Weighing Milky Way satellites with LISA

ABSTRACT White dwarf stars are a well-established tool for studying Galactic stellar populations. Two white dwarfs in tight binary system offer us an additional messenger – gravitational waves exploring the Milky Way and its immediate surroundings. Gravitational produced by double (DWD) binaries can be detected future Laser Interferometer Space Antenna (LISA). Numerous widespread DWDs have potential to probe shapes, masses, formation histories of populations neighbourhood. In this work we outline method estimating total mass satellite galaxies based on number LISA. To constrain perform Bayesian inference using population synthesis models considering associated with measured distance as only inputs. Based fiducial model find that large satellites masses recovered within (1) factor 2 if star history (SFH) is known (2) order magnitude when marginalizing over different SFH models. For smaller place upper limits their mass. wave observations provide measurements comparable, some cases more precise, than standard electromagnetic observations.