Asymptotics in astrophysics iTHEMS workshop
The asymptotics in astrophysics iTHEMS workshop will bring together physicists and mathematicians who work with asymptotics and perturbation theory techniques (Bender, C., Orszag, S., Advanced Mathematical Methods for Scientists and Engineers, 1978) across cosmology, high energy physics, quantum gravity, solar physics.
In astrophysics, asymptotics and perturbation theory has been applied to determine the eigenfrequencies of simplified stellar models (Unno, W. ; Osaki, Y. ; Ando, H. ; Shibahashi, H., Nonradial oscillations of stars, 1979). By observing frequencies associated with periodic changes in brightness of stars, the convective properties, rotation speeds of the stellar interior can be determined. This technique, called asteroseismology (The Kavli Prize 2022 in Astrophysics, The Crafoord Prize in Astronomy 2024) was a remarkable breakthrough, given that stars are completely opaque at their surface.
Topics for overview or contributed talks
- Computing black hole quasi normal modes via WKB method and related asymptotic techniques
- Use of WKB approximation in deriving buoyancy supported stellar eigenmodes (internal gravity waves) and dispersion relations
- internal gravity wave transport in core-collapse supernovae progenitors
- Solar eigenmodes and magnetic fields in helioseimology
- Asymptotics in hydrodynamics solvers: reducing time resolution requirements for low Mach number, compressible flow
- Mathematica for perturbations in the WKB approximation
+ more ....
Organisers
Christy Kelly (iTHEMS)
Masazumi Honda (iTHEMS)
Lucy McNeill (iTHEMS) *contact at lucy . mcneill - @ - riken.jp
Ryo Namba (iTHEMS)
Naritaka Oshita (Kyoto U)
