Journal: Astronomy and Astrophysics

  • Publication
    The long bar as seen by the VVV Survey. II. Star counts
    Context. There is still some debate about the presence and the morphological properties of the long bar in the inner Galaxy. Aims: We investigate the...
  • Publication
    The long Galactic bar as seen by UKIDSS Galactic plane survey
    Context: Over the past decade there have been a series of results supporting the hypothesis of the existence of a long thin bar in the Milky Way with a half...
  • Publication
    The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
    The importance of long-period binaries for the formation and evolution of planetary nebulae is still rather poorly understood, which in part is due to the lack...
  • Publication
    The longest thermonuclear X-ray burst ever observed?. A BeppoSAX Wide Field Camera observation of 4U 1735-44
    A long flux enhancement, with an exponential decay time of 86 min, is detected in 4U 1735-44 with the BeppoSAX Wide Field Cameras. We argue that this is a type...
  • Publication
    The magnetic canopy above light bridges
    An analysis of high-resolution Stokes observations of two light bridges in active region NOAA 8990 is presented. The observations were recorded with the La...
  • Publication
    The magnetic field configuration of a solar prominence inferred from spectropolarimetric observations in the He i 10 830 Å triplet
    Context. Determining the magnetic field vector in quiescent solar prominences is possible by interpreting the Hanle and Zeeman effects in spectral lines...
  • Publication
    The magnetic flux of the quiet Sun internetwork as observed with the Tenerife infrared polarimeter
    Context: Observations made with the spectropolarimeter onboard the HINODE satellite have detected abundant horizontal magnetic fields in the internetwork quiet...
  • Publication
    The magnetic nature of umbra-penumbra boundary in sunspots
    Context. Sunspots are the longest-known manifestation of solar activity, and their magnetic nature has been known for more than a century. Despite this, the...
  • Publication
    The magnetic structure of pores and sunspots derived from Advanced Stokes Polarimeter data.
    We investigate the radial variation of the magnetic field structure across sunspots, pores and azimuth centers (ACs). We define ACs as magnetic structures of...