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Bart Ripperda on Muck Rack

Bart Ripperda

As seen in: Science Magazine, Physical Review B
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Articles

Particle acceleration by magnetic Rayleigh-Taylor instability: Mechanism for flares in black hole accretion flows

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By Vladimir Zhdankin, Alexander Philippov, Bart Ripperda
| Physical Review B
We study the magnetic Rayleigh-Taylor instability in relativistic collisionless plasma, as an astrophysical process for nonthermal particle acceleration. We consider dense plasma on top of a highly magnetized cavity with sheared magnetic field. Using particle-in-cell simulations, we show that small plumes grow and merge progressively to form a large-scale plume, which broadens to drive rapid magnetic reconnection in the cavity.
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