For loud anisotropic gravitational wave backgrounds in LISA, Bayesian spherical harmonic searches reach their best angular resolution at ℓmax=16, limited by computation rather than by signal properties.
Note that the data point for ℓa max = 10 at ∆ϕ = 4π/5 is marked with a †; analysis of the original simulation recovered a significant bimodal- ity in the two-point metric
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Angular Resolution of a Bayesian Search for Anisotropic Stochastic Gravitational Wave Backgrounds with LISA
For loud anisotropic gravitational wave backgrounds in LISA, Bayesian spherical harmonic searches reach their best angular resolution at ℓmax=16, limited by computation rather than by signal properties.