Small-Scale Solar Magnetic Fields

High spatial-resolution spectropolarimetry of small-scale solar magnetic fields

We present a study of the structure and the dynamics of small-scale magnetic elements within solar plage regions. Spectropolarimetric observations with high spatial and spectral resolutions have been obtained for three iron lines with different sensitivities to magnetic field strength and temperature with the Gregory Coudé Telescope at the Observatorio del Teide/Tenerife. The main results are: ...

Jet Collimation by Small-Scale Magnetic Fields

A popular model for jet collimation is associated with the presence of a largescale and predominantly toroidal magnetic field originating from the central engine (a star, a black hole, or an accretion disk). Besides the problem of how such a large-scale magnetic field is generated, in this model the jet suffers from the fatal long-wave mode kink magnetohydrodynamic instability. In this paper we...

Generation of Alfvén Waves by Small-Scale Magnetic Reconnection in Solar Spicules

Alfvén waves dissipation is an extensively studied mechanism for the coronal heating problem. These waves can be generated by magnetic reconnection and propagated along the reconnected field lines. Here, we study the generation of Alfvén waves at the presence of both steady flow and sheared magnetic field in the longitudinally density stratified of solar spicules. The initial flow is assumed to...

Numerical analyses of self-generated magnetic fields with very small scale in solar corona

We numerically study the collapse behavior of selfgenerated magnetic fields described by nonlinear coupling equations. The results show that magnetic fields self-generated by transverse pumping plasmons may collapse, leading to an enhancement of the magnetic field of up to 250 – 500 Gauss in the range around 0.02 – 0.03 km, which corresponds to the inferred inhomogeneity small-scale fields in b...

Solar Magnetic Fields