Driven by gravity, galaxies continuously grow through accretion
of smaller systems. Stellar streams are nice illustrations of this
hierarchical build-up, but the accreted stars quickly disperse. I
will present advanced dynamical models that can...
The conformal bootstrap equations in general dimension are an
infinite set of coupled non-linear equations in infinitely many
variables. According to the lore, the solutions of the full set of
equations correspond to physical CFTs. At the same time...
Data from ESA’s Gaia mission is already revolutionizing Galactic
astronomy, providing an unprecedented view of the Solar
neighborhood and beyond. However, while it provides us a great
opportunity to transform our understanding of the Milky Way,
it...
Higher symmetries in quantum field theory are novel concepts of
symmetry that involve extended operators such as Wilson lines in
gauge theory. We briefly review this formalism and then
discuss recent applications to particle physics, including
an...
Weak gravitational lensing imprints a coherent distortion onto
the observed shapes of distant galaxies. At the image level, this
gravitational shear is degenerate with the intrinsic shape of
galaxies, and the weak lensing signal-to-noise from an...
Tidal disruption events (TDEs) provide an exciting opportunity
to study supermassive black holes (SMBHs) in quiescent galaxies and
the stellar populations and dynamics in galactic nuclei. They test
the limits of black hole accretion by regularly...
