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Dark photon limits from magnetic fields and astrophysical plasmas
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abstract
Dark photons may kinetically mix with our photon and modify Maxwell's equations. We examine their impact on the Lorentz force acting on the plasma in astrophysical magnetospheres. Solving the relevant magnetohydrodynamic equations, we show that any dark photon effect is negligible. The existing bound on dark photons with a mass below $10^{-14}$ eV, coming from Pioneer 10 observations of Jupiter's magnetosphere, relies on such an effect and is thus unreliable. To rectify this, we use recent Juno analyses to isolate any dark photon-induced modification of the Jovian magnetic field and hence place a numerically similar limit.
Forward citations
Cited by 2 Pith papers
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Can Orbital Decay of Accreting Binary Pulsars Probe Dark Matter?
Dark matter accretion onto binary pulsars is far too weak to affect observed orbital decay, so existing pulsar timing data cannot probe dark matter microphysics.
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Probing Dark Photons through Gravitational Decoupling of Mass-State Oscillations in Interstellar Media
The paper derives an unsuppressed photon-dark photon oscillation probability from a nonphysical initial mass eigenstate and uses it to forecast weak quasar lensing constraints.
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