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We describe an F-statistic search for continuous gravitational waves fromgalactic white-dwarf binaries in simulated LISA Data. Our search method employsa hierarchical template-grid based exploration of the parameter space. In thefirst stage, candidate sources are identified in searches using differentsimulated laser signal combinations (known as TDI variables). Since each sourcegenerates a primary maximum near its true "Doppler parameters" (intrinsicfrequency and sky position) as well as numerous secondary maxima of theF-statistic in Doppler parameter space, a search for multiple sources needs todistinguish between true signals and secondary maxima associated with other,"louder" signals. Our method does this by applying a coincidence test to rejectcandidates which are not found at nearby parameter space positions in searchesusing each of the three TDI variables. For signals surviving the coincidencetest, we perform a fully coherent search over a refined parameter grid toprovide an accurate parameter estimation for the final candidates. Suitablytuned, the pipeline is able to extract 1989 true signals with only 5 falsealarms. The use of the rigid adiabatic approximation allows recovery of signalparameters with errors comparable to statistical expectations, although thereis still some systematic excess with respect to statistical errors expectedfrom Gaussian noise. An experimental iterative pipeline with seven rounds ofsignal subtraction and re-analysis of the residuals allows us to increase thenumber of signals recovered to a total of 3419 with 29 false alarms.

Searching for Galactic White Dwarf Binaries in Mock LISA Data using an F-Statistic Template Bank