We will review the relevance of historical observations for current astrophysical problems, in particular for the reconstruction of solar activity in the 17th century Maunder Minimium and the pre-telescopic time – as well as the study of historical supernovae in our Galaxy. Among other observations, we will discuss the strong 14-C variation around AD 775 detected in trees around the world and discuss possible causes like a nearby supernova, a Galactic gamma-ray burst, a solar super-flare, etc.
For more info: visit the Terra-Astronomy website: www.astro.uni-jena.de/index.php/terra-astronomy.html
Organization: M. Galametz
DAp