ExoSim 2: the new exoplanet observation simulator applied to the Ariel space mission

Lorenzo V. Mugnai; Andrea Bocchieri; Enzo Pascale

doi:10.1117/12.3019036

23 August 2024 ExoSim 2: the new exoplanet observation simulator applied to the Ariel space mission

Lorenzo V. Mugnai, Andrea Bocchieri, Enzo Pascale

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 1309243 (2024) https://doi.org/10.1117/12.3019036
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

ExoSim 2 is the next generation of the Exoplanet Observation Simulator (ExoSim), designed for spectrophotometric observations of transiting exoplanets from space, ground, and sub-orbital platforms. Implemented in Python 3, it uses object-oriented design principles, allowing extensive customization and extension. Featuring a modular architecture with Task classes, ExoSim 2 encapsulates simulation algorithms, providing flexibility and extensibility. The Signal class manages data in a structured cube format, incorporating temporal, spatial, and spectral dimensions, enabling accurate simulation of observational data across various conditions and instrument configurations. The workflow consists of three main steps: creating focal planes, producing subexposures, and generating non-destructive reads (NDRs). This structure optimizes computational efficiency and resource management, facilitating detailed simulations. ExoSim 2 has been validated against tools like ArielRad, demonstrating accuracy in photon conversion efficiency, saturation time, and signal generation. It has also been tested for instantaneous read-out and jitter simulation, confirming its robustness. Applied to the Ariel mission, ExoSim 2 simulates raw observational data, aiding in mission preparation, instrument design, and observational strategy optimization. Its adaptability makes it a valuable tool for various missions beyond Ariel. ExoSim 2 represents a significant advancement in exoplanet observation simulation, providing researchers with a powerful tool to enhance understanding of exoplanetary systems and optimize the use of observational resources.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lorenzo V. Mugnai, Andrea Bocchieri, and Enzo Pascale "ExoSim 2: the new exoplanet observation simulator applied to the Ariel space mission", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309243 (23 August 2024); https://doi.org/10.1117/12.3019036

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