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Exploring the Orbital Alignments of Galactic Close White Dwarf Binaries with LISA
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Exploring the Orbital Alignments of Galactic Close White Dwarf Binaries with LISA
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Using the proposed space gravitational wave detector LISA, we will be able to measure the geometrical configurations of $\sim 10^4$ close white dwarf binaries in our Galaxy. The obtained data will be an entirely new resource to examine the randomness of their orbital orientations. Partly motivated by a recent reported on the systematic alignments of bulge planetary nebulae, we discuss the outlook of the orientational analysis with LISA. We find that a quadrupole pattern as small as $\sim 0.05$ can be detected for bulge white dwarf binaries, owing to their large available number. From such a pattern analysis, we might geometrically explore fossil records in our Galaxy billions of years ago.
Forward citations
Cited by 1 Pith paper
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Probing the Orientation Distribution of Nearby Double White Dwarfs through Gravitational Waves with LISA
A spherical-harmonic method extracts low-multipole orientation coefficients of ~500 nearby double white dwarfs from LISA data with ~0.02 shot-noise uncertainty.
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