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The study of neutrinos in astrophysics requires the combination of differentobservational probes. The temperature anisotropies of the cosmic microwavebackground induced via the kinematic Sunyaev-Zel'dovich (kSZ) effect mayprovide interesting information since they are expected to receive significantcontribution from high-redshift plasma. We present a set of cosmologicalhydrodynamical simulations that include a treatment of the neutrino componentconsidering four different sum of neutrino masses: $\Sigmam_\nu=(0,0.15,0.3,0.6)$ eV. Using their outputs, we modelled the kSZ effect dueto the large-scale structure after the reionization by producing mock maps,then computed the kSZ power spectrum and studied how it depends on $z_{\rm re}$and $\Sigma m_\nu$. We also run a set of four simulations to study and correctpossible systematics due to resolution, finite box size and astrophysics. Withmassless neutrinos we obtain $\mathcal{D}^{\rm kSZ}_{3000}=4.0$ $\mu {\rm K}^2$($z_{\rm re}$=8.8), enough to account for all of the kSZ signal of$\mathcal{D}^{\rm kSZ}_{3000}=(2.9\pm1.3)$ $\mu {\rm K}^2$ measured with theSouth Pole Telescope. This translates into an upper limit on the kSZ effect dueto patchy reionization of $\mathcal{D}^{\rm kSZ,patchy}_{3000}<1.0$ $\mu {\rmK}^2$ (95 per cent confidence level). Massive neutrinos induce a damping of kSZeffect power of about 8, 12 and 40 per cent for $\Sigma m_\nu=(0.15,0.3,0.6)$eV, respectively. We study the dependence of the kSZ signal with $z_{\rm re}$and the neutrino mass fraction, $f_\nu$, and obtain $\mathcal{D}^{\rmkSZ}_{3000}\propto z_{\rm re}^{0.26}(1-f_\nu)^{14.3}$. Interestingly, thescaling with $f_\nu$ is significantly shallower with respect to the equivalentthermal SZ effect, and may be used to break the degeneracy with othercosmological parameters.

The kinematic Sunyaev-Zel'dovich effect of the large-scale structure (I): dependence on neutrino mass