LISA double white dwarf binaries as Galactic accelerometers

ORAL

Abstract

Galactic double white dwarf (DWD) binaries are key sources for the upcoming Laser Interferometer Space Antenna (LISA), a space-based gravitational wave (GW) detector. Most DWDs within the LISA frequency range are not near merging and emit nearly monochromatic GWs. As these sources are scattered across the Milky Way, they experience varying accelerations in the Galactic gravitational potential, resulting in distinct apparent GW frequency chirps due to the differential acceleration between each DWD and LISA. In this presentation, we explore how Galactic acceleration affects parameter estimation for these sources and discuss how LISA observations could provide insight into the distribution of matter in the Galaxy.

*This work was supported by the Argonne National Laboratory under Award No. 2F60042; the Army Research Laboratory MAQP program under Contract No. W911NF-19–2-0181; and the University of Maryland Quantum Technology Center. E.B. and V.S. are supported by NSF Grants No.~AST-2006538, PHY-2207502, PHY-090003 and PHY-20043, by NASA Grants No.~20-LPS20-0011 and~21-ATP21-0010, by the Simons Foundation, and by the John Templeton Foundation Grant~62840. This work was also made possible through the support of Grant 63034 from the John Templeton Foundation. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation. E.B. and V.S. acknowledge support from the ITA-USA Science and Technology Cooperation program supported by the Ministry of Foreign Affairs of Italy (MAECI) and from the Indo-US Science and Technology Forum through the Indo-US Centre for Gravitational-Physics and Astronomy, grant~IUSSTF/JC-142/2019. E.H.T. acknowledges support by NSF Grant PHY-2310429 and Gordon and Betty Moore Foundation Grant No. GBMF7946.

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Publication: https://arxiv.org/abs/2405.13109

Presenters

  • Reza Ebadi

    • University of Maryland College Park

Authors

  • Reza Ebadi

    • University of Maryland College Park

  • Vladimir Strokov

    • Johns Hopkins University

  • Erwin Tanin

    • Stanford University

  • Emanuele Berti

    • Johns Hopkins University

  • Ronald L Walsworth

    • University of Maryland College Park