  It has recently been proposed that gamma-ray burst (GRB) events may be
modified by the presence of a dark matter sector subcomponent that is charged
under an unbroken U(1). This proposal depends upon there being a non-trivial
density of charged dark matter in star forming regions of galaxies which host
GRBs. We discuss four Wolf-Rayet galaxies (NGC 1614, NGC 3367, NGC 4216 and NGC
5430) which should contain comparable amounts of dark matter gas and visible
matter gas in the star forming regions. We show that the ratio of dark jet
power to visible jet power depends only on the ratio of particle mass and
charge when the densities are equal, allowing for these input parameters to be
probed directly by future observations of GRBs.
