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PERFORMANCE OF THE IBIS COMPTON MODE

机译:IBIS COMPTON模式的性能

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The IBIS instrument launched on board the ESA INTEGRAL observatory on October 2002 is a coded mask telescope composed by two position sensitive detection planes, one with 16384 Cadmium Telluride pixels (ISGRI) and the other with 4096 Caesium Iodide pixels (PICsIT). Events detected in coincidence in the two detector layers are flagged as generated by Compton scattered photons and can be then processed and filtered using the Compton kinematic equations. The analysis of these data is, however, quite complex, mainly due to the presence of a great number of fake events generated by random coincidences between uncorrelated ISGRI and PICsIT events; if this component is not subtracted with great accuracy, false source detections can be produced. In this work, we present the performance (spectral and imaging) obtainable from the IBIS Compton data, by analyzing ground calibration acquisitions. We also analyze the IBIS Compton flight data relative to the Crab observation, to determine its scientific capabilities.
机译:IBIS仪器是2002年10月在ESA INTEGRAL天文台上发射的,是一种编码掩模望远镜,由两个位置敏感的检测平面组成,一个具有16384碲化镉像素(ISGRI),另一个具有4096铯铯像素(PICsIT)。在两个检测器层中同时检测到的事件被标记为由康普顿散射光子生成,然后可以使用康普顿运动方程进行处理和过滤。但是,这些数据的分析非常复杂,这主要是由于存在大量的假事件,这些假事件是由不相关的ISGRI事件与PICsIT事件之间的随机巧合产生的;如果未高精度地减去此分量,则可能会产生错误的源检测。在这项工作中,我们通过分析地面校准采集数据,介绍了可从IBIS康普顿数据获得的性能(光谱和成像)。我们还将分析相对于Crab观测的IBIS康普顿飞行数据,以确定其科学能力。

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