Are black holes a serious threat to scalar field dark matter models?

被引：71

作者：

Barranco, Juan ^{[1
]}

Bernal, Argelia ^{[2
]}

Carlos Degollado, Juan ^{[1
]}

Diez-Tejedor, Alberto ^{[2
]}

Megevand, Miguel ^{[2
]}

Alcubierre, Miguel ^{[2
]}

Nunez, Dario ^{[2
]}

Sarbach, Olivier ^{[3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Astron, Circuito Exterior CU, Mexico City 04510, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Circuito Exterior CU, Mexico City 04510, DF, Mexico

[3] Univ Michoacana, Inst Fis & Matemat, Morelia 58040, Michoacan, Mexico

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 08期

关键词：

COSMOLOGICAL CONSTANT; BOSON STARS; SCHWARZSCHILD; EVOLUTION;

D O I：

10.1103/PhysRevD.84.083008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Classical scalar fields have been proposed as possible candidates for the dark matter component of the universe. Given the fact that supermassive black holes seem to exist at the center of most galaxies, in order to be a viable candidate for the dark matter halo a scalar field configuration should be stable in the presence of a central black hole, or at least be able to survive for cosmological time scales. In the present work we consider a scalar field as a test field on a Schwarzschild background, and study under which conditions one can obtain long-lived configurations. We present a detailed study of the Klein-Gordon equation in the Schwarzschild space-time, both from an analytical and numerical point of view, and show that indeed there exist quasistationary solutions that can remain surrounding a black hole for large time scales.

引用

页数：14

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