Abstract
We investigate the effects of a slowly rotating compact gravitational source on plasma oscillations using the gravitoelectromagnetic approximation to the general theory of relativity. It is shown that there is a shift in the plasma frequency and hence in the refractive index of the plasma due to the gravitomagnetic force. Estimates for the difference in frequency of radially transmitted electromagnetic signals are given for typical compact star candidates. The proposed shift provides a new test of general theory of relativity in the slow rotation approximation.
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Mirza, B.M. General Relativistic Shift in Plasma Frequency due to a Slowly Rotating Compact Star. Int J Theor Phys 48, 723–728 (2009). https://doi.org/10.1007/s10773-008-9848-1
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DOI: https://doi.org/10.1007/s10773-008-9848-1