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

Constraints on massive axion-like particles from X-ray observations of NGC 1275
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NGC 1275 X 射线观测对大质量轴子状粒子的约束

DOI:
10.1093/mnras/sty1591
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发表时间:
2017
影响因子:
4.8
通讯作者:
J. Conlon
J. Conlon
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Linhan Chen;J. Conlon

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如果类轴子粒子(axion-like particles,ALP)存在,光子可以在通过包含磁场的区域时转换为ALP。大型星系团的磁化的团内介质提供了一个在ALP光子转换方面非常有效的区域。位于星系团内的活动星系核(AGN)的X射线观测可用于搜索和约束ALP,因为光子-ALP转换将导致活动星系核的X射线谱中的能量依赖的准正弦调制。我们使用钱德拉观测英仙座星系团NGC 1275的中心活动星系核,将大质量ALP的界限设置为10 - 11 eV,扩展了以前使用该数据集来限制无质量ALP的工作。
If axion-like particles (ALPs) exist, photons can convert to ALPs on passage through regions containing magnetic fields. The magnetised 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, NGC1275, to place bounds on massive ALPs up to ma ∼ 10−11eV, extending previous work that used this dataset to constrain massless ALPs.
星系中的宇宙轴子背景传播
DOI: 10.1016/j.physletb.2015.12.058
发表时间: 2016
期刊: Physics Letters B
影响因子: 4.4
作者:
Day F
通讯作者: Day F