Polar Brightening in ALMA full-disk solar images
Abstract
We have analysed polar brightening effect in two images recorded by the ALMA telescope in 2015 in Bands 3 ($\lambda=2.8$ mm, $\nu=107$ GHz) and 6 ($\lambda=1.2$ mm, $\nu=248$ GHz). After removing the limb brightening effect we found that the amplitude of variations is $\approx 180$ K in both Bands.
- Publication:
-
Central European Astrophysical Bulletin
- Pub Date:
- 2019
- Bibcode:
- 2019CEAB...43....1S
- Keywords:
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- Quiet Chromosphere;
- Quiet Radio Emission