Astrofísicas: Campos magnéticos

  • Publicación
    Penumbral thermal structure below the visible surface
    Context. The thermal structure of the penumbra below its visible surface (i.e., τ5 ≥ 1) has important implications for our present understanding of sunspots and...
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    Periodic Radio and Hα Emission from the L Dwarf Binary 2MASSW J0746425+200032: Exploring the Magnetic Field Topology and Radius Of An L Dwarf
    We present an 8.5 hr simultaneous radio, X-ray, UV, and optical observation of the L dwarf binary 2MASSW J0746425+200032. We detect strong radio emission...
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    Persistent magnetic vortex flow at a supergranular vertex
    Context. Photospheric vortex flows are thought to play a key role in the evolution of magnetic fields. Recent studies show that these swirling motions are...
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    Pervasive Linear Polarization Signals in the Quiet Sun
    This paper investigates the distribution of linear polarization signals in the quiet-Sun internetwork using ultra-deep spectropolarimetric data. We reduce the...
  • Publicación
    Phase diversity restoration of sunspot images. II. Dynamics around a decaying sunspot
    Two time series, taken simultaneously in the G-band and in white-light, and corrected for telescope aberrations and turbulence perturbations using the method of...
  • Publicación
    Photospheric downward plasma motions in the quiet Sun
    Context. We analyze spectropolarimetric data taken with the Hinode spacecraft in quiet solar regions at the disk center. Distorted redshifted Stokes V profiles...
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    Photospheric magnetic topology of a north polar region
    Aims: We aim to characterise the magnetism of a large fraction of the north polar region close to a maximum of activity, when the polar regions are reversing...
  • Publicación
    Physical Properties of Spicules from Simultaneous Spectropolarimetric Observations of He I and Ca II Lines
    We present full Stokes observations from SPINOR (Spectro-Polarimeter for INfrared and Optical Regions, at the Dunn Solar Telescope) in the Ca II infrared...
  • Publicación
    Physical Properties of the Solar Magnetic Photosphere under the MISMA Hypothesis. I. Description of the Inversion Procedure
    The paper describes an automatic inversion code to recover microstructured magnetic atmospheres (MISMAs) by fitting Stokes profiles. These solar model...