论文标题
轨道校准到Insight-HXMT的点扩展功能
In-orbit Calibration to the Point-Spread Function of Insight-HXMT
论文作者
论文摘要
我们通过扫描观察到蟹的扫描观察到硬X射线调制望远镜的准直函数（PSF）的轨道校准。我们对理论上计算的几何PSF构建了经验调整。调整包含两个部分：旋转矩阵以调整准直仪的定向偏差和抛物面功能以纠正真实PSF的不均匀性。调整矩阵和抛物面功能的参数是通过在校准观察过程中以较低的扫描速度和较小间隔拟合扫描数据来确定的。 PSF校准后，在银河平面扫描调查中源定位的系统误差为0.010度，0.015度，低能望远镜（LE）分别为0.113度，中型能望远镜（ME）和高能量望远镜（HE）；同时，源通量估计的系统错误分别为1.8％，1.6％，2.7％，我和他和他分别为。
We make the in-orbit calibration to the point-spread functions (PSFs) of the collimators of the Hard X-ray Modulation Telescope with the scanning observation of the Crab. We construct the empirical adjustments to the theoretically calculated geometrical PSFs. The adjustments contain two parts: a rotating matrix to adjust the directional deviation of the collimators and a paraboloidal function to correct the inhomogeneity of the real PSFs. The parameters of the adjusting matrices and paraboloidal functions are determined by fitting the scanning data with lower scanning speed and smaller intervals during the calibration observations. After the PSF calibration, the systematic errors in source localization in the Galactic plane scanning survey are 0.010 deg, 0.015 deg, 0.113 deg for the Low-Energy Telescope (LE), the Medium-Energy telescope (ME) and the High-Energy telescope (HE), respectively; meanwhile, the systematic errors in source flux estimation are 1.8%, 1.6%, 2.7% for LE, ME and HE, respectively.
