Searching for quasi-periodic gravitational waves from low mass x-ray binaries with AURIGA

Abstract

Astrophysical models indicate that low mass x-ray binaries (LMXBs) are very promising as sources of continuous, quasi-periodic gravitational waves at high frequencies, such as those at which resonant bar detectors are operating. In this preliminary paper we quickly derive the expected amplitude of the gravitational wave signals. We show that it is likely that there may be some objects emitting in the AURIGA band. We are producing a database of possible sources and identifying the most promising ones. Our preliminary result indicates that we can achieve a good sensitivity with an observation time of about 10 days thanks to the improved sensitivity of the upgraded AURIGA detector. We also show what will be possible to perform with the advanced resonant detectors (DUAL). Finally, we briefly outline the general features of the analysis method we intend to apply postponing to a future paper the detailed discussion.