Researchers from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam and from the French Alternative Energies and Atomic Energy Commission (CEA) in Saclay, Paris, have shown how the planned space-based gravitational-wave observatory LISA could detect exoplanets orbiting white dwarf binaries everywhere in our Milky Way and in the nearby Magellanic Clouds. The work, published in Nature Astronomy, overcomes certain limitations of current electromagnetic detection techniques and might allow LISA to detect planets down to 50 Earth masses.
Read the research paper: N. Tamanini, C. Danielski. The gravitational-wave detection of exoplanets orbiting white dwarf binaries using LISA. Nature Astronomy