The department of Physics and Astronomy was formed in January 2010 by merging the former department of Physics and Astronomy with the department of Physics and Materials Science.
The department of Physics and Astronomy has assignments within three main areas; education, research and cooperation with society, carried out within Applied nuclear physics, Astronomy and space physics , High Energy Physics, Ion Physics, Materials Physics, Materials Theory, Molecular and Condensed Matter Physics,
Nuclear Physics, Physics Education Research and Theoretical physics.
You find us at the Ångström laboratory in Uppsala.
A deeper look on thick discs using data from the Spitzer Survey of Stellar Structure in Galaxies (S4G)
Thick discs are disc-like components with a scale height larger than that of the classical discs. They are most easily detected in close to edge-on galaxies in which they appear as a roughly exponential excess of light which appears a few thin disc scale heights above the midplane. Their origin has been considered mysterious until recently and several formation theories have been proposed. Unveiling the origin of thick discs is important for understanding galaxy evolutionary processes.
I will review the results we obtained on thick discs using data from the S4G:
1) Thick discs are much more massive than previously thought. This advocates for an in situ origin of thick discs at high redshift and for them being a reservoir of missing baryons.
Abstract: We'll discuss a naive approach to T-duality and mirror
symmetry when the fundamental group of the manifold is not commutative
and the mirror pair has different topology. Correlators in this setting
exhibit complicated singular structure (as opposed to the rational or
logarithmic examples in Tori). We'll argue that you can exhibit
explicitly mirror symmetry at the algebraic level, without solving the
equations of motion and we'll sketch what sort of algebraic structure is
behind this kind of duality. This is joint work with M. Aldi.