Equations of boson-fermion star and the basic equation discussions under Newtonian approximation

9 Sep 2018, 15:10
20m
Talk

Speaker

Zhifu Gao (Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150, Science 1-Street, Urumqi, Xinjiang 830011, China)

Description

There is accumulating evidence that scalar fields may exist in nature. The gravitational collapse of a boson cloud would lead to the formation of a boson star just like white dwarfs and neutron star. In generally, as one of candidates of dark matter, a boson star holds a stable configuration and has deserved intensive attention and extensive researches in the past 50 years. At first, we examined the properties of a complex-scalar–field boson star, and analyze the ground state solutions, then analyzed the configuration of a star composed of bosons and fermions, and gave coupling equations. At last, we considered the hydrostatic equilibrium equation of the boson-fermion star, and gave the virial equation with different orders and investigated how scale fields impact the virial equation.

Primary authors

Zhifu Gao (Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150, Science 1-Street, Urumqi, Xinjiang 830011, China) Xiangdong Li (Department of Astronomy, Institute of physics, University of Science and Technology of China, Hefei, Anhui, ChinaDepartment of Astronomy and Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Jiangsu 210046, China) Cixing Chen (Department of Astronomy, Institute of physics, University of Science and Technology of China, Hefei, Anhui, China) Na Wang (Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150, Science 1-Street, Urumqi, Xinjiang 830011, China)

Presentation Materials