Travel-time sensitivity kernels for time-distance helioseismology

L. Gizon, A. C. Birch

Research output: Contribution to journalConference articlepeer-review


The forward problem of time-distance helioseismology is to compute travel-time perturbations which result from perturbations to a solar model. We present a new and physically motivated general framework for calculations of the sensitivity of travel-times to small local perturbations. Our starting point is a description of the wavefield excited by distributed random sources. We employ the first Born approximation to model scattering from local inhomogeneities. We give a clear definition of travel-time perturbation, which allows a connection between observations and theory. In this framework travel-time sensitivity kernels depend explicitly on the details of the measurement procedure.

Original languageEnglish (US)
Pages (from-to)233-236
Number of pages4
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number493
StatePublished - 2001
Event1st Solar Orbiter Workshop -Solar Encounter 2001- - Puerto de la Cruz, Spain
Duration: May 14 2001May 18 2001


  • Helioseismology: time-distance
  • Waves: scattering

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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