标题： 钱德拉对射电星系 3C 452 气泡伴随的弥散硬X射线辐射的探测 显示英文标题

标题： A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452

摘要： 报告了一次对射电星系 3C 452 的 80 千秒钱德拉 ACIS 观测。 与星系团相关的弥散 X 射线发射被高统计显著性地检测到，同时还有宿主星系的 X 射线核。 弥散发射在 0.5–5 keV 能段的 ACIS 光谱可以用两组分模型来描述，包括来自宿主星系晕的软热等离子体辐射和硬非热幂律分量。 硬分量归因于由星系团喷流同步加速电子对宇宙微波背景光子的逆康普顿化，因为其光谱能量指数 0.68±0.28 与无线电同步加速电子指数 0.78 一致。 这些结果揭示了星系团内部显著的电子主导性。 电子被认为具有相对均匀的分布，而磁场则向星系团边缘压缩。 显示英文摘要

摘要： An 80 ksec Chandra ACIS observation of the radio galaxy 3C 452 is reported. A diffuse X-ray emission associated with the lobes has been detected with high statistical significance, together with the X-ray nucleus of the host galaxy. The 0.5--5 keV ACIS spectrum of the diffuse emission is described by a two-component model, consisting of a soft thermal plasma emission from the host galaxy halo and a hard non-thermal power-law component. The hard component is ascribed to the inverse Comptonization of cosmic microwave background photons by the synchrotron emitting electrons in the lobes, because its spectral energy index, 0.68+-0.28, is consistent with the radio synchrotron index, 0.78. These results reveal a significant electron dominance in the lobes. The electrons are inferred to have a relatively uniform distribution, while the magnetic field is compressed toward the lobe periphery.