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Probing Cosmic-Ray Transport with Radio Synchrotron Harps in the Galactic Center

  • Authors: Timon Thomas, Christoph Pfrommer, and Torsten Enßlin

2020 The Astrophysical Journal Letters 890 L18.

  • Provider: AAS Journals

Caption: Figure 1.

Archetypical transport modes of CR fluids. Left: CRs tied to frozen-in magnetic fields are advected with the bulk plasma velocity, vadv. Middle: when CRs are weakly scattered by Alfvén waves, they diffuse away from a given source (after an initial time) with an rms velocity of ﹩\sqrt{2\kappa /t}﹩ (where t is the time and κ denotes the diffusion coefficient) along the magnetic field. Right: if CRs are effectively scattered, they stream with the Alfvén speed, va, along the magnetic field.

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