Title: Testing gravity in interacting galaxies

Speaker: Xufen Wu

Abstract: This talk examines the gravitational dynamics in interacting galaxies, focusing on collisional ring galaxies (CRGs) formation. We explore how progenitor galaxy structures and instabilities influence CRG emergence and compare the formation conditions under modified Newtonian gravity versus Newtonian gravity. Additionally, we discuss the external field effect's role in galaxy asymmetry, contrasting it with satellite galaxy morphologies from the TNG50 simulation. Our analysis highlights the intricacies of gravitational interactions and the need for a refined understanding of gravity in galaxy dynamics.

Bio:

2001-2005: B.Sc. in Astrophysics, Department of Astronomy and Applied Physics, University of Science and Technology (USTC) of China.
2006-2010: Ph.D. in Astronomy, School of Physics and Astronomy, University of St Andrews, St Andrews, UK.
2010-2011: Postdoc fellow at Max-Planck-Institut für extraterrestrische Physik, Garching, Germany.
2012-2013: Alexander von Humboldt Postdoctoral fellow at Argelander-Institut für Astronomie, Universität Bonn, Germany.
2014-2018: Associate research fellow in Department of Astronomy, USTC.
2018-now : Associate professor in Department of Astronomy, USTC.

Time: 14:00-15:00, 11/Dec, Wednesday
Venue: Room 506 (Large seminar room), Department of Astronomy

You can also access the colloquium via :

https://www.koushare.com/space/329883/live-series/4614