论文标题
暗物质粒子探险家的孔径对齐
Boresight Alignment of DArk Matter Particle Explorer
论文作者
论文摘要
暗物质粒子资源管理器（Dampe）可以在能量范围内测量$γ$ - 从几个GEV到大约10个TEV。每个$γ$ ray的方向是针对Dampe有效载荷的参考系统重建的。在本文中，我们采用了一种最大似然方法，并使用围绕几个明亮点状源的$γ$ ray数据来衡量和纠正与真实天体坐标系的角度偏差，即所谓的dampe有效载荷的``boresight aciplyment promightment''。作为检查，我们还估计了具有人工方向的某些模拟数据集的钻孔对齐，并获得一致的结果。时间依赖性的钻孔比对分析没有显示出参数显着变化的证据。
The DArk Matter Particle Explorer (DAMPE) can measure $γ$-rays in the energy range from a few GeV to about 10 TeV. The direction of each $γ$-ray is reconstructed with respect to the reference system of the DAMPE payload. In this paper, we adopt a maximum likelihood method and use the $γ$-ray data centered around several bright point-like sources to measure and correct the angular deviation from the real celestial coordinate system, the so called ``boresight alignment'' of the DAMPE payload. As a check, we also estimate the boresight alignment for some sets of simulation data with artificial orientation and obtain consistent results. The time-dependent boresight alignment analysis does not show evidence for significant variation of the parameters.
