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Fig. 1

image

The two alternative bi-κ-distributions for κ = 9/4 and 2θ/c = θ/c = 0.02, and the associated Maxwellian model: panela) displays their parallel cuts and panelsb) and c) show the contours of the full VDFs at the levels (dotted lines) indicated in panela). Evidently both bi-κ-distributions exhibit enhanced tails relative to the Maxwellian but Kappa-A has, in addition, also an enhanced core.

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