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arXiv · 2604.10654

Post-Newtonian dynamics of charged compact binaries

Zi-Han Zhang·Tan Liu·Shuai Zhang·Zong-Kuan Guo
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Abstract

We investigate the dissipative dynamics of charged compact binaries in Einstein-Maxwell theory. By evaluating the mass and electric multipole moments, we compute the gravitational and electromagnetic fluxes {through next-to-leading order in the post-Newtonian expansion}. Using the flux-balance equations, we derive the evolution of the orbital angular frequency for quasi-circular inspirals. We further analyze circular orbit stability in charged black-hole binaries and quantify how the charge-to-mass ratios affect the inspiral dynamics.

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Zi-Han Zhang, Tan Liu, Shuai Zhang, Zong-Kuan Guo. 2026-04-12. Post-Newtonian dynamics of charged compact binaries. https://doi.org/10.1103/4x8q-2kzm

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