GRIPS和下一代Gamma-ray调查的前景
GRIPS and the Perspective of Next-generation Gamma-ray Surveys
摘要：
GRIPS是为天文学提出的下一代望远镜的一个例子，其能量范围介于NuStar和费米望远镜等硬X射线镜仪器之间。康普顿望远镜原理在背景抑制、大视场和能量范围内的成像灵敏度以及测量偏振的能力方面是有利的概念。高能天体物理源的多样性（宇宙射线相互作用的扩散发射、点状和扩散源的核线、吸积双星、宇宙射线加速场、新星和超新星、伽马射线暴）提出了一个挑战，特别强调需要大视场和大巡天。我们讨论了天体物理学的挑战，预计将继续延长积分任务后，以及如何在低能量伽马射线的下一代调查将影响这些。我们认为，定性新的和更直接的见解，可以获得宇宙高能现象及其潜在的物理过程。
英文摘要：
GRIPS is one example of next generation telescopes proposed for astronomy the energy range between hard X-ray mirror instruments such as NuStar and the Fermi telescope. The Compton telescope principle is an advantageous concept in view of background suppression, imaging sensitivity within a large field of view and energy range, and capability to measure polarization. The diversity of astrophysical sources at high energies (diffuse emission from cosmic-ray interactions, nuclear lines from point-like and diffuse sources, accreting binaries, cosmic-ray acceleration sites, novae and supernovae, GRBs) presents a challenge, and in particular emphasizes the need for large fields of view and surveys. We discuss the astrophysical challenges which are expected to remain after the extended INTEGRAL mission, and how such a next-generation survey at low-energy gamma-rays would impact on these. We argue that qualitatively new and more direct insights could be obtained on cosmic high-energy phenomena and their underlying physical processes.
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