K. Nandra, X. Barcons, D. Barret, A. Fabian, J.W. den Herder, L. Piro, M. Watson et al.

The mission proposal (as submitted to ESA) provides a detailed analysis of the underlying scientific questions of the hot and Energetic Universe, the mission profile, a description of the Athena payload and the spacecraft configuration, the science operations concept, the required technology developments at the spacecraft level and a discussion of the programmatic issues and costs.

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