Astrophysical: Magnetic fields

  • Publication
    Cold, Supersonic Evershed Downflows in a Sunspot
    We report here on the discovery of supersonic Evershed downflows in the penumbra of a sunspot. These flows are shown to occur along spatially unresolved, very...
  • Publication
    Combining magneto-hydrostatic constraints with Stokes profile inversions. IV. Imposing ∇⋅B = 0 condition
    Context. Inferences of the magnetic field in the solar atmosphere by means of spectropolarimetric inversions (i.e., Stokes inversion codes) yield magnetic...
  • Publication
    Combining magneto-hydrostatic constraints with Stokes profiles inversions. II. Application to Hinode/SP observations
    Context. Inversion techniques applied to the radiative transfer equation for polarized light are capable of inferring the physical parameters in the solar...
  • Publication
    Combining magnetohydrostatic constraints with Stokes profiles inversions. I. Role of boundary conditions
    Context. Inversion codes for the polarized radiative transfer equation, when applied to spectropolarimetric observations (i.e., Stokes vector) in spectral lines...
  • Publication
    Comparing Submillimeter Polarized Emission with Near-infrared Polarization of Background Stars for the Vela C Molecular Cloud
    We present a large-scale combination of near-infrared (near-IR) interstellar polarization data from background starlight with polarized emission data at...
  • Publication
    Comparison of Magnetic Field Structures on Different Scales in and around the Filamentary Dark Cloud GF 9
    New visible polarization data combined with existing IR and FIR polarization data are used to study how the magnetic field threading the filamentary molecular...
  • Publication
    Comparison of Prestellar Core Elongations and Large-scale Molecular Cloud Structures in the Lupus I Region
    Turbulence and magnetic fields are expected to be important for regulating molecular cloud formation and evolution. However, their effects on sub-parsec to 100...
  • Publication
    Comparison of the thin flux tube approximation with 3D MHD simulations
    Context: The structure and dynamics of small vertical photospheric magnetic flux concentrations has been often treated in the framework of an approximation...
  • Publication
    Compressive sensing for spectroscopy and polarimetry
    We demonstrate, through numerical simulations with real data, the feasibility of using compressive sensing techniques for the acquisition of spectro...