Antimatter as Macroscopic Dark Matter
  Antimatter macroscopic dark matter (macros) refers to a generic class of
antimatter dark matter candidates that interact with ordinary matter primarily
through annihilation with large cross-sections. A combination of terrestrial,
astrophysical, and cosmological observations constrain a portion of the
anti-macro parameter space. However, a large region of the parameter space
remains unconstrained, most notably for nuclear-dense objects.
