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Wavelets, Intermittency and Solar Flare Hard X-rays 2. LIM Analysis of High Time Resolution BATSE Data

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Abstract

We apply local intermittency measure (LIM) analysis to 64 ms time resolved BATSE measurements of hard X-rays from several solar flares. LIM analysis yields information on the character of the processes giving rise to fluctuations in light curves, e.g. avalanche vs. cascade pictures. We present LIM scaleograms for several flares and summarise scaleogram morphological features. More detailed descriptions are given of the behaviour in the flare of 13 January 1992 (the well-known ‘Masuda flare’) and an interesting event on 22 November 1998. All flares display episodes of intermittency across a range of scales. LIM scaleogram features may be consistent with both ‘top-down’ and ‘bottom-up’ scenarios for the development of small-scale structure, sometimes within the same flare. Thus neither class of model captures the totality of the events in a flare.

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Acknowledgements

Solar physics research in the University of Glasgow is supported by a STFC Rolling Grant. We thank Richard Schwartz for advice on BATSE data, and Siming Liu for useful discussions. We also thank the referee for helpful comments.

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Authors and Affiliations

  1. Department of Physics, SUPA, University of Strathclyde, Glasgow, UK

    A. N. Dinkelaker

  2. SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK

    A. L. MacKinnon

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  1. A. N. Dinkelaker
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  2. A. L. MacKinnon
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Correspondence to A. L. MacKinnon.

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Dinkelaker, A.N., MacKinnon, A.L. Wavelets, Intermittency and Solar Flare Hard X-rays 2. LIM Analysis of High Time Resolution BATSE Data. Sol Phys 282, 483–501 (2013). https://doi.org/10.1007/s11207-012-0177-4

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  • DOI: https://doi.org/10.1007/s11207-012-0177-4

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