...measurements
Based on observations collected at the European Southern Observatory (La Silla, Chile; ESO programmes Nos. 47.7-045 and 49.7-029).
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...modulus
The mean magnetic field modulus 20#20 is the average over the visible stellar hemisphere of the modulus of the magnetic vector, weighted by the local emergent spectral line intensity. It is diagnosed from the relative wavelength shift of line components split by the magnetic field, as observed in unpolarized light.
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Copyright by the European Southern Observatory (ESO)
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