Bayesian Analysis of Multiple Harmonic Oscillations in the Solar Corona

Díaz, A. J.; Asensio-Ramos, A.; Arregui, I.
Bibliographical reference

The Astrophysical Journal Letters, Volume 765, Issue 1, article id. L23, 5 pp. (2013).

Advertised on:
3
2013
Number of authors
3
IAC number of authors
3
Citations
20
Refereed citations
20
Description
The detection of multiple mode harmonic kink oscillations in coronal loops enables us to obtain information on coronal density stratification and magnetic field expansion using seismology inversion techniques. The inference is based on the measurement of the period ratio between the fundamental mode and the first overtone and theoretical results for the period ratio under the hypotheses of coronal density stratification and magnetic field expansion of the wave guide. We present a Bayesian analysis of multiple mode harmonic oscillations for the inversion of the density scale height and magnetic flux tube expansion under each of the hypotheses. The two models are then compared using a Bayesian model comparison scheme to assess how plausible each one is given our current state of knowledge.
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