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Column Density Measurements of a Prominence Observed by AIA

Published online by Cambridge University Press:  06 January 2014

Patrick I. McCauley ,
Yingna Su ,
Edward DeLuca  and
Adriaan van Ballegooijen
Patrick I. McCauley
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden street, Cambridge, MA 02138, USA
Yingna Su
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden street, Cambridge, MA 02138, USA
Edward DeLuca
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden street, Cambridge, MA 02138, USA
Adriaan van Ballegooijen
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden street, Cambridge, MA 02138, USA
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Abstract

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We present column density measurements of a polar crown prominence observed on March 9th, 2012 by the Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory. The structure was viewed on the east limb by AIA and erupted about 30 hours after the observations shown here. We estimate column density by approximating the obscured background emission to obtain an optical depth. This can then be combined with the absorption cross sections of neutral hydrogen and helium, along with the He:H abundance ratio, to calculate column density. We perform this calculation for the 171, 193, 211, and 335 Å AIA passbands.

Keywords

Sun: prominences – Sun: corona – Sun: coronal mass ejections
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 449 - 450
Copyright
Copyright © International Astronomical Union 2013 

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