Article Dans Une Revue Physical Review Research Année : 2024

Wave topology of stellar inertial oscillations

Résumé

Inertial waves in convective regions of stars exhibit topological properties linked to a Chern number of 1. The first of these is a unique, unidirectional, prograde oscillation mode within the cavity, which propagates at arbitrarily low frequencies for moderate azimuthal wave numbers. The second are phase singularities around which the phase winds in Fourier space, with winding numbers ν=±1 depending on the hemisphere. Phase winding is a collective effect over waves propagating in all directions that is strongly robust to noise. This suggests a topology-based method for wave detection in noisy observational data.

Dates et versions

insu-04858877 , version 1 (30-12-2024)

Identifiants

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Armand Leclerc, Guillaume Laibe, Nicolas Perez. Wave topology of stellar inertial oscillations. Physical Review Research, 2024, 6, ⟨10.1103/PhysRevResearch.6.043299⟩. ⟨insu-04858877⟩
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