Journal article

Were the chaotic ELMs in TCV the result of an ARMA process?

The results of a previous paper claiming the demonstration that edge localized mode (ELM) dynamics on TCV are chaotic in a number of cases has recently been called into question, because the statistical test employed was found to also identify linear auto regressive-moving average (ARMA) models as chaotic. The TCV ELM data has therefore been re-examined with an improved method that is able to make this distinction, and the ARMA model is found to be an inappropriate description of the dynamics on TCV The hypothesis that ELM dynamics are chaotic on TCV in a number of cases is therefore still favoured.


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