Magnetic relaxation in ICM bubbles and the magnetic flux problem in star formation
by
Jonathan Braithwaite(Bonn University)
→
Europe/Stockholm
FA31
FA31
Description
In various astrophysical situations a volume of magnetised plasma is
first stirred by turbulent motions and then allowed to relax without
outside influence. For instance, various types of radiative star, as
well as bubbles blown by AGN outflows. I present simulations of the
relaxation of magnetic field in these bubbles, which are observed as
x-ray cavities in the intergalactic medium, making predictions
concerning the nature of the magnetic field in such bubbles and how it
depends on the nature of the AGN jets/outflows which inflate them.
Finally, I look at a possible solution to the so-called "magnetic flux
problem" in star formation, where a protostar must somehow lose almost
all of the magnetic flux present in its parent cloud.
