Speaker
Description
The nature of dark matter (DM) remains one of the most critical challenges in modern physics. Macroscopic DM present a compelling alternative to conventional particle DM, yet their terrestrial
search is notoriously challenging due to low number density. We presents a unified, multimessenger search strategy for macroscopic DM, dramatically improving existing constraints and proposing a new detection method. We first perform a model independent update of astrophysical constraints from compact objects, utilizing systematic calculations and additional white dwarf data related to ignition and subsequent supernovae. Crucially, for the first time, we explore novel signals of macroscopic DM in future gravitational wave detectors like LISA, TianQin, and Taiji, performing detailed signal-to-noise ratio and Fisher matrix analyses. We demonstrate that these detectors will
possess the requisite sensitivity to probe untouched regions of the DM parameter space. Our results underscore the unique power of the multi-messenger paradigm—spanning stellar astrophysics and gravitational wave astronomy—to explore this distinct and challenging frontier of DM physics.