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Exploring the Orbital Alignments of Galactic Close White Dwarf Binaries with LISA

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arxiv 2404.13313 v2 pith:5XYYVBTJ submitted 2024-04-20 astro-ph.HE gr-qc

Naoki Seto This is my paper
classification astro-ph.HEgr-qc
keywords binariesdwarflisawhitealignmentsanalysisbulgeclose
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

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.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing the Orientation Distribution of Nearby Double White Dwarfs through Gravitational Waves with LISA

    astro-ph.GA 2026-07 conditional novelty 6.0 of 10

    A spherical-harmonic method extracts low-multipole orientation coefficients of ~500 nearby double white dwarfs from LISA data with ~0.02 shot-noise uncertainty.

  2. A Multimessenger Strategy for Downselecting the Orientations of Galactic Close White Dwarf Binaries

    gr-qc 2025-07 accept novelty 6.0 of 10

    Using EM-determined orbital phases, the fourfold degeneracy in the transverse projection of a close white dwarf binary's angular momentum from LISA data can be reduced to a twofold degeneracy.

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