论文标题
X射线搜索超级明星簇的轴
X-ray Searches for Axions from Super Star Clusters
论文作者
论文摘要
轴可能在恒星岩心内部丰富产生，然后在银河磁场中转换成可观察到的X射线。我们专注于Quintuplet和Westerlund 1 Super Star Clusters，它们拥有大量热，包括狼射线星的热星；这些恒星通过轴 - 光子耦合有效产生轴。我们使用银河磁场模型从这些簇发出的轴上计算局部预期的X射线通量。然后，我们将轴突模型预测与档案核光谱望远镜阵列（Nustar）数据相结合，从10-80 keV到寻找轴的证据。我们没有发现轴的显着证据，并限制了轴 - 光子耦合$ g_ {aγγ} \ Lessim 3.6 \ times 10^{ - 12} $ gev $^{ - 1} $ for 95 \％\％\％\％cpusitians $ mass $ m_a \ lisssim 5 \ lissim 5 \ times 10^{ - 11} $ ev。
Axions may be produced in abundance inside stellar cores and then convert into observable X-rays in the Galactic magnetic fields. We focus on the Quintuplet and Westerlund 1 super star clusters, which host large numbers of hot, young stars including Wolf-Rayet stars; these stars produce axions efficiently through the axion-photon coupling. We use Galactic magnetic field models to calculate the expected X-ray flux locally from axions emitted from these clusters. We then combine the axion model predictions with archival Nuclear Spectroscopic Telescope Array (NuSTAR) data from 10 - 80 keV to search for evidence of axions. We find no significant evidence for axions and constrain the axion-photon coupling $g_{aγγ} \lesssim 3.6 \times 10^{-12}$ GeV$^{-1}$ for masses $m_a \lesssim 5 \times 10^{-11}$ eV at 95\% confidence.
