Thermal Relaxation of Very Small Solar Magnetic Structures in Intergranules: A Process That Produces Kilogauss Magnetic Field Strengths | Zendy

J. Sánchez Alméida | Zendy

Open Access

Thermal Relaxation of Very Small Solar Magnetic Structures in Intergranules: A Process That Produces Kilogauss Magnetic Field Strengths

Author(s) -

J. Sánchez Alméida

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/321532

Subject(s) - magnetic field , thermal , materials science , relaxation (psychology) , condensed matter physics , field (mathematics) , engineering physics , physics , meteorology , psychology , social psychology , mathematics , quantum mechanics , pure mathematics

The equilibrium configuration of very small magnetic fluxtubes in anintergranular environment automatically produces kG magnetic field strengths.We argue that such process takes place in the Sun and complements theconvective collapse (CC), which is traditionally invoked to explain theformation of kG magnetic concentrations in the solar photosphere. Inparticular, it can concentrate the very weak magnetic fluxes revealed by thenew IR spectro-polarimeters, for which the operation of the CC may havedifficulty. As part of the argument, we show the existence of solar magneticfeatures of very weak fluxes yet concentrated magnetic fields (some 3 x 10^{16}Mx and 1500 G).Comment: To appear in ApJ, v556 n1 Jul 20, 2001. 5 Fig

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