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.

4 pages, to appear in ApJL

References in corpus (6)

• Can Planets survive Stellar Evolution?
• Extrasolar planet detection by binary stellar eclipse timing: evidence for a third body around CM Draconis
• Report on the first round of the Mock LISA Data Challenges
• Probing white dwarf interiors with LISA: periastron precession in double white dwarfs
• Extracting galactic binary signals from the first round of Mock LISA Data Challenges
• Observational Techniques for Detecting Planets in Binary Systems

Cited by in corpus (13)

• Astrophysics and cosmology with a decihertz gravitational-wave detector: TianGO
• Binary radial velocity measurements with space-based gravitational-wave detectors
• The astrophysical science case for a decihertz gravitational-wave detector
• Detecting Accelerating Eccentric Binaries in the LISA Band
• On networks of space-based gravitational-wave detectors
• Searching For Transiting Circumbinary Planets in CoRoT and Ground-Based Data Using CB-BLS
• Prospects for detecting exoplanets around double white dwarfs with LISA and Taiji
• Degeneracy between mass and peculiar acceleration for the double white dwarfs in the LISA band
• LISA double white dwarf binaries as Galactic accelerometers
• The role of triple evolution in the formation of LISA double white dwarfs
• Potential Tertiary Effects on the LISA Verification Binary HM Cancri
• Forecasting Tidal Disruption Events by Binary Black Hole Roulettes
• Perturbative Frequency Expansion for Nearly Monochromatic Binary Black Holes Detectable with LISA