Search for dissertations about: "Sun: granulation"

Found 2 swedish dissertations containing the words Sun: granulation.

  2. 1. Measuring the solar atmosphere

    Author : Jaime de la Cruz Rodríguez; Göran Scharmer; Dan Kiselman; Mats Carlsson; Gianna Cauzzi; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sun; Chromosphere; Spectropolarimetry; Solar observations; Spectral lines; Solar magnetic fields; Astronomy; Astronomi; Astronomy; astronomi;

    Abstract : The new CRISP filter at the Swedish 1-m Solar Telescope provides opportunities for observing the solar atmosphere with unprecedented spatial resolution and cadence. In order to benefit from the high quality of observational data from this instrument, we have developed methods for calibrating and restoring polarized Stokes images, obtained at optical and near infrared wavelengths, taking into account field-of-view variations of the filter properties. READ MORE

  4. 2. Stellar Surface Structures and the Astrometric Serach for Exoplnaets

    Author : Urban Eriksson; Lindegren Lennart; Kristianstad University; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Astrometry; astronomy;

    Abstract : Measuring stellar parallax, position and proper motion is the task of astrometry. With the development of new and much more accurate equipment, different noise sources are likely to affect the very precise measurements made with future instruments. READ MORE