Tuesday 25 Aug 2020: [Journal Club] Title: Exploring the Effect of Star-Disc Interaction on the Stellar Spin
Charlie Davey - University of Exeter
Previous work on magnetic star-disc interactions have discussed the processes involved in spinning up (accretion) or spinning down (e.g. magnetised winds) the star by bringing in/out angular momentum. The most recent studies show the importance of magnetospheric ejections, which are ejections of mass (and angular momentum) due to opening and closing of magnetic field lines and can either spin up or down the star depending on the case. I implemented for the first time these torque formulations into a spin evolution code and conducted a parameter study to see how varying accretion rate and magnetic field affect these torques in both slow and fast rotators.