6 Result(s)

Article

Constructing and Characterising Solar Structure Models for Computational Helioseismology

In local helioseismology, numerical simulations of wave propagation are useful to model the interaction of solar waves with perturbations to a background solar model. However, the solution to the linearised eq...

H. Schunker, R. H. Cameron, L. Gizon, H. Moradi in Solar Physics (2011)

Article

Newly Identified Properties of Surface Acoustic Power

The cause of enhanced acoustic power surrounding active regions, known as the acoustic halo, is not as yet understood. We explore the properties of the enhanced acoustic power observed near disk center from 21...

H. Schunker, D. C. Braun in Solar Physics (2011)

Article

Modeling the Subsurface Structure of Sunspots

While sunspots are easily observed at the solar surface, determining their subsurface structure is not trivial. There are two main hypotheses for the subsurface structure of sunspots: the monolithic model and ...

H. Moradi, C. Baldner, A. C. Birch, D. C. Braun, R. H. Cameron… in Solar Physics (2010)

Article

Erratum to: Helioseismology of Sunspots: A Case Study of NOAA Region 9787

L. Gizon, H. Schunker, C. S. Baldner, S. Basu, A. C. Birch… in Space Science Reviews (2010)

Article

Helioseismology of Sunspots: A Case Study of NOAA Region 9787

Various methods of helioseismology are used to study the subsurface properties of the sunspot in NOAA Active Region 9787. This sunspot was chosen because it is axisymmetric, shows little evolution during 20–28...

L. Gizon, H. Schunker, C. S. Baldner, S. Basu, A. C. Birch… in Space Science Reviews (2009)

Article

Physical Properties of Wave Motion in Inclined Magnetic Fields within Sunspot Penumbrae

At the surface of the Sun, acoustic waves appear to be affected by the presence of strong magnetic fields in active regions. We explore the possibility that the inclined magnetic field in sunspot penumbrae may...

H. Schunker, D. C. Braun, C. Lindsey, P. S. Cally in Solar Physics (2008)