Multifractal analysis based on the Choquet capacity: Application to solar magnetograms

Autor:	Miroslav M. Novak, N.G. Makarenko, L. M. Karimova, Boris Kozelov
Rok vydání:	2012
Předmět:	Statistics and Probability Physics Multifractal system Condensed Matter Physics Spectral line Magnetic field On board symbols.namesake Observatory QUIET Physics::Space Physics symbols Astrophysics::Solar and Stellar Astrophysics Doppler effect Borel measure Remote sensing
Zdroj:	Physica A: Statistical Mechanics and its Applications. 391:4290-4301
ISSN:	0378-4371
DOI:	10.1016/j.physa.2012.03.042
Popis:	We explore the multiscale properties of the line-of-sight component of Solar magnetic fields using magnetograms of the full disc obtained from the Michelson Doppler Imager (MDI) on board the Solar and Heliospheric Observatory (SOHO). Multifractal spectra are estimated by different methods, based on the Choquet capacity, instead of the traditional Borel measure. We have extracted spectra corresponding to active regions (AR) as well as those from quiet regions of the Sun. The shapes of spectra of active regions and those of quiet regions of the Sun are different, displaying different lengths of left-hand and right-hand branches. We indicate that multifractal scaling of magnetograms can be produced by a set of statistically similar elements in digital high resolution images. The same features are found in images of many terrestrial scenes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0e6a7eb465163229cc6ad33958684d1e https://doi.org/10.1016/j.physa.2012.03.042 Zobrazit plný text záznamu Full Text from ScienceDirect