Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004

TL;DR

This paper reports on the search for gravitational waves from inspiraling compact star binaries using TAMA300 data collected between 2000 and 2004, setting an upper limit on coalescence rates in our Galaxy.

Contribution

First comprehensive analysis of TAMA300 data for inspiraling binary gravitational waves, establishing an upper limit on event rates with systematic error considerations.

Findings

No gravitational wave detections; upper limit of 20 coalescences per year in our Galaxy.

Combined data from multiple observation runs to improve sensitivity.

Systematic errors included in the upper limit estimation.

Abstract

We analyze the data of TAMA300 detector to search for gravitational waves from inspiraling compact star binaries with masses of the component stars in the range 1-3Msolar. In this analysis, 2705 hours of data, taken during the years 2000-2004, are used for the event search. We combine the results of different observation runs, and obtained a single upper limit on the rate of the coalescence of compact binaries in our Galaxy of 20 per year at a 90% confidence level. In this upper limit, the effect of various systematic errors such like the uncertainty of the background estimation and the calibration of the detector's sensitivity are included.