Constraints on massive axion-like particles from X-ray observations of NGC 1275

被引：12

作者：

Chen, Linhan ^{[1
]}

Conlon, Joseph P. ^{[2
]}

机构：

[1] Princeton Univ, Dept Phys, Frist Ctr 4108, Princeton, NJ 08544 USA

[2] Rudolf Peierls Ctr Theoret Phys, 1 Keble Rd, Oxford OX1 3NP, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 479卷 / 02期

基金：

欧洲研究理事会;

关键词：

galaxies: active; galaxies: individual: NGC 1275; galaxies: nuclei;

D O I：

10.1093/mnras/sty1591

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

If axion-like particles (ALPs) exist, photons can convert to ALPs on passage through regions containing magnetic fields. The magnetized intracluster medium of large galaxy clusters provides a region that is highly efficient at ALP-photon conversion. X-ray observations of active galactic nuclei (AGNs) located within galaxy clusters can be used to search for and constrain ALPs, as photon-ALP conversion would lead to energy-dependent quasi-sinusoidal modulations in the X-ray spectrum of an AGN. We use Chandra observations of the central AGN of the Perseus Cluster, NGC 1275, to place bounds on massive ALPs up to m(a) similar to 10(-11) eV, extending previous work that used this data set to constrain massless ALPs.

引用

页码：2243 / 2248

页数：6

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