Upper limit map of a background of gravitational waves
| dc.creator | The LIGO Scientific Collaboration | |
| dc.creator | Abbott, B. | |
| dc.date | 2007-03-09 | |
| dc.date.accessioned | 2026-07-07T11:57:32Z | |
| dc.date.available | 2026-07-07T11:57:32Z | |
| dc.description | We searched for an anisotropic background of gravitational waves using data from the LIGO S4 science run and a method that is optimized for point sources. This is appropriate if, for example, the gravitational wave background is dominated by a small number of distinct astrophysical sources. No signal was seen. Upper limit maps were produced assuming two different power laws for the source strain power spectrum. For an f^-3 power law and using the 50 Hz to 1.8 kHz band the upper limits on the source strain power spectrum vary between 1.2e-48 Hz^-1 (100 Hz/f)^3 and 1.2e-47 Hz^-1 (100 Hz /f)^3, depending on the position in the sky. Similarly, in the case of constant strain power spectrum, the upper limits vary between 8.5e-49 Hz^-1 and 6.1e-48 Hz^-1. As a side product a limit on an isotropic background of gravitational waves was also obtained. All limits are at the 90% confidence level. Finally, as an application, we focused on the direction of Sco-X1, the closest low-mass X-ray binary. We compare the upper limit on strain amplitude obtained by this method to expectations based on the X-ray luminosity of Sco-X1. | |
| dc.description | 11 pages, 9 figures, 2 tables | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0703234 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0703234 | |
| dc.identifier | Phys.Rev.D76:082003,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.76.082003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205916 | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Upper limit map of a background of gravitational waves | |
| dc.type | text |