Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh13b1935b&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH13B-1935
Astronomy and Astrophysics
Astrophysics
[7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7522] Solar Physics, Astrophysics, And Astronomy / Helioseismology
Scientific paper
The GONG++ network has been widely used in helioseismologic analysis. However, like it is a terrestrial observatories network the images are highly perturbed by the atmospheric variability, doing it some impractical to be used in helioseismic techniques on compact regions over the solar surface. In this work we discussed briefly the cleaning techniques on the images proposed by Lindsey and Donea (2008) to reduce the noise caused by the atmospheric smearing but now using in it a laplacian of nine points instead of five points, like was proposed originally by the authors, to correct the atmospheric smearing. This method is applied to Dopplergrams of the seismically active flares observed by GONG and compared with those taken by SOHO/MDI and SDO/HMI.
Alvarado J. D.
Buitrago-Casas J. C.
Calvo-Mozo B.
Donea Alina
Lindsey Charles A.
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