The Birmingham Solar-Oscillations Network (BiSON) has collected helioseismic data over three solar cycles. We use these data to determine how the internal properties of the Sun during this minimum differ from the previous two minima. The cycle 24 data show oscillatory differences with respect to the other two sets, indicating relatively localized changes in the solar interior. Analysis of MDI data from Cycle 23 and Cycle 24 also show significant signs of differences.
@article{arxiv.1003.4262,
title = {Differences between the current solar minimum and earlier minima},
author = {Sarbani Basu and Anne-Marie Broomhall and William J. Chaplin and Yvonne Elsworth and Stephen Fletcher and Roger New},
journal= {arXiv preprint arXiv:1003.4262},
year = {2010}
}
Comments
To appear in the Proc. SOHO-23: Understanding a Peculiar Solar Minimum, eds. S. Cranmer, T. Hoeksema, and J.Kohl, ASPCS in press