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FIRST SEARCH FOR GRAVITATIONAL WAVES FROM THE YOUNGEST KNOWN NEUTRON STAR
- Source :
- arXiv, Astrophysical Journal, 722(2), 1504-1513. IOP Publishing Ltd., Astrophysical Journal
- Publication Year :
- 2010
-
Abstract
- We present a search for periodic gravitational waves from the neutron star in the supernova remnant Cassiopeia A. The search coherently analyzes data in a 12-day interval taken from the fifth science run of the Laser Interferometer Gravitational-Wave Observatory. It searches gravitational wave frequencies from 100 to 300 Hz, and covers a wide range of first and second frequency derivatives appropriate for the age of the remnant and for different spin-down mechanisms. No gravitational wave signal was detected. Within the range of search frequencies, we set 95% confidence upper limits of 0.7--1.2e-24 on the intrinsic gravitational wave strain, 0.4--4e-4 on the equatorial ellipticity of the neutron star, and 0.005--0.14 on the amplitude of r-mode oscillations of the neutron star. These direct upper limits beat indirect limits derived from energy conservation and enter the range of theoretical predictions involving crystalline exotic matter or runaway r-modes. This is the first gravitational wave search to present upper limits on r-modes.<br />26 pages, 5 figures
- Subjects :
- Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Beat (acoustics)
General Relativity and Quantum Cosmology (gr-qc)
Astrophysics
General Relativity and Quantum Cosmology
stars: neutron
COMPACT CENTRAL OBJECT
Observatory
RAY POINT-SOURCE
supernovae: individual (Cassiopeia A)
Supernova remnant
QC
Astrophysics::Galaxy Astrophysics
QB
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Gravitational wave
Exotic matter
INFRARED ECHOES
CONSTRAINTS
Astronomy and Astrophysics
Neutron star
Interferometry
BRAKING INDEX
Amplitude
gravitational waves
SATURATION
Space and Planetary Science
SPIN-DOWN
REMNANT
Astrophysics - High Energy Astrophysical Phenomena
CASSIOPEIA-A SUPERNOVA
EMISSION
Subjects
Details
- ISSN :
- 0004637X and 15384357
- Database :
- OpenAIRE
- Journal :
- arXiv, Astrophysical Journal, 722(2), 1504-1513. IOP Publishing Ltd., Astrophysical Journal
- Accession number :
- edsair.doi.dedup.....f60f3ffc138d59a51d7ebe1d500199c8