Speaker
Description
We explore the interplay between dark matter scattering and solar dark photon absorption in two dark matter models with light dark photon mediators. Sub-keV dark photons, abundantly produced in the solar core, provide complementary detection channels to scattering of dark matter from the halo. Incorporating astrophysical and cosmological constraints—including dark matter self-interactions and solar cooling —we identify the viable parameter space for both Dirac and atomic dark matter. For Dirac dark matter, simultaneous detection of scattering and dark photon absorption is possible at direct detection experiments in the near future. In the atomic dark matter case, an interesting interplay of signals from dark atoms, their ionized constituents, and solar dark photons could be observed. To disentangle these signals, the measurement of energy recoil spectra is essential. Combining the detected signals could help to distinguish between different dark matter models.
