论文标题
从开普勒的超新星残留物检测硬X射线非热发射
Detection of the hard X-ray non-thermal emission from Kepler's supernova remnant
论文作者
论文摘要
我们报告了Kepler的Supernova Remnant的15--30 \ keV频段中的硬X射线发射的第一个可靠检测，其硬X射线检测器（HXD-PIN）在Suzaku上的硅PIN型半导体探测器（HXD-PIN）。从开普勒整个X射线发射区排放的检测显着性为7.17 $σ$。发现能量谱是由单个幂律函数很好地复制的，其光子指数为$ 3.13^{+1.85+0.69} _ { - 1.52-0.36} $，其中第一个和第二个错误分别代表90 \％ - 统计和系统错误。 X射线通量被确定为2.75 $ _ { - 0.77-0.82}^{+0.78+0.81} \ times10^{ - 12} $ \，erg \，erg \，s $^{ - 1} $ \，cm $^，cm $^{ - 2} $ 15-30-30-30-30-30-30-30-30-30-30 \，kev band，kev band，kev，kev，kev band。组合了3--30 \，kev频段中的宽带X射线频谱，其中X射线Suzaku/XIS频谱被组合在一起，表明非热组件没有明显的X射线滚动结构。 We find that the broad-band energy spectrum from the radio band, X-ray data of this work, and TeV upper limits can be reproduced with the one-zone leptonic model with a roll-off energy of $ν_{\mathrm{roll}}=1.0\times10^{17}$\,Hz and magnetic field strength of $B>40\,\mathrm{μG}$.使用软X射线频带中使用索引在数据中应用诊断方法表明，Kepler SNR中加速电子的最大能量受残余年龄的限制。该指示与单区性松性建模的结果一致。
We report the first robust detection of the hard X-ray emission in the 15--30\,keV band from Kepler's supernova remnant with the silicon PIN-type semiconductor detector of the hard X-ray detector (HXD-PIN) onboard Suzaku. The detection significance is 7.17 $σ$ for the emission from Kepler's entire X-ray emitting region. The energy spectrum is found to be well reproduced by a single power-law function with a photon index of $3.13^{+1.85+0.69}_{-1.52-0.36}$, where the first and second errors represent 90\%-statistical and systematic errors, respectively. The X-ray flux is determined to be 2.75$_{-0.77-0.82}^{+0.78+0.81}\times10^{-12}$\,erg\,s$^{-1}$\,cm$^{-2}$ in the 15--30\,keV band. The wider-band X-ray spectrum in the 3--30\,keV band, where the soft X-ray Suzaku/XIS spectrum is combined, shows that the non-thermal component does not have a significant X-ray roll-off structure. We find that the broad-band energy spectrum from the radio band, X-ray data of this work, and TeV upper limits can be reproduced with the one-zone leptonic model with a roll-off energy of $ν_{\mathrm{roll}}=1.0\times10^{17}$\,Hz and magnetic field strength of $B>40\,\mathrm{μG}$. Application of the diagnostic method using indices in the soft and hard X-ray band to the data indicates that the maximum energy of the accelerated electrons in Kepler's SNR is limited by the age of the remnant. The indication is consistent with the results of the one-zone leptonic modeling.
