Detecting Planets around Compact Binaries with Gravitational Wave Detectors in Space
Abstract
I propose a method to detect planets around compact binaries that are strong sources of gravitational radiation. This approach is to measure gravitational-wave phase modulations induced by the planets, and its prospect is studied with a Fisher matrix analysis. I find that, using the Laser Interferometer Space Antenna (LISA), planets can be searched for around ~3000 Galactic double white dwarfs with detection limit ~4 M_J (M_J~ 2x10^{30}g: the Jupiter mass). With its follow-on missions, planets with mass ~1 M_J might be detected around double neutron stars even at cosmological distances z~1. In this manner, gravitational wave observation has potential to make interesting contributions to extra-solar planetary science.
Keywords
Cite
@article{arxiv.0802.3411,
title = {Detecting Planets around Compact Binaries with Gravitational Wave Detectors in Space},
author = {Naoki Seto},
journal= {arXiv preprint arXiv:0802.3411},
year = {2013}
}
Comments
4 pages, to appear in ApJL