论文标题
G11.2-0.3的Nustar观察结果
NuSTAR observations of G11.2-0.3
论文作者
论文摘要
我们在本文中介绍了G11.2-0.3中的脉冲星云的硬X射线视图及其中央Pulsar PSR PSR J1811-1925，如Nustar所见。我们将数据与Chandra进行补充，以进行更完整的图像，并确认具有光子指数伽玛= 2.1 +/- 0.1的壳中的硬，幂律分量的存在，我们将其归因于同步加速器的发射。我们对壳的成像观测结果显示，在较高能量下的半径略小，与Chandra结果一致，并且我们发现收缩是沿喷气方向增加的能量的函数，表明PWN中的电子流出可能比其他年轻pwne中的其他。将Nustar与积分组合结合，我们发现脉冲谱可以由伽马= 1.32 +/- 0.07的幂律拟合，最高300 keV，而没有曲率的证据。
We present in this paper the hard X-ray view of the pulsar wind nebula in G11.2-0.3 and its central pulsar PSR J1811-1925 as seen by NuSTAR. We complement the data with Chandra for a more complete picture and confirm the existence of a hard, power-law component in the shell with photon index Gamma = 2.1 +/- 0.1, which we attribute to synchrotron emission. Our imaging observations of the shell show a slightly smaller radius at higher energies, consistent with Chandra results, and we find shrinkage as a function of increased energy along the jet direction, indicating that the electron outflow in the PWN may be simpler than that seen in other young PWNe. Combining NuSTAR with Integral, we find that the pulsar spectrum can be fit by a power-law with Gamma=1.32 +/- 0.07 up to 300 keV without evidence of curvature.
