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Magnetic and Kinetic Power Spectra as a Tool to Probe the Turbulent Dynamo View all abstracts by submitter

Valentyna Abramenko   Submitted: 2011-12-16 10:27

Generation and diffusion of the magnetic field on the Sun is a key mechanismresponsible for solar activity on all spatial and temporal scales - from thesolar cycle down to the evolution of small-scale magnetic elements in the quietSun. The solar dynamo operates as a non-linear dynamical process and is thoughtto be manifest in two types: as a global dynamo responsible for the solar cycleperiodicity, and as a small-scale turbulent dynamo responsible for theformation of magnetic carpet in the quiet Sun. Numerous MHD simulations of thesolar turbulence did not yet reach a consensus as to the existence of aturbulent dynamo on the Sun. At the same time, high-resolution observations ofthe quiet Sun from Hinode instruments suggest possibilities for the turbulentdynamo. Analysis of characteristics of turbulence derived from observationswould be beneficial in tackling the problem. We analyse magnetic and velocityenergy spectra as derived from Hinode/SOT, SOHO/MDI, SDO/HMI and the New SolarTelescope (NST) of Big Bear Solar Observatory (BBSO) to explore thepossibilities for the small-scale turbulent dynamo in the quiet Sun.

Authors: Valentyna Abramenko, Vasyl Yurchyshyn, Philip Googe
Projects: Hinode/SOT

Publication Status: accepted in ASP Conference Series
Last Modified: 2011-12-19 09:07
Go to main E-Print page  Response of the Photospheric Magnetic Field to the X2.2 Flare on 2011 February 15  A Parametric Study of Erupting Flux Rope Rotation. Modeling the ''Cartwheel CME'' on 9 April 2008  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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