Gravitational waves as a new probe of Bose-Einstein condensate Dark Matter

被引：49

作者：

Dev, P. S. Bhupal ^{[1
,2
,3
]}

Lindner, Manfred ^{[1
]}

Ohmer, Sebastian ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[2] Washington Univ, Dept Phys, St Louis, MO 63130 USA

[3] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA

来源：

PHYSICS LETTERS B | 2017年 / 773卷

关键词：

INTERACTION CROSS-SECTION; LARGE-SCALE STRUCTURE; COSMOLOGICAL SIMULATIONS; EQUIVALENCE PRINCIPLE; CONSTRAINTS; GALAXIES; MILKY; EVOLUTION; DENSITY; AXIONS;

D O I：

10.1016/j.physletb.2017.08.043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

There exists a class of ultralight Dark Matter (DM) models which could give rise to a Bose-Einstein condensate (BEC) in the early universe and behave as a single coherent wave instead of individual particles in galaxies. We show that a generic BEC-DM halo intervening along the line of sight of a gravitational wave (GW) signal could induce an observable change in the speed of GWs, with the effective refractive index depending only on the mass and self-interaction of the constituent DM particles and the GW frequency. Hence, we propose to use the deviation in the speed of GWs as a new probe of the BEC-DM parameter space. With a multi-messenger approach to GW astronomy and/or with extended sensitivity to lower GW frequencies, the entire BEC-DM parameter space can be effectively probed by our new method in the near future. (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：219 / 224

页数：6

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