3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum
Measurement of the coronal magnetic field is a crucial ingredient in understanding the nature of solar coronal dynamic phenomena at all scales. We employ STEREO/COR1 data obtained near maximum of solar activity in December 2012 (Carrington rotation, CR 2131) to retrieve and analyze the three-dimens...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-08-01
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| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fspas.2016.00025/full |
| _version_ | 1819208099609706496 |
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| author | Maxim Kramar Vladimir Airapetian Vladimir Airapetian Haosheng Lin |
| author_facet | Maxim Kramar Vladimir Airapetian Vladimir Airapetian Haosheng Lin |
| author_sort | Maxim Kramar |
| collection | DOAJ |
| description | Measurement of the coronal magnetic field is a crucial ingredient in understanding the nature of solar coronal dynamic phenomena at all scales. We employ STEREO/COR1 data obtained near maximum of solar activity in December 2012 (Carrington rotation, CR 2131) to retrieve and analyze the three-dimensional (3D) coronal electron density in the range of heights from $1.5$ to $4 R_odot$ using a tomography method and qualitatively deduce structures of the coronal magnetic field. The 3D electron density analysis is complemented by the 3D STEREO/EUVI emissivity in 195 AA band obtained by tomography for the same CR period. We find that the magnetic field configuration during CR 2131 has a tendency to become radially open at heliocentric distances below $sim 2.5 R_odot$. We compared the reconstructed 3D coronal structures over the CR near the solar maximum to the one at deep solar minimum. Results of our 3D density reconstruction will help to constrain solar coronal field models and test the accuracy of the magnetic field approximations for coronal modeling. |
| first_indexed | 2024-12-23T05:34:00Z |
| format | Article |
| id | doaj.art-38e6abe889274b63abd763b568349cf6 |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-12-23T05:34:00Z |
| publishDate | 2016-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-38e6abe889274b63abd763b568349cf62022-12-21T17:58:23ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2016-08-01310.3389/fspas.2016.000251711773D Global Coronal Density Structure and Associated Magnetic Field near Solar MaximumMaxim Kramar0Vladimir Airapetian1Vladimir Airapetian2Haosheng Lin3The Catholic University of AmericaGeorge Mason UniversityNASA Goddard Space Flight CenterUniversity of HawaiiMeasurement of the coronal magnetic field is a crucial ingredient in understanding the nature of solar coronal dynamic phenomena at all scales. We employ STEREO/COR1 data obtained near maximum of solar activity in December 2012 (Carrington rotation, CR 2131) to retrieve and analyze the three-dimensional (3D) coronal electron density in the range of heights from $1.5$ to $4 R_odot$ using a tomography method and qualitatively deduce structures of the coronal magnetic field. The 3D electron density analysis is complemented by the 3D STEREO/EUVI emissivity in 195 AA band obtained by tomography for the same CR period. We find that the magnetic field configuration during CR 2131 has a tendency to become radially open at heliocentric distances below $sim 2.5 R_odot$. We compared the reconstructed 3D coronal structures over the CR near the solar maximum to the one at deep solar minimum. Results of our 3D density reconstruction will help to constrain solar coronal field models and test the accuracy of the magnetic field approximations for coronal modeling.http://journal.frontiersin.org/Journal/10.3389/fspas.2016.00025/fullTomographymagnetic fieldSunelectron densitycorona |
| spellingShingle | Maxim Kramar Vladimir Airapetian Vladimir Airapetian Haosheng Lin 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum Frontiers in Astronomy and Space Sciences Tomography magnetic field Sun electron density corona |
| title | 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum |
| title_full | 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum |
| title_fullStr | 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum |
| title_full_unstemmed | 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum |
| title_short | 3D Global Coronal Density Structure and Associated Magnetic Field near Solar Maximum |
| title_sort | 3d global coronal density structure and associated magnetic field near solar maximum |
| topic | Tomography magnetic field Sun electron density corona |
| url | http://journal.frontiersin.org/Journal/10.3389/fspas.2016.00025/full |
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