520 Hz, a range of orbital periods from 2 to similar to 2,254 h and a frequency-and period-dependent range of frequency modulation depths from 0.277 to 100 mHz. This corresponds to a range of projected semimajor axes of the orbit from similar to 0.6 x 10(-3) ls to similar to 6,500 ls assuming the orbit of the binary is circular. While no plausible candidate gravitational wave events survive the pipeline, upper limits are set on the analyzed data. The most sensitive 95% confidence upper limit obtained on gravitational wave strain is 2.3 x 10(-24) at 217 Hz, assuming the source waves are circularly polarized. Although this search has been optimized for circular binary orbits, the upper limits obtained remain valid for orbital eccentricities as large as 0.9. In addition, upper limits are placed on continuous gravitational wave emission from the low-mass x-ray binary Scorpius X-1 between 20 Hz and 57.25 Hz.