Emergence of Small-Scale Magnetic Loops in the Quiet Sun Internetwork
Abstract
We study the emergence of magnetic flux at very small spatial scales (less than 2 arcsec) in the quiet Sun internetwork. To this aim, a time series of spectropolarimetric maps was taken at disk center using the instrument SP/SOT on board Hinode. The LTE inversion of the full Stokes vector measured in the Fe I 6301 and 6302 A lines allows us to retrieve the magnetic flux and topology in the region of study. In the example presented here, the magnetic flux emerges within a granular structure. The horizontal magnetic field appears prior to any significant amount of vertical field. As time goes on, the traces of the horizontal field disappear while the the vertical dipoles drift -carried by the plasma motions- towards the surrounding intergranular lanes. These events take place within typical granulation timescales.
Keywords
Cite
@article{arxiv.0708.0844,
title = {Emergence of Small-Scale Magnetic Loops in the Quiet Sun Internetwork},
author = {R. Centeno and H. Socas-Navarro and B. Lites and M. Kubo and Z. Frank and R. Shine and T. Tarbell and A. Title and K. Ichimoto and S. Tsuneta and Y. Katsukawa and Y. Suematsu and T. Shimizu and S. Nagata},
journal= {arXiv preprint arXiv:0708.0844},
year = {2009}
}
Comments
9 pages (referee format), 3 figures. Accepted for publication in ApJ Letters