Work

Complex structures of boson stars and anisotropic distribution of satellite galaxies

Year: 2024

Type: article

Abstract: We construct and explore the complex structures of boson stars, drawing inspiration from similar configurations of nontopological solitons in Minkowski space. These ``molecular states'' of boson stars have a multipolar structure and both positive and negative Noether charges within one star, and the opposite charges swap with time. Thanks to the gravitational attraction, they exist even in the case of a free scalar field. We also explore the effects of scalar self-interactions on these complex structures. We propose to use Galactic-scale charge-swapping boson stars as a potential solution to the problem of the observed anisotropic distribution of satellite galaxies.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.110.084069

Authors: Víctor Jaramillo, Shuang-Yong Zhou

Institutions: University of Science and Technology of China, Peng Huanwu Center for Fundamental Theory

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China

Awards: G1829777066, G2012042336, G4221106088