Speaker
Description
Numerous astrophysical observations indicate the existence of dark matter via gravitational effects, yet its nature remains elusive. Experiments exploring non-gravitational interactions between dark matter and Standard Model (SM) particles include indirect, direct, and collider detection. Meanwhile, gravitational-wave (GW) observations of compact binary coalescences since GW150914 also offer valuable opportunities to both probe the early Universe and DM interactions. This talk covers three diverse topics: ultralight DM (ULDM) searches with LIGO data, correlated noise in stochastic gravitational-wave background (SGWB) studies, and MeV-scale light DM detection strategies. Specifically, we discuss ULDM detection using new LIGO data via the cross-correlation, Band-Sampled Data excess power (BSD), and Logarithmic Power Spectral Density (LPSD) methods. Regarding correlated noise, we address strategies to estimate its impact on SGWB research by monitoring magnetic field couplings with GW strain channels. Finally, for light DM, we present constraints on effective operators via cosmic-ray boosted DM (CRDM) with LZ data and analyze potential diurnal modulation effects in underground ionization signals caused by the Earth attenuation.