Variation in the LISA Galactic Stochatic Background

LISA will experience a time-varying galactic stochastic gravitational-wave foreground due to the expected large population of ultracompact binaries in the milky way. Previous work has shown that the time variation induced by the annual rotation of the constellation's antenna pattern makes a significant difference in LISA's sensitivity. However, underlying uncertainties in the galactic white dwarf population mean there is substantial uncertainty in the exact amplitude, spectral shape, and pattern of variation that will be seen. In this work, I present results from using a diverse set of COSMIC realizations of the galactic population to better understand the range of background amplitudes, shapes, and other characteristics that are plausible for LISA within currently astrophysical constriants. I will examine the significance of the different scenarios for LISA data analysis and scientific impact, as well as the ability of LISA to distinguish tinformation about the astrophysical formation channels of the background.