Time-Distance Helioseismology of Deep Meridional Circulation View Full Text


Ontology type: schema:Chapter      Open Access: True


Chapter Info

DATE

2020-12-19

AUTHORS

S. P. Rajaguru , H. M. Antia

ABSTRACT

A key component of solar interior dynamics is the meridional circulation (MC), whose poleward component in the surface layers has been well observed. Time-distance helioseismic studies of the deep structure of MC, however, have yielded conflicting inferences. Here, following a summary of existing results we show how a large center-to-limb systematics (CLS) in the measured travel times of acoustic waves affects the inferences through an analysis of frequency dependence of CLS, using data from the Helioseismic and Doppler Imager (HMI) onboard Solar Dynamics Observatory (SDO). Our results point to the residual systematics in travel times as a major cause of differing inferences on the deep structure of MC. More... »

PAGES

107-113

Book

TITLE

Dynamics of the Sun and Stars

ISBN

978-3-030-55335-7
978-3-030-55336-4

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-030-55336-4_11

DOI

http://dx.doi.org/10.1007/978-3-030-55336-4_11

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1133601497


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