
The CLASP experiment, motivated by theoretical investigations carried out at the IAC, opens a new research window in astrophysics by being able to measure polarization signals in two spectral lines of the solar ultraviolet radiation. The observed polarization provides information on the magnetic field and geometry of the plasma in the enigmatic transition region between the chromosphere and corona of the Sun. CLASP is an international project whose first results have just been published in the The Astrophysical Journal.
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