We review several current aspects of dark matter theory and experiment. We overview the
present experimental status, which includes current bounds and recent claims and hints of a …

We review sterile neutrinos as possible Dark Matter candidates. After a short summary on
the role of neutrinos in cosmology and particle physics, we give a comprehensive overview …

Abstract The Facility for Antiproton and Ion Research (FAIR) will be the accelerator-based
flagship research facility in many basic sciences and their applications in Europe for the …

Observations of nearby galaxies and galaxy clusters have reported an unexpected x-ray
emission line around 3.5 kilo–electron volts (keV). Proposals to explain this line include …

Sterile neutrinos are natural extensions to the standard model of particle physics in neutrino
mass generation mechanisms. If they are relatively light, less than approximately 10 keV …

The dark matter (DM) searches falling under the umbrella of indirect detection seek to
identify possible visible products of DM interactions, originating from the DM already present …

The current status of bound state quantum electrodynamics calculations of transition
energies for few-electron ions is reviewed. Evaluation of one and two body QED correction …

We report a systematic search for an emission line around 3.5 keV in the spectrum of the
cosmic X-ray background using a total of∼ 10 Ms Chandra observations toward the …

Highly charged ions (HCIs) constitute a large class of atomic systems since each element
has as many ionization states as it has protons—in a sense, this extends the periodic table …

These lectures, presented at the 2021 Les Houches Summer School on Dark Matter, provide
an introduction to key methods and tools of indirect dark matter searches, as well as a status …