What are the current studies that are being done of ' Casiopeia A 'star ?

Question

What are the current studies that are being done of ' Casiopeia A 'star ?

Answer 1

Here is a recent article: ^ Krause O, Birkmann SM, Usuda T, Hattori T, Goto M, Rieke GH, Misselt KA (2008). "The Cassiopeia A Supernova was of Type IIb". Nature 320 (5880): 1195–1197.

Working backwards on the reference will help you further.