تقرير
Spectropolarimetric evidence for a siphon flow along an emerging magnetic flux tube
| العنوان: | Spectropolarimetric evidence for a siphon flow along an emerging magnetic flux tube |
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| المؤلفون: | Requerey, Iker S., Cobo, B. Ruiz, Iniesta, J. C. Del Toro, Suárez, D. Orozco, Rodríguez, J. Blanco, Solanki, S. K., Barthol, P., Gandorfer, A., Gizon, L., Hirzberger, J., Riethmüller, T. L., van Noort, M., Schmidt, W., Pillet, V. Martínez, Knölker, M. |
| سنة النشر: | 2016 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | 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 polarity 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. Comment: Accepted for publication in ApJS |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4365/229/1/15 |
| URL الوصول: | http://arxiv.org/abs/1611.06732 |
| رقم الأكسشن: | edsarx.1611.06732 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4365/229/1/15 |
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