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arXiv 0801.0960astro-ph
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用于GRB和快速瞬态跟踪的CZT γ照相机的设计:用于EDGE任务的宽视场监视器

Design of a CZT Gamma-Camera for GRB and Fast Transient Follow-up: a Wide-Field-Monitor for the EDGE Mission

L. Natalucci, M. Feroci, E. Quadrini, P. Ubertini, L. Piro, J. W. den Herder, D. Barret, L. Amati, C. Budtz-Jorgensen, E. Caroli, S. Di Cosimo, M. Frutti, C. La… 展开作者

L. Natalucci, M. Feroci, E. Quadrini, P. Ubertini, L. Piro, J. W. den Herder, D. Barret, L. Amati, C. Budtz-Jorgensen, E. Caroli, S. Di Cosimo, M. Frutti, C. Labanti, F. Monzani, J. M. Poulsen, L. Nicolini, A. Stevoli

摘要:

SWIFT/BAT和INTEGRAL任务的成功无疑为瞬态伽马射线天空的后续和深入研究打开了一扇新的窗口。现在看来,这是宇宙学研究领域取得重要进展和深入了解致密物体物理学的关键。为了近实时地探测像伽马射线暴、来自中子星的热核闪光和其他类型的X射线爆发这样的爆炸事件,我们提出了一种宽视场伽玛射线编码掩模仪器的概念,该仪器工作在8-200 keV范围内,灵敏度为0.4 ph cm-2 s-1/s(15-150 keV),在宽达3sr的天空区域内的定位精度为arcmin。这一科学要求可以通过两个大面积、高空间分辨率的CZT检测平面来实现,CZT检测平面由相对大(~ 1cm 2)的晶体阵列制成,晶体阵列又被读出为较小像素的矩阵。为了实现如此宽的视场,这两个单元可以放置在S/C平台的两侧,为有效载荷提供复杂的强大X射线仪器,如为EDGE任务设计的。这两个单元将配备强大的信号读出系统和数据处理电子设备,为X射线望远镜的快速自主目标采集提供源位置的精确机载重建。

英文摘要:

The success of the SWIFT/BAT and INTEGRAL missions has definitely opened a new window for follow-up and deep study of the transient gamma-ray sky. This now appears as the access key to important progresses in the area of cosmological research and deep understanding of the physics of compact objects. To detect in near real-time explosive events like Gamma-Ray bursts, thermonuclear flashes from Neutron Stars and other types of X-ray outbursts we have developed a concept for a wide-field gamma-ray coded mask instrument working in the range 8-200 keV, having a sensitivity of 0.4 ph cm-2 s-1 in 1s (15-150 keV) and arcmin location accuracy over a sky region as wide as 3sr. This scientific requirement can be achieved by means of two large area, high spatial resolution CZT detection planes made of arrays of relatively large (~1cm2) crystals, which are in turn read out as matrices of smaller pixels. To achieve such a wide Field-Of-View the two units can be placed at the sides of a S/C platform serving a payload with a complex of powerful X-ray instruments, as designed for the EDGE mission. The two units will be equipped with powerful signal read out system and data handling electronics, providing accurate on-board reconstruction of the source positions for fast, autonomous target acquisition by the X-ray telescopes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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