Looking for axion dark matter in dwarf spheroidal galaxies

被引：68

作者：

Caputo, Andrea ^{[1
]}

Pena Garay, Carlos ^{[2
,3
]}

Witte, Samuel J. ^{[1
]}

机构：

[1] Univ Valencia, CSIC, Inst Fis Corpuscular IFIC, Apartado Correos 22085, E-46071 Valencia, Spain

[2] UVEG, CSIC, I2SysBio, PO 22085, Valencia 46071, Spain

[3] Lab Subterraneo Canfranc, Estn De Canfranc 22880, Spain

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 08期

基金：

欧盟地平线“2020”;

关键词：

CP CONSERVATION; SEARCH; ANNIHILATION; DECAY;

D O I：

10.1103/PhysRevD.98.083024

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the extent to which the decay of cold dark matter axions can be probed with forthcoming radio telescopes such as the Square Kilometer Array (SKA). In particular, we focus on signals arising from dwarf spheroidal galaxies, where astrophysical uncertainties are reduced and the expected magnetic field strengths are such that signals arising from axion decay may dominate over axion-photon conversion in a magnetic field. We show that with similar to 100 hr of observing time, SKA could improve current sensitivity by 2-3 orders of magnitude-potentially obtaining sufficient sensitivity to begin probing the decay of cold dark matter axions.

引用

页数：6

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