  Dark matter is a popular candidate to a new source of primary-charged
particles, especially positrons in cosmic rays, which are proposed to account
for observable anomalies. While this hypothesis of decaying or annihilating DM
is mostly applied for our Galaxy, it could possibly lead to some interesting
phenomena when applied for the other ones. In this work, we look into the
hypothetical asymmetry in gamma radiation from the upper and lower hemisphere
of the dark matter halo of the Andromeda galaxy due to inverse Compton
scattering of starlight on the DM-produced electrons and positrons. While our
2D toy model raises expectations for the possible effect, a more complex
approach gives negligible effect for the dark halo case, but shows some
prospects for a dark disk~model.
