Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/6747
Title: Reflection and Refraction of (Magneto-)Acoustic Waves at the Magnetic Canopy: Further Evidences from Multi-Height Seismic Data
Authors: Rajaguru, S. P
Sun, Xudong
Hayashi, K
Couvidat, S
Issue Date: Dec-2013
Publisher: Astronomical Society of the Pacific
Citation: ASP conference series; Vol. 478, pp. 345- 348
Abstract: We recently presented evidence (Rajaguru et al. 2013) that seismic halos around expanding magnetic structures in the lower solar atmosphere are related to the acoustic to magnetoacoustic wave conversions, using multi-height data from Helioseismic and Magnetic Imager (HMI) and Atmospheric Imaging Assembly (AIA: 1700 and 1600 Å channels) onboard Solar Dynamics Observatory (SDO). Using the same data, we present and discuss here further evidence through analyses of maps of phase-shifts between observables from different heights and their correspondence with oscillation power. The phase shift maps provide more direct signatures of reflection and refraction of (magneto-)acoustic wave modes.
Description: Restricted Access © Astronomical Society of the Pacific http://aspbooks.org/custom/publications/paper/478-0345.html
URI: http://prints.iiap.res.in/handle/2248/6747
ISBN: 978-1-58381-840-4
Appears in Collections:IIAP Publications



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