Global uniqueness in a passive inverse problem of helioseismology - Archive ouverte HAL
Article Dans Une Revue Inverse Problems Année : 2020

Global uniqueness in a passive inverse problem of helioseismology

Résumé

We consider the inverse problem of recovering the spherically symmetric sound speed, density and attenuation in the Sun from the observations of the acoustic field randomly excited by turbulent convection.We show that observations at two heights above the photosphere and at two frequencies above the acoustic cutoff frequency uniquely determine the solar parameters. We also present numerical simulations which confirm this theoretical result.

Dates et versions

hal-02608441 , version 1 (16-05-2020)

Identifiants

Citer

Alexey Agaltsov, Thorsten Hohage, Roman Novikov. Global uniqueness in a passive inverse problem of helioseismology. Inverse Problems, 2020, 36 (5), pp.055004. ⟨10.1088/1361-6420/ab77d9⟩. ⟨hal-02608441⟩
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