Simulation Studies for the First Pathfinder of the CATCH Space Mission
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866911782907412480 |
|---|---|
| author | Huang, Yiming Zhang, Juan Tao, Lian Li, Zhengwei Zhao, Donghua Yin, Qian-Qing Wen, Xiangyang Xiao, Jingyu Zhang, Chen Zhang, Shuang-Nan Xiong, Shaolin Bu, Qingcui Cang, Jirong Cao, Dezhi Chen, Wen Ding, Siran Gao, Min Gao, Yang Hou, Shujin Jia, Liping Jin, Ge Li, Dalin Li, Jinsong Li, Panping Li, Yajun Liu, Xiaojing Ma, Ruican Pan, Xingyu Qi, Liqiang Rao, Jinhui Sun, Xianfei Tang, Qingwen Tang, Ruijing Wang, Yusa Xu, Yibo Yang, Sheng Yang, Yanji Yang, Yong Zhang, Xuan Zhang, Yueting Zhou, Heng Zhao, Kang Zhao, Qingchang Zhao, Shujie Zhao, Zijian |
| author_facet | Huang, Yiming Zhang, Juan Tao, Lian Li, Zhengwei Zhao, Donghua Yin, Qian-Qing Wen, Xiangyang Xiao, Jingyu Zhang, Chen Zhang, Shuang-Nan Xiong, Shaolin Bu, Qingcui Cang, Jirong Cao, Dezhi Chen, Wen Ding, Siran Gao, Min Gao, Yang Hou, Shujin Jia, Liping Jin, Ge Li, Dalin Li, Jinsong Li, Panping Li, Yajun Liu, Xiaojing Ma, Ruican Pan, Xingyu Qi, Liqiang Rao, Jinhui Sun, Xianfei Tang, Qingwen Tang, Ruijing Wang, Yusa Xu, Yibo Yang, Sheng Yang, Yanji Yang, Yong Zhang, Xuan Zhang, Yueting Zhou, Heng Zhao, Kang Zhao, Qingchang Zhao, Shujie Zhao, Zijian |
| contents | The Chasing All Transients Constellation Hunters (CATCH) space mission is an intelligent constellation consisting of 126 micro-satellites in three types (A, B, and C), designed for X-ray observation with the objective of studying the dynamic universe. Currently, we are actively developing the first Pathfinder (CATCH-1) for the CATCH mission, specifically for type-A satellites. CATCH-1 is equipped with Micro Pore Optics (MPO) and a 4-pixel Silicon Drift Detector (SDD) array. To assess its scientific performance, including the effective area of the optical system, on-orbit background, and telescope sensitivity, we employ the Monte Carlo software Geant4 for simulation in this study. The MPO optics exhibit an effective area of $41$ cm$^2$ at the focal spot for 1 keV X-rays, while the entire telescope system achieves an effective area of $29$ cm$^2$ at 1 keV when taking into account the SDD detector's detection efficiency. The primary contribution to the background is found to be from the Cosmic X-ray Background. Assuming a 625 km orbit with an inclination of $29^\circ$, the total background for CATCH-1 is estimated to be $8.13\times10^{-2}$ counts s$^{-1}$ in the energy range of 0.5--4 keV. Based on the background within the central detector and assuming a Crab-like source spectrum, the estimated ideal sensitivity could achieve $1.9\times10^{-12}$ erg cm$^{-2}$ s$^{-1}$ for an exposure of 10$^4$ s in the energy band of 0.5--4 keV. Furthermore, after simulating the background caused by low-energy charged particles near the geomagnetic equator, we have determined that there is no need to install a magnetic deflector. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_15275 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Simulation Studies for the First Pathfinder of the CATCH Space Mission Huang, Yiming Zhang, Juan Tao, Lian Li, Zhengwei Zhao, Donghua Yin, Qian-Qing Wen, Xiangyang Xiao, Jingyu Zhang, Chen Zhang, Shuang-Nan Xiong, Shaolin Bu, Qingcui Cang, Jirong Cao, Dezhi Chen, Wen Ding, Siran Gao, Min Gao, Yang Hou, Shujin Jia, Liping Jin, Ge Li, Dalin Li, Jinsong Li, Panping Li, Yajun Liu, Xiaojing Ma, Ruican Pan, Xingyu Qi, Liqiang Rao, Jinhui Sun, Xianfei Tang, Qingwen Tang, Ruijing Wang, Yusa Xu, Yibo Yang, Sheng Yang, Yanji Yang, Yong Zhang, Xuan Zhang, Yueting Zhou, Heng Zhao, Kang Zhao, Qingchang Zhao, Shujie Zhao, Zijian Instrumentation and Methods for Astrophysics The Chasing All Transients Constellation Hunters (CATCH) space mission is an intelligent constellation consisting of 126 micro-satellites in three types (A, B, and C), designed for X-ray observation with the objective of studying the dynamic universe. Currently, we are actively developing the first Pathfinder (CATCH-1) for the CATCH mission, specifically for type-A satellites. CATCH-1 is equipped with Micro Pore Optics (MPO) and a 4-pixel Silicon Drift Detector (SDD) array. To assess its scientific performance, including the effective area of the optical system, on-orbit background, and telescope sensitivity, we employ the Monte Carlo software Geant4 for simulation in this study. The MPO optics exhibit an effective area of $41$ cm$^2$ at the focal spot for 1 keV X-rays, while the entire telescope system achieves an effective area of $29$ cm$^2$ at 1 keV when taking into account the SDD detector's detection efficiency. The primary contribution to the background is found to be from the Cosmic X-ray Background. Assuming a 625 km orbit with an inclination of $29^\circ$, the total background for CATCH-1 is estimated to be $8.13\times10^{-2}$ counts s$^{-1}$ in the energy range of 0.5--4 keV. Based on the background within the central detector and assuming a Crab-like source spectrum, the estimated ideal sensitivity could achieve $1.9\times10^{-12}$ erg cm$^{-2}$ s$^{-1}$ for an exposure of 10$^4$ s in the energy band of 0.5--4 keV. Furthermore, after simulating the background caused by low-energy charged particles near the geomagnetic equator, we have determined that there is no need to install a magnetic deflector. |
| title | Simulation Studies for the First Pathfinder of the CATCH Space Mission |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2402.15275 |