The first results from the new instrument CRISP on the Swedish Solar Telescope (SST) are presented in an article by Göran Scharmer and coauthors. CRISP stands for CRisp Imaging SpectroPolarimeter and works in principle like a very narrow filter which also measures the polarisation of the light. By observing certain spectral lines one can thus obtain maps of the magnetic field's strength and direction on the solar surface as well as for example the temperature and the flows of the gas. The results presented in the article show how the magnetic field varies much stronger over small scales in the outer parts of the sunspot or penumbra than what one has previously been able to observe. Certain details also seem to support the theory that the structure of the penumbra is mainly shaped by convection - something that so far had been very controversial.

- These first results show what a goldmine CRISP is going to be for solar research in the coming years, says professor Göran Scharmer, director of the Royal Swedish Academy of Sciences' Institute for Solar Physics.

CRISP has been financed by a grant from the Marcus and Marianne Wallenberg Foundation.

Research article:
Spectropolarimetric Imaging of Penumbral Fine Structure Contact:

Göran Scharmer, Tel: 08-5537 8532, scharmer@astro.su.se