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We study the possibility of simultaneously addressing neutrino phenomenologyand the dark matter in the framework of inverse seesaw. The model is theextension of the standard model by the addition of two right handed neutrinosand three sterile fermions which leads to a light sterile state with the massin the keV range along with three light active neutrino states. The lighteststerile neutrino can account for a feasible dark matter(DM) candidate. Wepresent a $S_{4}$ flavor symmetric model which is further augmented by$Z_{4}\times Z_{3}$ symmetry to constrain the Yukawa Lagrangian. The structuresof the mass matrices involved in inverse seesaw within the $S_{4}$ frameworknaturally give rise to correct neutrino mass matrix with non-zero reactormixing angle $ \theta_{13}$. In this framework, we conduct a detailed numericalanalysis both for normal hierarchy as well as inverted hierarchy to obtain darkmatter mass and DM-active mixing which are the key factors for consideringsterile neutrino as a viable dark matter candidate. We constrain the parameterspace of the model from the latest cosmological bounds on the mass of the darkmatter and DM-active mixing.

Phenomenology of keV scale sterile neutrino dark matter with $S_{4}$ flavor symmetry