Tracing Inflow and Outflow in Young Stars : Some Novel Approaches

Séminaire IPAG de Tom Ray (DIAS) jeudi 15 octobre 2020, 11h00, IPAG seminar room

Outflows from young stellar objects (YSOs) are one of the most striking phenomena in Astrophysics. Aside from looking dramatic they may also be fundamental to the star formation process itself.

For example it appears they remove angular momentum from protoplanetary disks, thereby allowing accretion to occur.

Outflows can also generate turbulence that limits the efficiency of star formation and they may even affect planet formation.

Both accretion and outflow are thought to be mediated by magnetic fields but measuring these fields, has proven notoriously difficult.

Here we examine a number of novel diagnostics that can give us clues. Along the way we find evidence that outflows can generate low energy cosmic rays and even auroral emission.