Self-gravitating system made of axions

被引：92

作者：

Barranco, J. ^{[1
]}

Bernal, A. ^{[1
]}

机构：

[1] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-14476 Golm, Germany

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 04期

关键词：

BOSON STARS; DENSITY PROFILES; HALOS;

D O I：

10.1103/PhysRevD.83.043525

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the inclusion of an axionlike effective potential in the construction of a self-gravitating system of scalar fields decreases its compactness when the value of the self-interaction coupling constant is increased. By including the current values for the axion mass m and decay constant f(a), we have computed the mass and the radius for self-gravitating systems made of axion particles. It is found that such objects will have asteroid size masses and radii of a few meters, thus a self-gravitating system made of axions could play the role of scalar mini-MACHOs and mimic a cold dark matter model for the galactic halo.

引用

页数：5

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