Seminar〝Constraining dark matter properties by orbital precession around the Galactic supermassive black hole〞

Star-UBB Seminar Series:- Constraining dark matter properties by orbital precession around the Galactic supermassive black hole

Theoretical models show that dark matter can concentrate near the Galactic supermassive black hole(SMBH). The dark matter distributing around the SMBH can provide significant gravitational effects to change the stellar orbits surrounding the SMBH. These effects can be simply manifested by the orbital precession angles of the stellar orbits. In this talk, the speaker will outline the methodology and describe how the properties of dark matter can be revealed by the orbital precession features.

時間:2022.11.03(四) 17:00~18:30
講者:陳文豪 博士(香港教育大學)


Scientific and Technological Advanced Research- Babeș-Bolyai University(Star-UBB) Seminar Series in Gravitation, Cosmology and Astrophysics

Presently a period of rapid and intense change are being witnessed in our understanding of the gravitational force, at a rate that is quickly increasing since the important observational discoveries of the late 1990s. With the advent of new observational techniques, the emergence of important cosmological and astrophysical paradigms can be seen that lead to a deep change in our understanding of the Universe. Astronomical observations strongly suggest that at large scales the force of gravity may not behave according to standard general relativity, and that a generalization of the gravitational action, either at the geometric level, or at the matter level, may be required for a full understanding of the gravitational interaction.

The goal of the present seminar is to bring Theoretical Gravitational Physics closer to the observations and experiments, and to discuss current topics in general relativity, high-energy physics, astrophysics and cosmology.