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Related papers: Power-law Distribution of Solar-Cycle Modulated Co…

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We investigated the frequency distributions of flares with and without coronal mass ejections (CMEs) as a function of flare parameters (peak flux, fluence, and duration of soft X-ray flares). We used CMEs observed by the Large Angle and…

Astrophysics · Physics 2011-02-11 S. Yashiro , S. Akiyama , N. Gopalswamy , R. A. Howard

Waiting time distributions of solar flares and {\sl coronal mass ejections (CMEs)} exhibit power law-like distribution functions with slopes in the range of $\alpha_{\tau} \approx 1.4-3.2$, as observed in annual data sets during 4 solar…

Solar and Stellar Astrophysics · Physics 2021-06-14 Markus J. Aschwanden , Thierry Dudok de Wit

We study the time evolution of Solar Flares activity by looking at the statistics of quiescent times $\tau_{L}$ between successive bursts. The analysis of 20 years of data reveals a power law distribution with exponent $\alpha \simeq 2.4$…

Power-law frequency distributions of the peak flux of solar flare X-ray emission have been studied extensively and attributed to a system of self-organized criticality (SOC). In this paper, we first show that, so long as the shape of the…

Solar and Stellar Astrophysics · Physics 2016-10-12 You-ping Li , Li Feng , Ping Zhang , Siming Liu , Weiqun Gan

The observed powerlaw distributions of solar flare parameters can be interpreted in terms of a nonlinear dissipative system in the state of self-organized criticality (SOC). We present a universal analytical model of a SOC process that is…

Solar and Stellar Astrophysics · Physics 2012-01-13 Markus J. Aschwanden

We investigated some properties of coronal mass ejections (CMEs), such as speed, acceleration, polar angle, angular width, and mass, using data acquired by the Large Angle Spectrometric Coronagraph (LASCO) onboard the Solar and Heliospheric…

Solar and Stellar Astrophysics · Physics 2016-12-30 A. Compagnino , P. Romano , F. Zuccarello

We investigate the characteristics of the solar flares complex network. The limited predictability, non-linearity, and self-organized criticality of the flares allow us to study systems of flares in the field of the complex systems. Both…

Solar and Stellar Astrophysics · Physics 2017-10-04 Akbar Gheibi , Hossein Safari , Mohsen Javaherian

We present the statistical analysis of 33 flare-related coronal jets, and discuss the link between the jet and the flare properties in these events. We selected jets that were observed between 2010 and 2016 by the Atmospheric Imaging…

Solar and Stellar Astrophysics · Physics 2020-02-12 Sophie Musset , Mariana Jeunon , Lindsay Glesener

Power law size distributions are the hallmarks of nonlinear energy dissipation processes governed by self-organized criticality. Here we analyze 75 data sets of stellar flare size distributions, mostly obtained from the {\sl Extreme…

Solar and Stellar Astrophysics · Physics 2022-01-19 Markus J. Aschwanden , Manuel Guedel

The distribution of times $\Delta t$ between coronal mass ejections (CMEs) in the Large Angle and Spectrometric Coronagraph (LASCO) CME catalog for the years 1996-2001 is examined. The distribution exhibits a power-law tail $\propto (\Delta…

Astrophysics · Physics 2015-06-24 M. S. Wheatland

We extend a previous statistical solar flare study of 155 GOES M- and X-class flares observed with AIA/SDO (Aschwanden 2012) to all 7 coronal wavelengths (94, 131, 171, 193, 211, 304, 335 \ang) to test the wavelength-dependence of scaling…

Solar and Stellar Astrophysics · Physics 2015-06-17 Markus J. Aschwanden , Jie Zhang , Kai Liu

Context. Solar active regions are known to have jets. These jets are associated with heating and the release of particles into the solar wind. Aim. Our aim is to understand the spatial distribution of coronal jets within active regions to…

Solar and Stellar Astrophysics · Physics 2022-09-07 Jonas Odermatt , Krzysztof Barczynski , Louise K. Harra , Conrad Schwanitz , Säm Krucker

Observational evidence of the braiding of magnetic field lines has been reported. The magnetic reconnection within the loop (nanoflares) and with other loops (microflares) disentangle the field. The coronal field then reorganizes itself to…

Solar and Stellar Astrophysics · Physics 2019-01-30 S. Sen , A. Mangalam , R. Ramesh

It was recently pointed out that the distribution of times between solar flares (the flare waiting-time distribution) follows a power law, for long waiting times. Based on 25 years of soft X-ray flares observed by Geostationary Operational…

Astrophysics · Physics 2009-10-31 M. S. Wheatland

Numerous studies have analysed inferred power-law distributions between frequency and energy of impulsive events in the outer solar atmosphere in an attempt to understand the predominant energy supply mechanism in the corona. Here, we apply…

Solar and Stellar Astrophysics · Physics 2020-10-21 Nived Vilangot Nhalil , Chris J. Nelson , Mihalis Mathioudakis , J. Gerry Doyle , Gavin Ramsay

Nonlinear dissipative systems in the state of self-organized criticality release energy sporadically in avalanches of all sizes, such as in earthquakes, auroral substorms, solar and stellar flares, soft gamma-ray repeaters, and pulsar…

Solar and Stellar Astrophysics · Physics 2010-08-06 Markus J. Aschwanden

Nanoflares in quiet-Sun regions during solar cycle 24 are studied with the best available plasma diagnostics to derive their energy distribution and contribution to coronal heating during different levels of solar activity. Extreme…

Solar and Stellar Astrophysics · Physics 2022-05-25 Stefan Purkhart , Astrid M. Veronig

The nature of quasi-periodic pulsations in solar and stellar flares remains debated. Recent work has shown that power-law-like Fourier power spectra, also referred to as 'red' noise processes, are an intrinsic property of solar and stellar…

Solar and Stellar Astrophysics · Physics 2015-06-23 A. R. Inglis , J. Ireland , M. Dominique

We analyze the occurrence frequency distributions of peak fluxes $P$, total fluxes $E$, and durations $T$ of solar flares over the last three solar cycles (during 1980--2010) from hard X-ray data of HXRBS/SMM, BATSE/CGRO, and RHESSI. From…

Solar and Stellar Astrophysics · Physics 2012-01-13 Markus J. Aschwanden

The original concept of self-organized criticality (Bak et al.~1987), applied to solar flare statistics (Lu and Hamilton 1991), assumed a slow-driven and stationary flaring rate, which warrants time scale separation (between flare durations…

Solar and Stellar Astrophysics · Physics 2020-01-08 Markus J. Aschwanden
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