Astrophysical: Magnetic fields

  • Publication
    Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope
    We report the detection of diffuse radio emission which might be connected to a large-scale filament of the cosmic web covering a 8° × 8° area in the sky...
  • Publication
    Observations of Ellerman bomb emission features in He i D3 and He i 10 830 Å
    Context. Ellerman bombs (EBs) are short-lived emission features, characterised by extended wing emission in hydrogen Balmer lines. Until now, no distinct...
  • Publication
    On Kelvin-Helmholtz and parametric instabilities driven by coronal waves
    The Kelvin-Helmholtz instability has been proposed as a mechanism to extract energy from magnetohydrodynamic (MHD) kink waves in flux tubes, and to drive...
  • Publication
    On Spectropolarimetric Measurements with Visible Lines
    The ability of new instruments for providing accurate inferences of vector magnetic fields and line-of-sight velocities of the solar plasma depends a great deal...
  • Publication
    On the 3D structure of the magnetic field in regions of emerging flux .
    We explore the photospheric and chromospheric magnetic field in an emerging flux region. An image of the equivalent width of the He I 10830 Å red blended...
  • Publication
    On the Atomic Polarization of the Ground Level of Na I
    In a recent Letter, we showed the remarkable result that the atomic alignment of the levels P1/2 and S1/2 of the D1 line of Na I is practically destroyed in the...
  • Publication
    On the Diagnostic Potential of Hα for Chromospheric Magnetism
    We investigate the feasibility of measuring line-of-sight magnetic field strength in the solar chromosphere through Stokes polarimetry in the hydrogen Hα line...
  • Publication
    On the Distribution of Quiet-Sun Magnetic Fields at Different Heliocentric Angles
    This paper presents results from the analysis of high signal-to-noise ratio spectropolarimetric data taken at four heliocentric angles in quiet-Sun internetwork...
  • Publication
    On the fine structure of sunspot penumbrae. I. A quantitative comparison of two semiempirical models with implications for the Evershed effect
    Sunspot penumbrae exhibit prominent fine structure. Different interpretations of spectropolarimetric observations suggest different, sometimes contradictory...