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dc.contributor.authorGALLAGHER, PETERen
dc.contributor.authorCONLON, PAUL ANTHONYen
dc.contributor.authorMCATEER, ROBERTen
dc.date.accessioned2010-05-19T15:12:34Z
dc.date.available2010-05-19T15:12:34Z
dc.date.issued2010en
dc.date.submitted2010en
dc.identifier.citationKestener, P., P.A. Conlon, A. Khalil, L. Fennell, R.T.J. McAteer, P.T. Gallagher and A. Arneodo, Characterising Complexity in Solar Magnetogram Data using a Wavelet-based Segmentation Method, Astrophysical Journal, 717, 2, 2010, 995-1005en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/39599
dc.descriptionPUBLISHEDen
dc.description.abstractThe multifractal nature of solar photospheric magnetic structures are studied using the 2D wavelet transform modulus maxima (WTMM) method. This relies on computing partition functions from the wavelet transform skeleton defined by the WTMM method. This skeleton provides an adaptive space-scale partition of the fractal distribution under study, from which one can extract the multifractal singularity spectrum. We describe the implementation of a multiscale image processing segmentation procedure based on the partitioning of the WT skeleton which allows the disentangling of the information concerning the multifractal properties of active regions from the surrounding quiet-Sun field. The quiet Sun exhibits a average H\"older exponent $\sim -0.75$, with observed multifractal properties due to the supergranular structure. On the other hand, active region multifractal spectra exhibit an average H\"older exponent $\sim 0.38$ similar to those found when studying experimental data from turbulent flows.en
dc.format.extent995-1005en
dc.language.isoenen
dc.relation.ispartofseriesAstrophysical Journalen
dc.relation.ispartofseries717en
dc.relation.ispartofseries2en
dc.rightsYen
dc.subjectSolar and Stellar Astrophysicsen
dc.titleCharacterising Complexity in Solar Magnetogram Data using a Wavelet-based Segmentation Methoden
dc.typeJournal Articleen
dc.contributor.sponsorEuropean Commissionen
dc.contributor.sponsorIrish Research Council for Science and Engineering Technology (IRCSET)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/gallagpten
dc.identifier.peoplefinderurlhttp://people.tcd.ie/mcateerten
dc.identifier.rssinternalid66685en
dc.identifier.rssurihttp://dx.doi.org/10.1088/0004-637X/717/2/995en


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