Spectropolarimetric evidence for a siphon flow along an emerging magnetic flux tube

6533b85bfe1ef96bd12bbf1b

RESEARCH PRODUCT

Spectropolarimetric evidence for a siphon flow along an emerging magnetic flux tube

B. Ruiz Cobo B. Ruiz Cobo Sami K. Solanki Sami K. Solanki J. Blanco Rodríguez M. Van Noort J. C. Del Toro Iniesta W. Schmidt D. Orozco Suárez Laurent Gizon Laurent Gizon M. Knölker Iker S. Requerey Iker S. Requerey V. Martínez Pillet Peter Barthol Johann Hirzberger Achim Gandorfer Tino L. Riethmüller

subject

010504 meteorology & atmospheric sciences Polarity (physics)photosphere [Sun]FOS: Physical sciences Astrophysics polarimetric [Techniques]01 natural sciences Methods: observational 0103 physical sciences Sunrise Astrophysics::Solar and Stellar Astrophysics observational [Methods]010303 astronomy & astrophysics Sun: magnetic fields Solar and Stellar Astrophysics (astro-ph.SR)0105 earth and related environmental sciences Line (formation)Physics Solar observatory Polarity symbols Techniques: polarimetric Sun: photosphere Astronomy and Astrophysics Magnetic flux Magnetic field Astrophysics - Solar and Stellar Astrophysics Flow (mathematics)magnetic fields [Sun]Space and Planetary Science

description

©2017 The American Astronomical Society. All rights reserved.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.

year	journal	country	edition	language
2016-11-21

10.3847/1538-4365/229/1/15 http://hdl.handle.net/10261/147538

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