Heasim and Skyback Simulation Tools and Their Application to the Hitomi Mission

Loewenstein, Michael ; Angelini, Lorella ; Riethmiller, David A ; Hill, Robert S ; Dutka, Michael S ; Witthoeft, Michael C ; Yaqoob, Tahir

关键词: APPLICATIONS PROGRAMS (COMPUTERS);    COMPUTERIZED SIMULATION;    SIMULATION;    X RAY SPECTROMETERS;    SPACEBORNE TELESCOPES;    X RAY TELESCOPES;    BACKGROUND RADIATION;    SKY RADIATION;    X RAY SOURCES;    SPECTRAL COUNTERPARTS (ASTRONOMY);    MULTI-MESSENGER ASTROPHYSICS;    COMPUTATIONAL ASTROPHYSICS;    MONTE CARLO METHOD;    PYTHON (PROGRAMMING LANGUAGE);    X RAY ASTRONOMY;    JAPANESE SPACE PROGRAM;    NASA SPACE PROGRAMS;   

RP-ID  :  GSFC-E-DAA-TN69927

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We present an introduction to the heasim multimission observation and skyback background, high-energy pseudo Monte Carlo astrophysical simulation tools. Heasim may be used to accurately and efficiently construct flexible image transport system (FITS) event files for simple or composite sources with a wide range of standard and user-defined spatial, spectral, and temporal characteristics. Skyback is designed to enable users to assess the impact of background discrete and diffuse emission on prospective observations, and skyback output may be directly input into heasim. We present a brief overview of heasim and skyback input, algorithms, usage, and output. We also introduce the sxsbranch tool that computes Hitomi soft X-ray spectrometer resolution grade branching ratios, emphasizing its application to simulations. We include several examples of particular relevance to the Hitomi mission.