Wavelets, Intermittency and Solar Flare Hard X-rays 1. Local Intermittency Measure in Cascade and Avalanche Scenarios

Dinkelaker, A.N. and MacKinnon, A.L. (2013) Wavelets, Intermittency and Solar Flare Hard X-rays 1. Local Intermittency Measure in Cascade and Avalanche Scenarios. Solar Physics, 282(2), pp. 471-481. (doi:10.1007/s11207-012-0152-0)

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Publisher's URL: http://dx.doi.org/10.1007/s11207-012-0152-0

Abstract

We introduce the local intermittency measure (LIM) as a tool for the investigation of solar flare hard X-ray light curves. Constructed from wavelet amplitudes, the LIM allows us to investigate the extent to which rapid fluctuations reveal an underlying, scale-invariant process, and to identify those episodes during a flare which definitely represent ‘intermittent’ behaviour (e.g. involvement of new spatial structures). We carry out two sets of simple simulations intended to provide generic examples of ‘top-down’ and ‘bottom-up’ scenarios for the development of flares, and show how LIM may discriminate between them.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacKinnon, Dr Alexander
Authors: Dinkelaker, A.N., and MacKinnon, A.L.
College/School:College of Social Sciences > School of Education
Journal Name:Solar Physics
Publisher:Springer Verlag
ISSN:0038-0938
ISSN (Online):1573-093X

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
542081Rolling Programme in Solar and Plasma AstrophysicsLyndsay FletcherScience & Technologies Facilities Council (STFC)ST/I001808/1P&A - PHYSICS & ASTRONOMY