2013/09/27 by The LIGO Scientific Collaboration, The Virgo Collaboration, J. Aasi +883 · 6 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Aerospace engineering #Amplitude #Astronomy #Astrophysics #Center (category theory) #Galactic Center #Geophysics and Sensor Technology #Gravitational wave #Gravitational-wave astronomy #Gravitational-wave observatory #LIGO #Neutron star #Optics #Physics #Pulsars and Gravitational Waves Research #Range (aeronautics) #Seismic Waves and Analysis #Stars #astro-ph.HE #gr-qc
paper · pdf · doi:10.1103/physrevd.88.102002
published as Phys. Rev. D 88, 102002 (2013) · 12 pages, 3 figures, 1 table; PDFLaTeX; to be published in Phys.Rev.D; a science summary can be found at http://www.ligo.org/science/Publication-GCSearch/index.php
arxiv created 2013/09/27 · openalex publication_date 2013/11/18 · arxiv updated 2013/11/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We present the results of a directed search for continuous gravitational waves from unknown, isolated neutron stars in the Galactic center region, performed on two years of data from LIGO's fifth science run from two LIGO detectors. The search uses a semicoherent approach, analyzing coherently 630 segments, each spanning 11.5 hours, and then incoherently combining the results of the single segments. It covers gravitational wave frequencies in a range from 78 to 496 Hz and a frequency-dependent range of first-order spindown values down to \ensuremath-7.86\ifmmode×\else\texttimes\fi10^\ensuremath-8 Hz/s at the highest frequency. No gravitational waves were detected. The 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic center are \ensuremath∼3.35\ifmmode×\else\texttimes\fi10^\ensuremath-25 for frequencies near 150 Hz. These upper limits are the most constraining to date for a large-parameter-space search for continuous gravitational wave signals.