High-energy astrophysics polarimetry may significantly benefit from e-ASTROGAM and from AMEGO mission proposals, since to date limited polarimetric measurements were performed in this domain, exclusively under 1 MeV. The polarimetric potential of both missions was analyzed in the Compton regime by Monte Carlo mass model simulations with MEGAlib toolkit. The performance of e-ASTROGAM was analyzed by simulating Si tracker and calorimeter alternative configurations and detection materials, within missions’ volume, mass and power margins. The modulation polarimetric factor, Q, and the MDP were calculated for different polarized source types and for variable incidence angle measurement conditions. Finally, the polarimetric performances of both instruments was compared and analyzed. Q modulation factors obtained ranged between ~0.2 and ~0.4 in the 0.2–2.0 MeV band and MDP ~0.65% was estimated for a 100% polarized Crab type source, 1 Ms. observation time and 3σ significance.

中文翻译：

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未来的伽玛射线任务的极化前景

e-ASTROGAM和AMEGO任务建议书可能会大大受益于高能天体物理学极化仪，因为迄今为止，仅在1 MeV以下才在该领域进行了有限的极化仪测量。通过MEGAlib工具包的蒙特卡洛质量模型仿真，在康普顿体系中分析了两个任务的极化势。通过在任务的体积，质量和功率范围内模拟Si跟踪仪和热量计的替代配置和检测材料，分析了e-ASTROGAM的性能。计算了不同偏振源类型和可变入射角测量条件下的调制极化系数Q和MDP。最后，对两种仪器的极化性能进行了比较和分析。问在0.2–2.0 MeV频带中获得的调制因子范围在〜0.2至〜0.4之间，对于100％极化Crab型源，1 Ms的观测时间和3σ的显着性，估计的MDP〜0.65％。