Direct and indirect detection of dissipative dark matter
  We study the constraints from direct detection and solar capture on dark
matter scenarios with a subdominant dissipative component. This dissipative
dark matter component in general has both a symmetric and asymmetric relic
abundance. Dissipative dynamics allow this subdominant dark matter component to
cool, resulting in its partial or total collapse into a smaller volume inside
the halo (e.g., a dark disk) as well as a reduced thermal velocity dispersion
compared to that of normal cold dark matter. We first show that these features
considerably relax the limits from direct detection experiments on the
couplings between standard model (SM) particles and dissipative dark matter. On
the other hand, indirect detection of the annihilation of the symmetric
dissipative dark matter component inside the Sun sets stringent and robust
constraints on the properties of the dissipative dark matter. In particular,
IceCube observations force dissipative dark matter particles with mass above 50
GeV to either have a small coupling to the SM or a low local density in the
solar system, or to have a nearly asymmetric relic abundance. Possible
helioseismology signals associated with purely asymmetric dissipative dark
matter are discussed, with no present constraints.
