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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Monte Carlo simulator and ancillary response generator of Suzaku XRT/XIS system for spatially extended source analysis
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Monte Carlo simulator and ancillary response generator of Suzaku XRT/XIS system for spatially extended source analysis

机译：Suzaku XRT / XIS系统的Monte Carlo模拟器和辅助响应生成器，用于空间扩展源分析

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摘要

We have developed a framework for the Monte Carlo simulations of X-Ray Telescope (XRT) and X-ray Imaging Spectrometer (XIS) on board Suzaku, mainly for the scientific analysis of spatially and spectroscopically complex celestial sources. A photon-by-photon instrumental simulator is built on the ANL platform, which has been successfully used in ASCA data analysis. The simulator has a modular structure, in which the XRT simulation is based on a ray-tracing library, while the XIS simulation utilizes a spectral "Redistribution Matrix File" (RMF), generated separately by other tools. Instrumental characteristics and calibration results [e.g., XRT geometry, reflectivity, mutual alignments, thermal shield transmission, build-up of the contamination on the XIS optical blocking filters (OBF)] are incorporated as completely as possible. Most of this information is available in the form of FITS (Flexible Image Transport System) files in the standard calibration database (CALDB). This simulator can also be utilized to generate an "Ancillary Response File" (ARF), which describes the XRT response and the amount of OBF contamination. An ARF is dependent on the spatial distribution of the celestial target and the photon accumulation region on the detector, as well as the observing conditions, such as the observation date and satellite attitude. We describe the principles of the simulator and the ARF generator, and demonstrate their performance compared with in-flight data.
机译：我们已经为朱雀号上的X射线望远镜（XRT）和X射线成像光谱仪（XIS）的蒙特卡罗模拟开发了一个框架，主要用于对空间和光谱复杂的天体来源进行科学分析。在ANL平台上构建了一个逐个光子的仪器模拟器，该模拟器已成功用于ASCA数据分析中。该模拟器具有模块化结构，其中XRT模拟基于光线跟踪库，而XIS模拟则利用由其他工具单独生成的光谱“重新分布矩阵文件”（RMF）。仪器特性和校准结果[例如XRT几何形状，反射率，相互对准，热屏蔽传输，XIS光学阻挡滤光片（OBF）上污染物的积累]尽可能完整地并入。这些信息大部分以标准校准数据库（CALDB）中FITS（柔性图像传输系统）文件的形式提供。该模拟器还可用于生成“辅助响应文件”（ARF），该文件描述了XRT响应和OBF污染量。 ARF取决于天体目标和探测器上光子积累区域的空间分布，以及观测条件，例如观测日期和卫星姿态。我们描述了模拟器和ARF发生器的原理，并展示了它们与飞行中数据相比的性能。

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