Searching for Dark Matter with Cosmic Gamma Rays summarizes the
evidence for dark matter and what we can learn about its particle
nature using cosmic gamma rays. It has almost been 100 years since
Fritz Zwicky first detected hints that most of the matter in the
Universe that doesn't directly emit or reflect light. Since then,
the observational evidence for dark matter has continued to grow.
Dark matter may be a new kind of particle that is governed by
physics beyond our Standard Model of particle physics. In many
models, dark matter annihilation or decay produces gamma rays.
There are a variety of instruments observing the gamma-ray sky from
tens of MeV to hundreds of TeV. Some make deep, focused
observations of small regions, while others provide coverage of the
entire sky. Each experiment offers complementary sensitivity to
dark matter searches in a variety of target sizes, locations, and
dark matter mass scales. We review results from recent gamma-ray
experiments including anomalies some have attributed to dark
matter. We also discuss how our gamma-ray observations complement
other dark matter searches and the prospects for future
experiments.
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