Parameter Estimation for Galactic Binaries by the Laser Interferometer Space Antenna

Abstract

We calculate how accurately parameters of the short-period binaries (10 -4 Hz ##IMG## [http://ej.iop.org/icons/Entities/lesssim.gif] {lesssim} f ##IMG## [http://ej.iop.org/icons/Entities/lesssim.gif] {lesssim} 10 -2 Hz) will be determined from the gravitational waves by the Laser Interferometer Space Antenna ( LISA ). In our analysis, the chirp signal, ##IMG## [http://ej.iop.org/images/0004-637X/575/2/1030/img1.gif] {img1.gif} , is newly included as a fitting parameter, and dependence on the observation period or wave frequency is studied in detail. Implications for gravitational wave astronomy are also discussed quantitatively.