TY - JOUR

T1 - Einstein@Home search for periodic gravitational waves in early S5 LIGO data

AU - LIGO Scientific Collaboration

AU - Pitkin, M.

PY - 2009/8/11

Y1 - 2009/8/11

N2 - This paper reports on an all-sky search for periodic gravitational waves from sources such as deformed isolated rapidly spinning neutron stars. The analysis uses 840 hours of data from 66 days of the fifth LIGO science run (S5). The data were searched for quasimonochromatic waves with frequencies f in the range from 50 to 1500 Hz, with a linear frequency drift ˙f (measured at the solar system barycenter) in the range −f/τ<˙f<0.1f/τ, for a minimum spin-down age τ of 1000 years for signals below 400 Hz and 8000 years above 400 Hz. The main computational work of the search was distributed over approximately 100 000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours while searching a large parameter space. This search extends Einstein@Home’s previous search in LIGO S4 data to about 3 times better sensitivity. No statistically significant signals were found. In the 125–225 Hz band, more than 90% of sources with dimensionless gravitational-wave strain tensor amplitude greater than 3×10−24 would have been detected.

AB - This paper reports on an all-sky search for periodic gravitational waves from sources such as deformed isolated rapidly spinning neutron stars. The analysis uses 840 hours of data from 66 days of the fifth LIGO science run (S5). The data were searched for quasimonochromatic waves with frequencies f in the range from 50 to 1500 Hz, with a linear frequency drift ˙f (measured at the solar system barycenter) in the range −f/τ<˙f<0.1f/τ, for a minimum spin-down age τ of 1000 years for signals below 400 Hz and 8000 years above 400 Hz. The main computational work of the search was distributed over approximately 100 000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours while searching a large parameter space. This search extends Einstein@Home’s previous search in LIGO S4 data to about 3 times better sensitivity. No statistically significant signals were found. In the 125–225 Hz band, more than 90% of sources with dimensionless gravitational-wave strain tensor amplitude greater than 3×10−24 would have been detected.

KW - 04.80.Nn

KW - 95.55.Ym

KW - 97.60.Gb

KW - 07.05.Kf

KW - Gravitational wave detectors and experiments

KW - Gravitational radiation detectors

KW - mass spectrometers

KW - and other instrumentation and techniques

KW - Pulsars

KW - Data analysis: algorithms and implementation

KW - data management

KW - General Relativity and Quantum Cosmology

U2 - 10.1103/PhysRevD.80.042003

DO - 10.1103/PhysRevD.80.042003

M3 - Journal article

VL - 80

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 4

M1 - 042003

ER -