We present EUV (150-800 Å) radiance measurements obtained with the SOHO/Coronal Diagnostic Spectrometer (CDS) during the period from 1996 to 2003. We complement the CDS measurements with simultaneous SOHO/EIT EUV images. We use the EIT center-to-limb variations to obtain an estimate of the EUV spectral irradiance of the 'quiet Sun' during 1996-2003. We discuss the evolution of the characteristics of the solar corona from minimum to maximum, and show how it becomes progressively hotter.
Memorie della Societa Astronomica Italiana
- Pub Date:
- Solar corona;
- EUV spectral irradiance