Do the solar flares originating from an individual active region follow a random process or a memory-dependent correlation? | Zendy

Wang Hong Lei | Zendy; Chuan Li | Zendy; Feng Chen | Zendy; Shiying Zhong | Zendy; Zigong Xu | Zendy; P F Chen | Zendy

Open Access

Do the solar flares originating from an individual active region follow a random process or a memory-dependent correlation?

Author(s) -

Wang Hong Lei,

Chuan Li,

Feng Chen,

Shiying Zhong,

Zigong Xu,

P F Chen

Publication year - 2020

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/staa688

Subject(s) - physics , solar flare , flare , astrophysics , magnetohydrodynamics , magnetohydrodynamic drive , magnetohydrodynamic turbulence , binary number , statistical physics , astronomy , plasma , quantum mechanics , arithmetic , mathematics

We investigate the waiting time statistics of solar flares both in a flare-productive active region (AR 12673) of the solar cycle 24 and in a three-dimensional magnetohydrodynamic (MHD) simulated AR. The statistical models of a discrete random process and a continuous memory-dependent process are applied to interpret the waiting time distributions (WTDs) of solar flares. Our results indicate that the occurrence of a solar flare in an individual AR maintains a certain amount of memory, and probably arises from MHD turbulence rather than from intermittent avalanches in a self-organized criticality system. It differs from the occurrence of ‘super flares’ when treating the star/Sun as a single non-linear system.

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