Charge Constraints of Macroscopic Dark Matter
  Macroscopic dark matter (macros) refers to a broad class of alternative
candidates to particle dark matter with still unprobed regions of parameter
space. Prior work on macros has considered elastic scattering to be the
dominant energy transfer mechanism in deriving constraints on the abundance of
macros for some range of masses $M_x$ and (geometric) cross-sections $\sigma_x$
However, macros with a significant amount of electric charge would, through
Coulomb interactions, interact strongly enough to have produced observable
signals on terrestrial, galactic and cosmological scales. We determine the
expected signals and constrain the corresponding regions of parameter space,
based on the lack of these signals in observations.
