Astrophysical: Magnetic fields

  • Publication
    Simulations of Magnetoacoustic Pulsations in Atmospheres of Rapidly Oscillating Ap Stars
    Rapidly oscillating Ap (roAp) stars exhibit an astrophysically interesting combination of strong, dipolar-like magnetic fields and high-overtone p-mode...
  • Publication
    Simulations of the Biermann battery mechanism in two-fluid partially ionised plasmas
    Context. In the absence of an initial seed, the Biermann battery term of a non-ideal induction equation acts as a source that generates weak magnetic fields...
  • Publication
    Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs. III. X-ray, Radio, and Hα Activity Trends in M and L dwarfs
    As part of our on-going investigation into the magnetic field properties of ultracool dwarfs, we present simultaneous radio, X-ray, and Hα observations of three...
  • Publication
    Simultaneous Multiwavelength Observations of Magnetic Activity in Ultracool Dwarfs. I. The Complex Behavior of the M8.5 Dwarf TVLM 513-46546
    We present the first simultaneous radio, X-ray, ultraviolet, and optical spectroscopic observations of the M8.5 dwarf TVLM 513-46546, with a duration of 9 hr...
  • Publication
    Simultaneous Multiwavelength Observations of Magnetic Activity in Ultracool Dwarfs. II. Mixed Trends in VB 10 and LSR 1835+32 and the Possible Role of Rotation
    As part of our ongoing investigation of magnetic activity in ultracool dwarfs we present simultaneous radio, X-ray, UV, and optical observations of LSR1835+32...
  • Publication
    Simultaneous Visible and Infrared Spectropolarimetry of a Solar Internetwork Region
    We present the first simultaneous infrared (IR) and visible spectropolarimetric observations of a solar internetwork region. The Fe I lines at 6301.5, 6302.5...
  • Publication
    SiO maser polarization and magnetic field in evolved cool stars
    Context. Magnetic fields, photospheric and atmospheric dynamics can be involved in triggering the high mass loss observed in evolved cool stars. Previous works...
  • Publication
    Slow MHD oscillations in density structured coronal loops
    Aims.Signals of stationary slow modes have been detected in observational data and modelled through numerical computations, comparing these results with the...
  • Publication
    Small-scale flux emergence events observed by Sunrise/IMaX
    Thanks to the unprecedented combination of high spatial resolution (0''.2) and high temporal cadence (33 s) spectropolarimetric measurements, the IMaX...