Accretion Processes: Old and New Perspectives

Seminar Date: 
21 Feb 2013 - 14:00 to 15:00
Speaker: 
Colin McNally
Niels Bohr Institute

Stellar accretion processes, those processes which satisfy the need to transfer mass onto a forming and then young star, set the framework in which solar systems form. Astrophysical conceptions of these processes have been developed from a combination of physical inevitability, observational need, and the mathematical limitations of their times. I will briefly review traditional views of disks, and then highlight concepts in magnetized and turbulent accretion which are changing our views of how accretion proceeds and what may be inevitable in the processing of protoplanetary solids in this context.