Dear “loops” friends,

 

You might be interested in the paper that Spiro and I just published concerning the role of turbulence in forming the current sheets that spawn nanoflares in the magnetically closed corona: 

 

http://journal.frontiersin.org/article/10.3389/fspas.2021.662861/full?&utm_source=Email_to_authors_&utm_medium=Email&utm_content=T1_11.5e1_author&utm_campaign=Email_publication&field=&journalName=Frontiers_in_Astronomy_and_Space_Sciences&id=662861

We argue that the sheets form primarily from other processes, unrelated to turbulence. Localized temporary bursts of turbulence may nonetheless be generated when the sheets reconnect.

 

Abstract:

We argue that the magnetically closed corona evolves primarily quasi-statically, punctuated by many localized bursts of activity associated with magnetic reconnection at a myriad of small current sheets. The sheets form by various processes that do not involve a traditional turbulent cascade whereby energy flows losslessly through a continuum of spatial scales starting from the large scale of the photospheric driving. If such an inertial range is a defining characteristic of turbulence, then the magnetically closed corona is not a turbulent system. It nonetheless has a complex structure that bears no direct relationship to the pattern of driving.

 

Cheers,

Jim

 

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James A. Klimchuk

NASA Goddard Space Flight Center

Solar Physics Lab, Code 671

Bldg. 21, Rm. 158

Greenbelt, MD  20771

USA

 

Phone:  1-301-286-9060

Fax:      1-301-286-7194

E-mail:  James.A.Klimchuk@nasa.gov

Homepage:  http://science.gsfc.nasa.gov/sed/bio/james.a.klimchuk

 

No endorsement by NASA is implied for any correspondence related to my official role in professional organizations.

 

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