We consider the role of the galactic kinetic Sunyaev Zeldovich ( SZ ) effect as a CMB foreground .
While the galactic thermal Sunyaev Zeldovich effect has previously been studied and discarded as a potential CMB foreground , we find that the kinetic SZ effect is dominant in the galactic case .
We analyse the detectability of the kinetic SZ effect by means of an optimally matched filter technique applied to a simulation of an ideal observation .
We obtain no detection , getting a S/N ratio of 0.1 , thereby demonstrating that the kinetic SZ effect can also safely be ignored as a CMB foreground .
However we provide maps of the expected signal for inclusion in future high precision data processing .
Furthermore , we rule out the significant contamination of the polarised CMB signal by second scattering of galactic kinetic Sunyaev-Zeldovich photons , since we show that the scattering of the CMB quadrupole photons by galactic electrons is a stronger effect than the Sunyaev Zeldovich second scattering , and has already been shown to produce no significant polarised contamination .
We confirm the latter assessment also by means of an optimally matched filter .