期刊
ASTROPHYSICAL JOURNAL
卷 847, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aa8b16
关键词
elementary particles; X-rays: galaxies: clusters; X-rays: individual (NGC1275)
资金
- European Research Council starting grant Supersymmetry Breaking in String Theory [307605]
- Royal Society University Research Fellowship
- European Research Council starting grant Supersymmetry Breaking in String Theory [307605]
- Royal Society University Research Fellowship
- European Research Council (ERC) [307605] Funding Source: European Research Council (ERC)
- STFC [ST/L000474/1] Funding Source: UKRI
Axion-like particles (ALPs) can induce localized oscillatory modulations in the spectra of photon sources passing through astrophysical magnetic fields. Ultra-deep Chandra observations of the Perseus cluster contain over 5 x 10(5) counts from the active galactic nucleus (AGN) of the central cluster galaxy NGC1275 and represent a data set of extraordinary quality for ALP searches. We use this data set to search for X-ray spectral irregularities from the AGN. The absence of irregularities at the O(30%) level allows us to place leading constraints on the ALP-photon mixing parameter g(a gamma gamma) less than or similar to 1.4-4.0 x 10(-12) GeV-1 for m(a) less than or similar to 10(-12) eV, depending on assumptions on the magnetic field realization along the line of sight.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据