The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2 - 20 x 10(-50) strain(2) Hz(-1) and 5 - 35 x 10(-49) strain(2) Hz(-1) sr(-1) for pointlike and extended sources, respectively. The latter result is the first of its kind. We also set 90% C.L. limits on the narrow-band root-mean-square GW strain from interesting targets including Sco X-1, SN 1987A and the Galactic center as low as approximate to 7 - 10(-25) in the most sensitive frequency range near 160 Hz.

Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data / Abadie, J., Abbott, B., Abbott, R., Abernathy, M., Accadia, T., Acernese, F., Adams, C., Adhikari, R., Ajith, P., Allen, B., Allen, G., Amador Ceron, E., Amin, R., Anderson, S., Anderson, W., Antonucci, F., Arain, M., Araya, M., Aronsson, M., Arun, K., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 107:27(2011). [10.1103/physrevlett.107.271102]

Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data

COLLA, ALBERTO;I. Di Palma;M. Drago;FRASCA, Sergio;E. Majorana;RAPAGNANI, Piero;RICCI, Fulvio;F. Salemi;
2011

Abstract

The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2 - 20 x 10(-50) strain(2) Hz(-1) and 5 - 35 x 10(-49) strain(2) Hz(-1) sr(-1) for pointlike and extended sources, respectively. The latter result is the first of its kind. We also set 90% C.L. limits on the narrow-band root-mean-square GW strain from interesting targets including Sco X-1, SN 1987A and the Galactic center as low as approximate to 7 - 10(-25) in the most sensitive frequency range near 160 Hz.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Directional Limits on Persistent Gravitational Waves Using LIGO S5 Science Data / Abadie, J., Abbott, B., Abbott, R., Abernathy, M., Accadia, T., Acernese, F., Adams, C., Adhikari, R., Ajith, P., Allen, B., Allen, G., Amador Ceron, E., Amin, R., Anderson, S., Anderson, W., Antonucci, F., Arain, M., Araya, M., Aronsson, M., Arun, K., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 107:27(2011). [10.1103/physrevlett.107.271102]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/455880
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