Interoccurrence times in the Bak-Tang-Wiesenfeld sandpile model: a comparison with the observed statistics of solar flares |
| |
Authors: | Paczuski Maya Boettcher Stefan Baiesi Marco |
| |
Affiliation: | Perimeter Institute for Theoretical Physics, Waterloo, Canada. |
| |
Abstract: | A sequence of bursts observed in an intermittent time series may be caused by a single avalanche, even though these bursts appear as distinct events when noise and/or instrument resolution impose a detection threshold. In the Bak-Tang-Wiesenfeld sandpile, the statistics of quiet times between bursts switches from Poissonian to scale invariant on raising the threshold for detecting instantaneous activity, since each zero-threshold avalanche breaks into a hierarchy of correlated bursts. Calibrating the model with the time resolution of GOES data, qualitative agreement with the interoccurrence time statistics of solar flares at different intensity thresholds is found. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|