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EChOSim: The Exoplanet Characterisation Observatory software simulator |
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| Authors: | E Pascale I P Waldmann C J MacTavish A Papageorgiou A Amaral-Rogers R Varley V Coudé du Foresto M J Griffin M Ollivier S Sarkar L Spencer B M Swinyard M Tessenyi G Tinetti |
| Institution: | 1. School of Physics and Astronomy, Cardiff University, Cardiff, UK 2. Department of Physics and Astronomy, University College London, London, UK 3. Kavli Institute for Cosmology, University of Cambridge, Cambridge, UK 4. Laboratoire dEtudes Spatiales et dInstrumentation en Astrophysique, Meudon, France 5. Institut dAstrophysique Spatiale, Universit Paris XI, Orsay, France 6. Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, Canada 7. Space Science and Technology Department, Rutherford Appleton Laboratory, Didcot, UK |
| Abstract: | EChOSim is the end-to-end time-domain simulator of the Exoplanet Characterisation Observatory (EChO) space mission. EChOSim has been developed to assess the capability of the EChO mission concept to detect and characterise the atmospheres of transiting exoplanets. Here we discuss the details of the EChOSim implementation and describe the models used to represent the instrument and to simulate the detection. Software simulators have assumed a central role in the design of new instrumentation and in assessing the level of systematics affecting the measurements of existing experiments. Thanks to its high modularity, EChOSim can simulate basic aspects of several existing and proposed spectrometers including instruments on the Hubble Space Telescope and Spitzer, ground-based and balloon-borne experiments. A discussion of different uses of EChOSim is given, including examples of simulations performed to assess the EChO mission. |
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