Could Dark Matter Heavy Neutrinos produce Spin Flip Radiation?

Abstract: There is a clear indication that dark matter in the Milky Way absorbs a tiny amount of light in the visible parts of the spectrum, (Baruch 2025a, and 2025b) . In Baruch (2025c) it is conjectured that this is caused by dark matter forming binary pairs which are destroyed (ionised) by the momentum of photons in the visible parts of the spectrum. This paper examines whether the dark matter binaries will also radiate photons. Can a binary form of dark matter with two spin half fermions produce spin flip radiation in the same way that hydrogen does with the 21cm line? It is shown that any such spin flip radiation would be very faint due to the excessively long half life of the suggested binary form of dark matter.