Local helioseismology - what does it really tell us?

Details Local helioseismology - what does it really tell us? Local helioseismology - what does it really tell us?

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..428h&link_type=abstract

Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 July

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The subfield of local helioseismology is now 15 years old. In its brief history it has yielded maps of flows beneath the solar surface images of active regions on the far side of the sun and inferences about the sound speed below sunspots. However there has not yet been a systematic study of the consistency among results obtained with the three major local methods of time-distance acoustic holography and ring diagrams. In addition realistic numerical simulations of data suitible for testing the methods have proven difficult to construct. In this talk I will give an overview of the methods comparing them from a heuristic point of view. I will also discuss the types of tests that would be desirable and present the latest results from a data-based comparison exercise now underway.

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