Reconstruction of Coronal Magnetic Fields Using a Poloidal–Toroidal Representation

dc.contributor.authorYi, Sibaek
dc.contributor.authorChoe, Gwang-Son
dc.contributor.authorCho, Kyung-Suk
dc.contributor.authorSolanki, Sami K.
dc.contributor.authorBüchner, Jörg
dc.date.accessioned2022-11-29T11:06:51Z
dc.date.available2022-11-29T11:06:51Z
dc.date.issued2022-09-16
dc.date.updated2022-09-25T02:48:55Z
dc.description.abstractA new method for reconstruction of coronal magnetic fields as force-free fields (FFFs) is presented. Our method employs poloidal and toroidal functions to describe divergence-free magnetic fields. This magnetic field representation naturally enables us to implement the boundary conditions at the photospheric boundary, i.e., the normal magnetic field and the normal current density there, in a straightforward manner. At the upper boundary of the corona, a source surface condition can be employed, which accommodates magnetic flux imbalance at the bottom boundary. Although our iteration algorithm is inspired by extant variational methods, it is nonvariational and requires far fewer iteration steps than most others. The computational code based on our new method is tested against the analytical FFF solutions by Titov & Démoulin. It is found to excel in reproducing a tightly wound flux rope, a bald patch, and quasi-separatrix layers with a hyperbolic flux tube.en
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/17742
dc.identifier.urihttps://doi.org/10.14279/depositonce-16528
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.ddc538 Magnetismusde
dc.subject.ddc520 Astronomie und zugeordnete Wissenschaftende
dc.subject.othercoronal magnetic fieldsen
dc.subject.otherreconstructionen
dc.subject.otherpoloidal–toroidal representationen
dc.subject.otherforce-free fieldsen
dc.subject.otherFFFen
dc.titleReconstruction of Coronal Magnetic Fields Using a Poloidal–Toroidal Representation
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumber11
dcterms.bibliographicCitation.doi10.3847/1538-4357/ac8b0e
dcterms.bibliographicCitation.issue1
dcterms.bibliographicCitation.journaltitleThe Astrophysical Journalen
dcterms.bibliographicCitation.originalpublishernameIOP
dcterms.bibliographicCitation.originalpublisherplaceBristol
dcterms.bibliographicCitation.volume937
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Zentrum für Astronomie und Astrophysik::N/A (Not Applicable)
tub.publisher.universityorinstitutionTechnische Universität Berlin

Files

Original bundle
Now showing 1 - 1 of 1
Loading…
Thumbnail Image
Name:
apj_937_1_11.pdf
Size:
12.99 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.86 KB
Format:
Item-specific license agreed upon to submission
Description:

Collections