Astrophysical: Magnetic fields

  • Publication
    Polar Field Reversal Observations with Hinode
    We have been monitoring yearly variation in the Sun's polar magnetic fields with the Solar Optical Telescope aboard Hinode to record their evolution and...
  • Publication
    Polarimetric Diagnostics of Unresolved Chromospheric Magnetic Fields
    For about a decade, spectropolarimetry of He I λ10830 has been applied to the magnetic diagnostics of the solar chromosphere. This resonance line is very...
  • Publication
    Polarimetric Littrow Spectrograph - instrument calibration and first measurements
    We present first measurements and the calibration procedure for the Polarimetric Littrow Spectrograph (POLIS) operated at the Vacuum Tower Telescope on Tenerife...
  • Publication
    Polarimetric Measurements of Sunspots
    Making emphasis on observations that have included some type of polarization analysis, I concentrate on two subjects. First, the vector magnetic field...
  • Publication
    Polarimetry toward the IRAS Vela Shell. I. The Catalog
    We have obtained linear polarization measurements of stars along the western side of the IRAS Vela Shell toward HD 62542. From 16 CCD fields distributed along...
  • Publication
    Polarimetry toward the IRAS Vela Shell. II. Extinction and Magnetic Fields
    We explore correlations between visual extinction and polarization along the western side of the Infrared Astronomical Satellite (IRAS) Vela Shell using a...
  • Publication
    Polarimetry toward the Musca Dark Cloud. I. The Catalog
    We have used CCD imaging polarimetry to obtain linear polarization measurements of background stars toward the filamentary Musca dark cloud. We present a...
  • Publication
    Polarisation and magnetic fields in cool stars and the Sun. A session in memory of Meir Semel
    Astrophysical plasmas and magnetic fields are inextricably coupled to each other. But magnetic fields are elusive; they cannot be fully characterized with...
  • Publication
    Polarization : Proving ground for methods in radiative transfer.
    Polarization of solar lines arises due to illumination of radiating atom by anisotropic (limb darkened/brightened) radiation. Modelling the polarized spectra of...