Astrophysical: Magnetic fields

  • Publication
    Inference of the chromospheric magnetic field orientation in the Ca ii 8542 Å line fibrils
    Context. Solar chromospheric fibrils, as observed in the core of strong chromospheric spectral lines, extend from photospheric field concentrations suggesting...
  • Publication
    Inferring physical parameters in solar prominence threads
    Context. High resolution observations have permitted the resolution of solar prominences/filaments into sets of threads/fibrils. However, the values of the...
  • Publication
    Influence of Atomic Polarization and Horizontal Illumination on the Stokes Profiles of the He I 10830 Å Multiplet
    The polarization observed in the spectral lines of the He I 10830 Å multiplet carries valuable information on the dynamical and magnetic properties of plasma...
  • Publication
    Infrared and Optical Polarimetry around the Low-mass Star-forming Region NGC 1333 IRAS 4A
    We performed J- and R-band linear polarimetry with the 4.2 m William Herschel Telescope at the Observatorio del Roque de los Muchachos and with the 1.6 m...
  • Publication
    Inter-network magnetic fields observed with sub-arcsec resolution
    We analyze a time sequence of Inter-Network (IN) magnetograms observed at the solar disk center. Speckle reconstruction techniques provide a good spatial...
  • Publication
    Inter-Network magnetic fields observed during the minimum of the solar cycle
    We analyze a time series of high angular resolution magnetograms of quiet Sun Inter-Network (IN) magnetic fields. These magnetograms have a spatial resolution...
  • Publication
    Interaction of solar jets with filaments: Triggering of large-amplitude filament oscillations
    Context. Large-amplitude oscillations (LAOs) are often detected in filaments. Using multi-wavelength observations, their origin can be traced back to the...
  • Publication
    Intermittent Reconnection and Plasmoids in UV Bursts in the Low Solar Atmosphere
    Magnetic reconnection is thought to drive a wide variety of dynamic phenomena in the solar atmosphere. Yet, the detailed physical mechanisms driving...
  • Publication
    Intermittent solar activity by an on-off dynamo.
    We show that the alteration between intervals of cyclic activity and grand minima like the Maunder minimum in the 17th century, which is characteristic for the...