Spectropolarimetric Evidence for a Siphon Flow along an Emerging Magnetic Flux Tube

Bibcode
2017ApJS..229...15R
DOI
10.3847/1538-4365/229/1/15
Requerey, I. S.; Ruiz Cobo, B.; Del Toro Iniesta, J. C.; Orozco Suárez, D.; Blanco Rodríguez, J.; Solanki, S. K.; Barthol, P.; Gandorfer, A.; Gizon, L.; Hirzberger, J.; Riethmüller, T. L.; van Noort, M.; Schmidt, W.; Martínez Pillet, V.; Knölker, M.
Referencia bibliográfica

The Astrophysical Journal Supplement Series, Volume 229, Issue 1, article id. 15, 5 pp. (2017).

Fecha de publicación:
3
2017
Número de autores
15
Número de autores del IAC
2
Número de citas
5
Número de citas referidas
5
Descripción
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.
Proyectos relacionados
Imagen del Proyecto
Magnestismo Solar y Estelar
Los campos magnéticos son uno de los ingredientes fundamentales en la formación de estrellas y su evolución. En el nacimiento de una estrella, los campos magnéticos llegan a frenar su rotación durante el colapso de la nube molecular, y en el fin de la vida de una estrella, el magnetismo puede ser clave en la forma en la que se pierden las capas
Tobías
Felipe García
En ejecución
Tipo
Con árbitro
Física Solar (FS)
Métodos
Campos magnéticos
Técnicas

Te puede interesar

  • Con árbitro
    Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor: Multiwavelength observations and analysis of the progenitor
    We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (∼20 Mpc). We used gamma-ray observations performed with the first Large-Sized Telescope (LST-1) of the Cherenkov Telescope Array Observatory (CTAO) and optical observations with the Liverpool Telescope (LT) combined with data
    Abe, K. et al.

    Fecha de publicación:

    10
    2025
    Bibcode
    2025A&A...702A.125A
    Número de citas
    0
  • Con árbitro
    Revisiting symbiotic binaries with interferometry: II. New PIONIER data
    Symbiotic stars, which generally comprise a red giant and an accreting white dwarf, are excellent laboratories to understand mass transfer in long-period binaries. One of the fundamental questions is how mass is transferred from the red giant to the white dwarf. We used interferometric measurements made with the VLTI/PIONIER instrument, combined
    Boffin, Henri M. J. et al.

    Fecha de publicación:

    10
    2025
    Bibcode
    2025A&A...702A.151B
    Número de citas
    0
  • Con árbitro
    Testing the performance of cross-correlation techniques to search for molecular features in JWST NIRSpec G395H observations of transiting exoplanets
    Cross-correlations techniques offer an alternative method to search for molecular species in James Webb Space Telescope (JWST) observations of exoplanet atmospheres. In a previous article, we applied cross-correlation functions for the first time to JWST NIRSpec/G395H observations of exoplanet atmospheres, resulting in a detection of CO in the
    Esparza-Borges, Emma et al.

    Fecha de publicación:

    11
    2025
    Bibcode
    2025MNRAS.543.3456E
    Número de citas
    0