Astrophysical: Magnetic fields

  • Publication
    Scattering Polarization and Hanle Effect in Stellar Atmospheres with Horizontal Inhomogeneities
    Scattering of light from an anisotropic source produces linear polarization in spectral lines and in the continuum. In the outer layers of a stellar atmosphere...
  • Publication
    Scattering Polarization of Hydrogen Lines in Weakly Magnetized Stellar Atmospheres. I. Formulation and Application to Isothermal Models
    Although the spectral lines of hydrogen contain valuable information on the physical properties of a variety of astrophysical plasmas, including the upper solar...
  • Publication
    Search and analysis of giant radio galaxies with associated nuclei (SAGAN). IV. Interplay with the Supercluster environment
    We investigated the prevalence of giant radio galaxies (GRGs), some of the largest structures powered by supermassive black holes, within supercluster...
  • Publication
    Search for gravitational waves from binary black hole inspirals in LIGO data
    We report on a search for gravitational waves from binary black hole inspirals in the data from the second science run of the LIGO interferometers. The search...
  • Publication
    Search for photospheric footpoints of quiet Sun transition region loops
    Context: The footpoints of quiet Sun Transition Region (TR) loops do not seem to coincide with the photospheric magnetic structures appearing in traditional low...
  • Publication
    Search for surface magnetic fields in Mira stars: first results on χ Cyg
    So far, surface magnetic fields have never been reported on Mira stars, while observational facilities allowing detection and measurement of weak surface fields...
  • Publication
    Search for torsional oscillations in isolated sunspots
    In this work we seek evidence for global torsional oscillations in alpha sunspots. We have used long time series of continuum intensity and magnetic field...
  • Publication
    Second solar spectrum of the Sr I 4607 Å line: depth probing of the turbulent magnetic field strength in a quiet region
    Aims.This paper is devoted to an interpretation of Quiet-Sun, spatially-resolved spectropolarimetric observations of the Hanle effect in terms of turbulent weak...
  • Publication
    Seismology of Standing Kink Oscillations of Solar Prominence Fine Structures
    We investigate standing kink magnetohydrodynamic (MHD) oscillations in a prominence fine structure modeled as a straight and cylindrical magnetic tube only...