Hunt for magnetic signatures of hidden-photon and axion dark matter in the wilderness
Earth can act as a transducer to convert ultralight bosonic dark matter (axions and hidden photons) into an oscillating magnetic field with a characteristic pattern across its surface. Here we describe the first results of a dedicated experiment, the Search for Noninteracting Particles Experimental Hunt, that aims to detect such dark-matter-induced magnetic-field patterns by performing correlated measurements with a network of magnetometers in relatively quiet magnetic environments (in the wilderness far from human-generated magnetic noise). Our experiment constrains parameter space describing hidden-photon and axion dark matter with Compton frequencies in the 0.5–5.0 Hz range. Limits on the kinetic-mixing parameter for hidden-photon dark matter represent the best experimental bounds to date in this frequency range.
Sulai, Ibrahim A., Saarik Kalia, Ariel Azra, et al. 2023. "Hunt for magnetic signatures of hidden-photon and axion dark matter in the wilderness." Physical Review D 108(9): 096026.
American Physical Society
Physical Review D
Physics and Astronomy