Power law distributions of burst duration and interburst interval in the solar wind: Turbulence or dissipative self-organized criticality?

Large-scale patterns of culture change may be explained by models of self organized criticality, or alternatively, by multiplicative processes. We speculate that popular album activity may be similar to critical models of extinction in that interconnected agents compete to survive within a limited space. Here we investigate whether popular music albums as listed on popular album charts display evidence of self-organized criticality, including a self-affine time series of activity and power-law distributions of lifetimes and exit activity in the chart. We find it difficult to distinguish between multiplicative growth and critical model hypotheses for these data. However, aspects of criticality may be masked by the selective sampling that a "Top 200" listing necessarily implies.

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Acoustic emission study of deformation behavior of nacre

International Journal of Modern Physics B ◽

10.1142/s021797921650017x ◽

2016 ◽

Vol 30 (06) ◽

pp. 1650017 ◽

Cited By ~ 3

Author(s):

Shunfei Luo ◽

Hongyun Luo ◽

Zhiyuan Han

Keyword(s):

Acoustic Emission ◽

Power Law ◽

Deformation Behavior ◽

Fracture Dynamics ◽

Self Organized ◽

Range Correlation ◽

Self Organized Criticality ◽

Emission Study ◽

Acoustic Emission Study ◽

Power Law Distributions

A study on the acoustic emission (AE) characteristics during deformation of nacre material was performed. We found that intermittent AE events are generated during nacre deformation. These avalanches may be attributed to microfracture events of the aragonite (CaCO3) nano-asperities and bridges during tablet sliding. These events show several critical features, such as the power-law distributions of the avalanche sizes and interval. These results suggest that the underlying fracture dynamics during nacre deformation display a self-organized criticality (SOC). The results also imply that the disorder and long-range correlation between local microfracture events may play important roles in nacre deformation.

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Correction to: On the Power-Law Distribution of Pitch-Angle Scattering Times in Solar Wind Turbulence

Solar Physics ◽

10.1007/s11207-019-1468-9 ◽

2019 ◽

Vol 294 (6) ◽

Author(s):

Silvia Perri ◽

Francesco Pucci ◽

Francesco Malara ◽

Gaetano Zimbardo

Keyword(s):

Solar Wind ◽

Power Law ◽

Pitch Angle ◽

Power Law Distribution ◽

Solar Wind Turbulence ◽

Angle Scattering ◽

Wind Turbulence

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Effect of Correlations on the Exponents for the Power-Law Distributions in Self-Organized Criticality

Communications in Theoretical Physics ◽

10.1088/0253-6102/58/2/25 ◽

2012 ◽

Vol 58 (2) ◽

pp. 313-316 ◽

Cited By ~ 1

Author(s):

Yong-Ju Deng ◽

Hua Zheng ◽

Chun-Bin Yang

Keyword(s):

Power Law ◽

Self Organized ◽

Self Organized Criticality ◽

Power Law Distributions

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Statistical analysis on X-ray flares from the nucleus and HST-1 knot in the M87 jet

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stz2302 ◽

2019 ◽

Vol 489 (2) ◽

pp. 2685-2693

Author(s):

Shenbang Yang ◽

Dahai Yan ◽

Benzhong Dai ◽

Pengfei Zhang ◽

Qianqian Zhu ◽

...

Keyword(s):

Magnetic Reconnection ◽

Power Law ◽

Physical Origin ◽

Flare Event ◽

X Ray ◽

Self Organized ◽

Peak Intensity ◽

Similar Index ◽

Self Organized Criticality ◽

Power Law Distributions

ABSTRACT The statistical properties of X-ray flares from two separate locations (nucleus and HST-1) in the M87 jet are investigated to reveal the physical origin of the flares. We analyse the archival Chandra data for M87, and identify 14 flares in the nucleus and nine flares in HST-1. The peak intensity (IP) and the flaring duration time (Tfl) for each flare are obtained. It is found that the distributions of both IP and Tfl for the nucleus obey a power law form with a similar index. A similar result is also obtained for HST-1, and no significant inconsistency between the nucleus and HST-1 is found for the indices. Similar to solar X-ray flares, the power-law distributions of the flare event parameters can be well explained by a self-organized criticality system, which are triggered by magnetic reconnection. Our results suggest that the flares from nucleus and HST-1 are possibly triggered by magnetic reconnection process. The consistent indices for the distributions of IP and Tfl in the nucleus and HST-1 indicate that the dimensions of the energy dissipation of the magnetic reconnection are identical in the two regions. A strong correlation between the flares in the two regions also suggests a similar physical origin for the flares.

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