Table 1 Transition wavenumbers are determined by magnetic field measurements

k_∥ versus k_⟂ distributions of magnetic energy

Purely perpendicular cascade, k_⊥ < 2 × 10⁻⁴ km⁻¹

Goldreich–Sridhar cascade, k_⊥ > 2 × 10⁻⁴ km⁻¹

Spectral slopes of magnetic energy

Wave-like (−2), 1.6 × 10⁻⁴ < k_⊥ < 3 × 10⁻⁴ km⁻¹

Kolmogorov-like (−5/3), 3 × 10⁻⁴ < k_⊥ < 7 × 10⁻⁴ km⁻¹

Nonlinearity parameter (χ_BA)

X_BA ≪ 1, k_⊥ < 1 × 10⁻⁴ km⁻¹

X_BA ≈ 1 and X_BA ≥ 1, 3 × 10⁻⁴ < k_⊥ < 7 × 10⁻⁴ km⁻¹

Frequency–wavenumber distributions

Single-frequency fluctuations, f_rest ≈ f_A, k_⊥ < 5 × 10⁻⁵ km⁻¹

Broadening-frequency fluctuations with \({f}_\mathrm{rest}\propto {k}_{\perp }^{\;2/3}\) boundary, k_⊥ > 1 × 10⁻⁴ km⁻¹