The quantum effects of the spin and the Bohm potential in the oblique propagation of magnetosonic waves

We study the quantum corrections to the oblique propagation of the magnetosonic waves in a warm quantum magnetoplasma composed by mobile ions and electrons. We use a fluid formalism to include quantum corrections due to the Bohm potential and to the spin magnetization energy of electrons. The effects of both quantum corrections are shown in the dispersion relation for perpendicular, parallel and oblique propagation. We find that the quantum contributions to the low frequency depend on the type in the oblique propagation with respect to the background magnetic field. The relevance in astrophysical scenarios is exemplified.

► We study the oblique propagation of magnetosonic waves in spin quantum plasmas. ► The quantum effects of spin and Bohm potential depend on the oblique propagation. ► The perpendicular propagation is corrected by a spin-modified Aflvén velocity. ► For parallel propagation, there is no quantum effects for low-frequency modes. ► In general oblique propagation, the quantum effects are coupled with thermal effects.