Observing Dark Matter via the Gyromagnetic Faraday Effect

Abstract

If dark matter consists of cold, neutral particles with a non-zero magnetic moment, then, in the presence of an external magnetic field, a measurable gyromagnetic Faraday effect becomes possible. This enables direct constraints on the nature and distribution of such dark matter through detailed measurements of the polarization and temperature of the cosmic microwave background radiation.

4 pages, RevTeX; numerical error fixed, some conclusions modified

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Cited by in corpus (19)

• New physics from the polarised light of the cosmic microwave background
• Parity violation constraints using 2006-2007 QUaD CMB polarization spectra
• How to De-Rotate the Cosmic Microwave Background Polarization
• De-Rotation of the Cosmic Microwave Background Polarization: Full-Sky Formalism
• Searching for Anisotropic Cosmic Birefringence with Polarization Data from SPTpol
• Cross-Correlation of Cosmological Birefringence with CMB Temperature
• Shedding Light on Dark Matter: A Faraday Rotation Experiment to Limit a Dark Magnetic Moment
• Implications of a Scalar Dark Force for Terrestrial Experiments
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