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Measurement of the Height of the Chromospheric Network Emission from Solar Dynamics Observatory Images View all abstracts by submitter

Costas Alissandrakis   Submitted: 2019-11-05 09:48

We measured the height of the chromospheric network in the 1700, 1600, and 304 Å wavelength bands of the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) from the shift of features on the disk with respect to corresponding features in SDO/Helioseismic and Magnetic Imager (HMI) images of the absolute value of the longitudinal magnetic field. We found that near the limb the 304 Å network emission forms 3.60±0.24 Mm above the 1600 Å emission, which, in turn, forms 0.48±0.10 Mm above the HMI (6173 A) level. At the center of the disk the corresponding height differences are 2.99±0.02 Mm and 0.33±0.06 Mm respectively. We also found that the 1600 Å network emission forms 0.25±0.02 Mm above the 1700 Å emission near the limb and 0.20±0.02 Mm at the disk center. Finally, we examined possible variations with the solar cycle. Our results can help to check and refine atmospheric models.

Authors: C. E. Alissandrakis
Projects: SDO-AIA,SDO-HMI

Publication Status: Acceped, Solar Physics
Last Modified: 2019-11-06 10:37
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