In this paper, small but finite amplitude electrostatic solitary waves in a relativistic
degenerate magnetoplasma, consisting of relativistically degenerate electrons and non-
degenerate cold ions, are investigated. The Zakharov-Kuznetsov equation is derived
employing the reductive perturbation technique and its solitary wave solution is analyzed. It
is shown that only compressive electrostatic solitary structures can propagate in such a
degenerate plasma system. The effects of plasma number density, ion cyclotron frequency …