Identifying Disappearance of a White Dwarf Binary with LISA

Abstract

We discuss the prospect of identifying a white dwarf binary merger by monitoring disappearance of its nearly monochromatic gravitational wave. For a ten-year operation of the laser interferometer space antenna (LISA), the chance probability of observing such an event is roughly estimated to be 20%. By simply using short-term coherent signal integrations, we might determine the merger time with an accuracy of $\sim$3-10 days. Also considering its expected sky localizability $\sim 0.1$-$0.01\mathrm{de}{\mathrm{g}}^2$, LISA might make an interesting contribution to the multi-messenger study on a merger event.

6 pages, 1 figure

References in corpus (4)

• Global Analysis of the Gravitational Wave Signal from Galactic Binaries
• Measuring Individual Masses of Binary White Dwarfs with Space-based Gravitational-wave Interferometers
• Two decades of optical timing of the shortest-period binary star system HM Cancri
• Measuring the Galactic Binary Fluxes with LISA: Metamorphoses and Disappearances of White Dwarf Binaries