SIXTE --通用X射线仪器仿真工具包
SIXTE -- The Generic X-ray Instrument Simulation Toolkit
摘要：
本文介绍了X射线望远镜模拟软件包SIXTE，它是一个通用的、与任务无关的用于X射线天文仪器的蒙特卡罗模拟工具包。该软件包是基于一个模块化的方法来定义源，光学的描述，和探测器类型，使新的任务可以很容易地实施。要模拟的目标存储在一个灵活的输入格式称为SIMPUT。基于此源定义，产生光子样本，然后通过光学器件传播。为了对检测过程进行建模，该软件工具包包含各种检测器类型的模块，从正比计数器和硅基检测器到更复杂的描述，如过渡边缘传感器（TES）器件。特征探测器效应的实现和读出过程的详细建模允许代表性模拟，因此能够分析特征特征，例如堆积及其对观测的影响。我们提出了一个概述的实施SIXTE从输入源，成像和检测过程中，突出模块化的方法所采取的SIXTE软件包。为了证明模拟软件的功能，我们提出了一个选择的代表性的应用程序，包括eROSITA的全天空调查和堆积效应的研究比较目前运行的XMM-牛顿与计划的雅典娜-WFI仪器。一个星系团与雅典娜-X-IFU的模拟显示的能力，SIXTE预测的观测一个复杂的源与空间变化的频谱和我们目前的知识，未来的仪器的预期性能。
英文摘要：
We give an overview of the SImulation of X-ray TElescopes (SIXTE) software package, a generic, mission-independent Monte Carlo simulation toolkit for X-ray astronomical instrumentation. The package is based on a modular approach for the source definition, the description of the optics, and the detector type such that new missions can be easily implemented. The targets to be simulated are stored in a flexible input format called SIMPUT. Based on this source definition, a sample of photons is produced and then propagated through the optics. In order to model the detection process, the software toolkit contains modules for various detector types, ranging from proportional counter and Si-based detectors, to more complex descriptions like transition edge sensor (TES) devices. The implementation of characteristic detector effects and a detailed modeling of the read-out process allow for representative simulations and therefore enable the analysis of characteristic features, such as for example pile-up, and their impact on observations. We present an overview of the implementation of SIXTE from the input source, the imaging, and the detection process, highlighting the modular approach taken by the SIXTE software package. In order to demonstrate the capabilities of the simulation software, we present a selection of representative applications, including the all-sky survey of eROSITA and a study of pile-up effects comparing the currently operating XMM-Newton with the planned Athena-WFI instrument. A simulation of a galaxy cluster with the Athena- X-IFU shows the capability of SIXTE to predict the expected performance of an observation for a complex source with a spatially varying spectrum and our current knowledge of the future instrument.
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