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Measuring the dipole component of possible Galaxy-binary alignment in the mHz band

Naoki Seto

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Phys. Rev. D 110, 123003 – Published 2 December, 2024

DOI: https://doi.org/10.1103/PhysRevD.110.123003

Abstract

I discuss the usability of the gravitational wave detector, the laser interferometer space antenna, for studying the orientational distribution of compact white dwarf binaries in the Galactic bulge. I pay special attention to measuring the dipole pattern of the distribution around the Galactic rotation axis. Based on the new formulation, which leverages the parity properties of the involved systems, I found that the apparent thickness of the bulge in the sky became critical for the dipole measurement. I also discuss the extra-Galactic studies for black hole binaries and neutron star binaries with midband detectors, such as the big bang observer and DECi-hertz interferometer gravitational wave observatory.

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Phys. Rev. D 110, 123003– Published 2 December, 2024
  • Received 30 August 2024
  • Accepted 25 October 2024
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