Application of Fano profiles to asymmetric resonances in helioseismology

Citation
Ah. Gabriel et al., Application of Fano profiles to asymmetric resonances in helioseismology, ASTRON ASTR, 380(2), 2001, pp. 745-749
Citations number
15
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
380
Issue
2
Year of publication
2001
Pages
745 - 749
Database
ISI
SICI code
1432-0746(200112)380:2<745:AOFPTA>2.0.ZU;2-6
Abstract
Parallels are drawn between the asymmetric resonance profiles observed in g lobal helioseismology and the Fano theory for autoionisation profiles in at omic spectroscopy. We show that the underlying physics of the interaction o f a discrete resonance with a correlated continuum is common to both system s. The approximate formula normally used for fitting to profiles in heliose ismology is essentially similar to that developed for atomic spectroscopy b y Fano. We propose that the two systems are in reality equivalent. This pro position enables us to understand better which resonances in helioseismolog y will be correlated with each other and with which solar background "conti nua". We also question whether the two interacting influences of excitation sources and correlated solar background, are really separate independent p rocesses.