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Howe, R. (Rachel); Broomhall, Anne-Marie; Chaplin, William James; Elsworth, Yvonne; Jain, K. (2013)
Publisher: Institute of Physics Publishing Ltd.
Languages: English
Types: Article
Subjects: QB

Classified by OpenAIRE into

arxiv: Astrophysics::Solar and Stellar Astrophysics
We combine unresolved-Sun velocity and intensity observations at multiple wavelengths from the Helioseismic and Magnetic Imager and Atmospheric Imaging Array onboard the Solar Dynamics Observatory to investigate the possibility of multi-spectral mode-frequency estimation at low spherical harmonic degree. We test a simple multi-spectral algorithm using a common line width and frequency for each mode and a separate amplitude, background and asymmetry parameter, and compare the results with those from fits to the individual spectra. The preliminary results suggest that this approach may provide a more stable fit than using the observables separately.
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