Bridges between helioseismological and asteroseismological inference

Abstract

Exactly eighty years ago, a very young Yehudi Menuhin was invited by Bruno Walter to perform Beethoven's violin concerto with the Berlin Philharmonic Orchestra. Walking through the streets of Berlin he was unsure of his way, and asked a passer-by how he could get to the Konzerthaus. The man looked at him, looked down at the violin case that Yehudi was carrying, and said: `Practise, young man, practise'. It was with such advice in their minds, I am sure, that Margarida and Michael have asked me to try to build bridges between helioseismology and asteroseismology. Asteroseismology is new and fresh, and the young scientists who are entering the subject should be full of the expectation of the delights of discovery of untrodden ground. Where should they tread? They should be guided, perhaps, by our mature, well practised, experiences with the Sun.