Prototype global analysis of LISA data with multiple source types

The novel data analysis challenges posed by the Laser Interferometer Space Antenna (LISA) arise from overwhelmingly large number of astrophysical sources in measurement band and density with which they are found data. Robust detection characterization numerous gravitational wave LISA can not be done sequentially, but rather through a simultaneous global fit model containing full suite instrumental features present While previous analyses have focused on individual source types isolation, here we first demonstration combined populations. prototype pipeline uses blocked Metropolis Hastings algorithm to alternatingly population ultracompact galactic binaries, known “verification binaries” already identified electromagnetic observations, massive black hole mergers, an instrument noise model. software (GLASS) is assembled independently developed samplers for different components. modular design enables flexibility future development defining standard interfaces adding new, or updating additional, components without being overly prescriptive how those modules must internally designed. GLASS demonstrated simulated Data Challenge 2b. Results road-map continued described detail.14 MoreReceived 11 January 2023Accepted 27 2023DOI:https://doi.org/10.1103/PhysRevD.107.063004© 2023 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasGravitational wavesGravitation, Cosmology & Astrophysics