@article{086ac1292cd844549dfb408ff3fccf0e,
title = "Spectropolarimetric Evidence for a Siphon Flow along an Emerging Magnetic Flux Tube",
abstract = "We study the dynamics and topology of an emerging magnetic flux concentration using high spatial resolution spectropolarimetric data acquired with the Imaging Magnetograph eXperiment on board the sunrise balloon-borne solar observatory. We obtain the full vector magnetic field and the line of sight (LOS) velocity through inversions of the Fe i line at 525.02 nm with the SPINOR code. The derived vector magnetic field is used to trace magnetic field lines. Two magnetic flux concentrations with different polarities and LOS velocities are found to be connected by a group of arch-shaped magnetic field lines. The positive polarity footpoint is weaker (1100 G) and displays an upflow, while the negative polarity footpoint is stronger (2200 G) and shows a downflow. This configuration is naturally interpreted as a siphon flow along an arched magnetic flux tube.",
keywords = "Sun: magnetic fields, Sun: photosphere, methods: observational, techniques: polarimetric",
author = "Requerey, {Iker S.} and Cobo, {B. Ruiz} and Iniesta, {J. C.Del Toro} and Su{\'a}rez, {D. Orozco} and Rodr{\'i}guez, {J. Blanco} and Solanki, {S. K.} and P. Barthol and A. Gandorfer and L. Gizon and J. Hirzberger and Riethm{\"u}ller, {T. L.} and Noort, {M. Van} and W. Schmidt and Pillet, {V. Mart{\'i}nez} and M. Kn{\"o}lker",
note = "Funding Information: The German contribution to SUNRISE and its reflight was funded by the Max Planck Foundation, the Strategic Innovations Fund of the President of the Max Planck Society (MPG), DLR, and private donations by supporting members of the Max Planck Society, which is gratefully acknowledged. The National Solar Observatory (NSO) is operated by the Association of Universities for Research in Astronomy (AURA) Inc. under a cooperative agreement with the National Science Foundation. The HAO contribution was partly funded through NASA grant number NNX13AE95G. This work was partly supported by the BK21 plus program through the National Research Foundation (NRF) funded by the Ministry of Education of Korea. Publisher Copyright: {\textcopyright} 2017. The American Astronomical Society. All rights reserved.",
year = "2017",
month = mar,
doi = "10.3847/1538-4365/229/1/15",
language = "English (US)",
volume = "229",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "1",
}