NDLI: Characterizing the background corona with sdo/aia

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Characterizing the background corona with sdo/aia

Content Provider	NASA Technical Reports Server (NTRS)
Author	Napier, Kate Alexander, Caroline Winebarger, Amy
Copyright Year	2014
Description	Characterizing the nature of the solar coronal background would enable scientists to more accurately determine plasma parameters, and may lead to a better understanding of the coronal heating problem. Because scientists study the 3D structure of the Sun in 2D, any line-of-sight includes both foreground and background material, and thus, the issue of background subtraction arises. By investigating the intensity values in and around an active region, using multiple wavelengths collected from the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) over an eight-hour period, this project aims to characterize the background as smooth or structured. Different methods were employed to measure the true coronal background and create minimum intensity images. These were then investigated for the presence of structure. The background images created were found to contain long-lived structures, including coronal loops, that were still present in all of the wavelengths, 131, 171, 193, 211, and 335 A. The intensity profiles across the active region indicate that the background is much more structured than previously thought.
File Size	316370
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20150000398
Archival Resource Key	ark:/13960/t7hq8z37z
Language	English
Publisher Date	2014-12-15
Access Restriction	Open
Subject Keyword	Corona Solar Corona Density Measurement Coronal Loops Imaging Techniques Temperature Profiles Sun Space Plasmas Line of Sight Helioseismology Characterization Wavelengths Heating Solar Observatories Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Presentation

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