Buildup of Magnetic Shear and Free Energy during Flux Emergence and Cancellation
dc.contributor.author | Fang, Fang | en_US |
dc.contributor.author | Manchester, Ward B. IV | en_US |
dc.contributor.author | Abbett, William P. | en_US |
dc.contributor.author | van der Holst, Bart | en_US |
dc.date.accessioned | 2013-06-28T15:25:39Z | |
dc.date.available | 2013-06-28T15:25:39Z | |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Fang, Fang; Manchester, Ward B. IV; Abbett, William P.; van der Holst, Bart (2012). "Buildup of Magnetic Shear and Free Energy during Flux Emergence and Cancellation." The Astrophysical Journal 754(1): 15. <http://hdl.handle.net/2027.42/98566> | en_US |
dc.identifier.uri | http://stacks.iop.org/0004-637X/754/i=1/a=15 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/98566 | |
dc.description.abstract | We examine a simulation of flux emergence and cancellation, which shows a complex sequence of processes that accumulate free magnetic energy in the solar corona essential for the eruptive events such as coronal mass ejections, filament eruptions, and flares. The flow velocity at the surface and in the corona shows a consistent shearing pattern along the polarity inversion line (PIL), which together with the rotation of the magnetic polarities, builds up the magnetic shear. Tether-cutting reconnection above the PIL then produces longer sheared magnetic field lines that extend higher into the corona, where a sigmoidal structure forms. Most significantly, reconnection and upward-energy-flux transfer are found to occur even as magnetic flux is submerging and appears to cancel at the photosphere. A comparison of the simulated coronal field with the corresponding coronal potential field graphically shows the development of non-potential fields during the emergence of the magnetic flux and formation of sunspots. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | Buildup of Magnetic Shear and Free Energy during Flux Emergence and Cancellation | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/98566/1/0004-637X_754_1_15.pdf | |
dc.identifier.doi | 10.1088/0004-637X/754/1/15 | en_US |
dc.identifier.source | The Astrophysical Journal | en_US |
dc.owningcollname | Physics, Department of |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.