Journal: Astronomy and Astrophysics

  • Publication
    Nuclear molecular outflow in the Seyfert galaxy NGC 3227
    ALMA observations have revealed nuclear dusty molecular disks or tori with characteristic sizes 15-40 pc in the few Seyferts and low -luminosity AGN that have...
  • Publication
    Nuclear obscuration in LINERs. Clues from Spitzer/IRS spectra on the Compton thickness and the existence of the dusty torus
    Context. Most of the optically classified low-ionisation, narrow emission-line regions (LINERs) nuclei host an active galactic nucleus (AGN). However, how they...
  • Publication
    Numerical determination of the cutoff frequency in solar models
    Context. In stratified atmospheres, acoustic waves can only propagate if their frequency is higher than the cutoff value. The determination of the cutoff...
  • Publication
    Numerical modeling of lander interaction with a low-gravity asteroid regolith surface. II. Interpreting the successful landing of Hayabusa2 MASCOT
    Context. The JAXA asteroid sample return mission Hayabusa2 reached its target (162173) Ryugu in June 2018 and released the European (CNES-DLR) lander MASCOT in...
  • Publication
    Numerical modelling of spectral line asymmetries in photospheric structures. I. Quiet Sun.
    Modelling of asymmetries in spectral lines with different formation heights (K I 7699, Fe I 5576 and Fe I 5635A), observed in the quiet Sun at the disk center...
  • Publication
    Numerical modelling of spectral line asymmetries in photospheric structures. II. Plage regions.
    A numerical code has been developed for modelling the asymmetries in three spectral lines (K I 7699, Fe I 5576 and Fe I 5635A) formed at different photospheric...
  • Publication
    Numerical simulations of exocomet transits: Insights from β Pic and KIC 3542116
    In recent years, the topic of existence and exploration of exocomets has been gaining increasing attention. The asymmetrical decrease in the star's brightness...
  • Publication
    Numerical simulations of kinematic dynamo action
    Numerical simulations of kinematic dynamo action in steady and three-dimensional ABC flows are presented with special focus on the difference in growth rates...
  • Publication
    Numerical simulations of large-amplitude oscillations in flux rope solar prominences
    Context. Large-amplitude oscillations (LAOs) of solar prominences are a very spectacular, but poorly understood, phenomena. These motions have amplitudes larger...