Seminars / Webinars
Tuesday 7 December 2021, 12:00
Modeling the Galactic disk in the age of Gaia
Ivan Minchev
Leibniz-Institut für Astrophysik Potsdam (AIP), Germany
Abstract:
With the second Gaia data release it has become clear that the Milky Way disc is not in a stationary state, as often assumed in the past. An out-of-equilibrium disc makes it particularly difficult to interpret observations, as it implies strong time-dependent phenomena. The new data has opened up a number of questions: Is the disc ringing from a single (e.g., the Sagittarius dwarf galaxy) or multiple recent mergers? Is it wobbling due to internal or external perturbations? Is the central bar long and slow or short and fast? Is the geometric thick disc flaring? In this talk I will review our best understanding of the rich Galactic disc phase-space structure and will discuss how it can be linked to the disc’s present state and past evolution with the help of state-of-the-art simulations.
Past webinars are available here
Past Seminars
| Date | Speaker | Title |
| 30 Nov 2021 | Edoardo Legnaro Research Center for Astronomy and Applied Mathematics of the Academy of Athens and University of Thessaloniki |
Analytic Theory for Secular Lunisolar Resonances |
| 9 Nov 2021 | Dimitri A. Gadotti ESO – European Southern Observatory |
Nuclear discs in external galaxies and the Milky Way: building "bulges" without mergers ( Watch here) |
| 26 Oct 2021 | Demosthenes Kazanas NASA Goddard Space Flight Center, Corresponding Member of the Academy of Athens |
Gravity beyond Einstein? Yes, but in which direction? ( Watch here) |
| 13 Jul 2021 | Dimitris Christodoulou University of Massachusetts |
Major-Body Clustering in the Solar System ( Watch here) |
| 24 Jun 2021 | Panos A. Patsis Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Building blocks of 3D, X-shaped bulges and thick spirals ( Watch here) |
| 8 Jun 2021 | George Contopoulos Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Μια συνοπτική έκθεση της Φιλοσοφίας της Φυσικής και των Μαθηματικών ( Διαθέσιμη μαγνητοσκοπημένη) |
| 1 Jun 2021 | Christos Efthymiopoulos Department of Mathematics Tullio Levi-Civita, University of Padua (Work in collaboration with Rita Mastroianni) |
Secular dynamics for exoplanetary systems with two planets in mutually inclined orbits ( Watch here) |
| 13 May 2021 | Athanasios C. Tzemos Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Born's Rule in the case of two entangled Bohmian qubits
( Watch here) |
| 22 Apr 2021 | Costis Gontikakis Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Study of the emission measure during a solar flare observed with IRIS spectrograph ( Watch here) |
A list of all previous seminars from 2008 to 2020 is available here.
