dc.contributor.author | GALLAGHER, PETER | en |
dc.contributor.author | CONLON, PAUL ANTHONY | en |
dc.date.accessioned | 2010-05-19T15:14:00Z | |
dc.date.available | 2010-05-19T15:14:00Z | |
dc.date.issued | 2010 | en |
dc.date.submitted | 2010 | en |
dc.identifier.citation | Conlon, Paul A. and Gallagher, P.T., Constraining Three-Dimensional Magnetic Field Extrapolations Using the Twin Perspectives of STEREO, The Astrophysical Journal, 715, 1, 2010, 59-65 | en |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/39601 | |
dc.description | PUBLISHED | en |
dc.description.abstract | The three-dimensional magnetic topology of a solar active region (NOAA 10956) was reconstructed using a linear force-free field extrapolation constrained using the twin perspectives of STEREO. A set of coronal field configurations was initially generated from extrapolations of the photospheric magnetic field observed by the Michelson Doppler Imager on SOHO. Using an EUV intensity-based cost function, the extrapolated field lines that were most consistent with 171 ? passband images from the Extreme UltraViolet Imager on STEREO were identified. This facilitated quantitative constraints to be placed on the twist (?) of the extrapolated field lines, where ? ? B = ?B. Using the constrained values of ?, the evolution in time of twist, connectivity, and magnetic energy were then studied. A flux emergence event was found to result in significant changes in the magnetic topology and total magnetic energy of the region. | en |
dc.format.extent | 59-65 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | The Astrophysical Journal | en |
dc.relation.ispartofseries | 715 | en |
dc.relation.ispartofseries | 1 | en |
dc.rights | Y | en |
dc.subject | corona | en |
dc.subject | flares | en |
dc.title | Constraining Three-Dimensional Magnetic Field Extrapolations Using the Twin Perspectives of STEREO | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/gallagpt | en |
dc.identifier.rssinternalid | 66672 | en |
dc.identifier.rssuri | http://dx.doi.org/10.1088/0004-637X/715/1/59 | en |
dc.contributor.sponsor | Irish Research Council for Science and Engineering Technology (IRCSET) | en |