SATech-01 卫星上的龙虾眼天文成像仪
天体物理仪器与方法
2023-08-02 v1 高能物理 - 实验
仪器与探测器
摘要
龙虾眼天文成像仪（LEIA）是爱因斯坦探针（EP）任务宽视场 X 射线望远镜的探路者，于 2022 年 7 月 27 日随中国科学院 SATech-01 卫星成功发射。本文介绍 LEIA 仪器的设计与地面测试结果。利用最先进的微孔光学（MPO）技术，该 X 射线成像仪实现了 346 平方度（18.6 度 * 18.6 度）的宽视场（FoV）。由 36 片 MPO 芯片组成的光学组件用于聚焦入射 X 射线光子，四块大面阵互补金属氧化物半导体（CMOS）传感器（每块 6 cm * 6 cm）用作焦平面探测器。该仪器的角分辨率为点扩散函数中心焦斑的 4 - 8 角分（以半高全宽计），在 1 keV 处有效面积为 2 - 3 cm2，且视场内几乎所有方向均如此。探测通带为 0.5 - 4 keV 的软 X 射线，在 1000 秒观测下灵敏度为 2 - 3 * 10-11 erg s-1 cm-2（约 1 迷你蟹）。LEIA 总重 56 kg，功耗 85 W。卫星设计寿命 2 年，运行于 500 km 的太阳同步轨道，轨道周期 95 分钟。LEIA 通过在轨验证新型聚焦成像光学与 CMOS 传感器这两项 X 射线观测技术，并优化仪器参数的工作设置，为未来任务铺平道路。此外，尽管可用观测时间有限，LEIA 能够进行科学观测，在软 X 射线波段发现新暂现源并监测已知源。
引用
@article{arxiv.2305.14895,
title = {The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite},
author = {Z. X. Ling and X. J. Sun and C. Zhang and S. L. Sun and G. Jin and S. N. Zhang and X. F. Zhang and J. B. Chang and F. S. Chen and Y. F. Chen and Z. W. Cheng and W. Fu and Y. X. Han and H. Li and J. F. Li and Y. Li and Z. D. Li and P. R. Liu and Y. H. Lv and X. H. Ma and Y. J. Tang and C. B. Wang and R. J. Xie and Y. L. Xue and A. L. Yan and Q. Zhang and C. Y. Bao and H. B. Cai and H. Q. Cheng and C. Z. Cui and Y. F. Dai and D. W. Fan and H. B. Hu and J. W. Hu and M. H. Huang and Z. Q. Jia and C. C. Jin and D. Y. Li and J. Q. Li and H. Y. Liu and M. J. Liu and Y. Liu and H. W. Pan and Y. L. Qiu and M. Sugizaki and H. Sun and W. X. Wang and Y. L. Wang and Q. Y. Wu and X. P. Xu and Y. F. Xu and H. N. Yang and X. Yang and B. Zhang and M. Zhang and W. D. Zhang and Z. Zhang and D. H. Zhao and X. Q. Cong and B. W. Jiang and L. H. Li and X. B. Qiu and J. N. Sun and D. T. Su and J. Wang and C. Wu and Z. Xu and X. M. Yang and S. K. Zhang and Z. Zhang and N. Zhang and Y. F. Zhu and H. Y. Ban and X. Z. Bi and Z. M. Cai and W. Chen and X. Chen and Y. H. Chen and Y. Cui and X. L. Duan and Z. G Feng and Y. Gao and J. W. He and T. He and J. J. Huang and F. Li and J. S. Li and T. J. Li and T. T. Li and H. Q. Liu and L. Liu and R. Liu and S. Liu and N. Meng and Q. Shi and A. T. Sun and Y. M. Wang and Y. B. Wang and H. C. Wu and D. X Xu and Y. Q Yang and Y. Yang and X. S. Yu and K. X. Zhang and Y. L. Zhang and Y. H. Zhang and Y. T. Zhang and H. Zhou and X. C. Zhu and J. S. Cheng and L. Qin and L. Wang and Q. L. Wang and M. Bai and R. L. Gao and Z. Ji and Y. R. Liu and F. L. Ma and Y. J. Shi and J. Su and Y. Y. Tan and J. Z. Tong and H. T. Xu and C. B. Xue and G. F. Xue and W. Yuan},
journal= {arXiv preprint arXiv:2305.14895},
year = {2023}
}
备注
Accepted by RAA