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Coronal Holes and Open Magnetic Flux over Cycles 23 and 24 View all abstracts by submitter

Jiong Qiu   Submitted: 2017-07-08 13:03

As the observational signature of the footprints of solar magnetic field lines open into the heliosphere, coronal holes provide a critical measure of the structure and evolution of these lines. Using a combination of Solar and Heliospheric Observatory/Extreme ultraviolet Imaging Telescope (SOHO/EIT), Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA), and Solar Terrestrial Relations Observatory/Extreme Ultraviolet Imager (STEREO/EUVI A/B) extreme ultraviolet (EUV) observations spanning 1996 - 2015 (nearly two solar cycles), coronal holes are automatically detected and characterized. Coronal hole area distributions show distinct behavior in latitude, defining the domain of polar and low-latitude coronal holes. The northern and southern polar regions show a clear asymmetry, with a lag between hemispheres in the appearance and disappearance of polar coronal holes.

Authors: Lowder, Chris; Qiu, Jiong; Leamon, Robert
Projects: None

Publication Status: Solar Physics, Volume 292, Issue 1, article id.18, 23 pp.
Last Modified: 2017-07-11 11:23
Go to main E-Print page  Observational Study on the Fine Structure and Dynamics of a Solar Jet. I. Energy Build-Up Process around a Satellite Spot.  Gradual Solar Coronal Dimming and Evolution of Coronal Mass Ejection in the Early Phase  Edit Entry  Download Preprint  Delete Entry 

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