Anisotropic Searches for Stochastic Gravitational Wave Backgrounds and Foregrounds with the Bayesian LISA Pipeline (BLIP)

POSTER

Abstract

LISA data is expected to feature at least one significant anisotropic stochastic gravitational wave (GW) signal: a galactic foreground comprised of the GW contribution from millions of unresolved double white dwarf (DWD) binaries throughout our galaxy. We use the Bayesian LISA Pipeline (BLIP) to simulate a realistic, population-derived stochastic signal from unresolved DWDs in the Milky Way, and apply BLIP’s all-sky spherical harmonic analysis to perform an anisotropic search for the resulting foreground. We present the results of this search alongside new insight into the angular resolution of the spherical harmonic search, and discuss directions of further development in the area of anisotropic stochastic searches and characterization of the galactic foreground with LISA.

*This work is supported by NASA grant 80NSSC19K0318.

Publication: Characterizing the Galactic Double White Dwarf Foreground with the Bayesian LISA Pipeline (BLIP), Criswell, A., et al. (in prep)
On the Angular Resolution of the Bayesian LISA Pipeline (BLIP) Anisotropic Search, Bloom, M., Criswell, A., et al. (in prep)

Presenters

  • Alexander W Criswell

    • University of Minnesota

Authors

  • Alexander W Criswell

    • University of Minnesota

  • Steven M Rieck

    • University of Minnesota

  • Malachy Bloom

    • Carleton College

  • Jessica Lawrence

    • Texas Technical University
    • Texas Tech University

  • Sharan Banagiri

    • Northwestern University

  • Joseph D Romano

    • Texas Tech Univ
    • Texas Technical University

  • Vuk Mandic

    • University of Minnesota