Astrofísicas: Campos magnéticos

  • Publicación
    Evershed flow observed in neutral and singly ionized iron lines
    The amplitudes of the Evershed flow are measured using pairs of carefully selected Fe i and Fe ii spectral lines that are close in wavelength and registered...
  • Publicación
    Evidence for Collisional Depolarization in the MgH Lines of the Second Solar Spectrum
    The analysis of the Hanle effect in solar molecular lines allows us to obtain empirical information on hidden, mixed-polarity magnetic fields at subresolution...
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    Evidence for Fine Structure in the Chromospheric Umbral Oscillation
    Novel spectropolarimetric observations of the He I multiplet are used to explore the dynamics of the chromospheric oscillation above sunspot umbrae. The results...
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    Evidence for Quasi-Isotropic Magnetic Fields from Hinode Quiet-Sun Observations
    Some recent investigations of spectropolarimetric observations of the Zeeman effect in the Fe I lines at 630 nm carried out with the Hinode solar space...
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    Evidence of Magnetic Accretion in an SW Sextantis Star: Discovery of Variable Circular Polarization in LS Pegasi
    We report on the discovery of variable circular polarization in the SW Sextantis star LS Pegasi. The observed modulation has an amplitude of ~0.3% and a period...
  • Publicación
    Evolution of active galactic nuclei broad-line region clouds: low- and high-ionization lines
    The formation of quasar broad-line region (BLR) clouds via thermal instability in the presence of Alfvén heating has been discussed by Gonçalves, Jatenco...
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    Evolution of Stokes V area asymmetry related to a quiet Sun cancellation observed with GRIS/IFU
    A quiet Sun magnetic flux cancellation event at the disk center was recorded using the Integral Field Unit (IFU) mounted on the GREGOR Infrared Spectrograph...
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    Explanation of the activity sensitivity of Mn I 5394.7 Å
    There is a long-standing debate why the Mn i 5394.7 Å line in the solar irradiance spectrum brightens more at higher activity than other photospheric lines. The...
  • Publicación
    Exploring spectropolarimetric inversions using neural fields: Solar chromospheric magnetic field under the weak-field approximation
    Context. Full-Stokes polarimetric datasets, originating from slit-spectrograph or narrow-band filtergrams, are routinely acquired nowadays. The data rate is...