Institute for Advanced Study Astrophysics Seminar
Magnetar Oscillations
ABSTRACT: Quasi-Periodic Oscillations (QPOs) have been measured in the tails of
2 out of 3 SGR giant flares. An attractive explanation for these QPOs
is that they are due to torsional oscillations of the magnetar driving the
flare. This opens up a possibility to perform asteroseismology of neutron
stars.
I will present a theoretical overview of magnetar oscillations, and will
concentrate
on the non-trivial dynamics due to a strong hydro-magnetic coupling between
the elastic crust and the (multi)fluid core of the neutron star.
Date & Time
May 04, 2010 | 11:00am
Location
Bloomberg Hall Astrophysics LibrarySpeakers
Yuri Levin
Affiliation
Leiden University/Leiden Obsevatory