Accretion of dark matter by stars

Understand

Searches for dark matter imprints are one of the most active areas of current research.

• We focus here on light fields with mass $m_B$, such as axions and axion-like candidates.
• Using perturbative techniques and full-blown nonlinear Numerical Relativity methods, we show that (i) dark matter can pile up in the center of stars, leading to configurations and geometries oscillating with frequency which is a multiple of f=$2.5 10^{14}$ $m_B c^2$/eV Hz.
• These configurations are stable throughout most of the parameter space, and arise out of credible mechanisms for dark-matter capture.