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The Athena X-ray Integral Field Unit (X-IFU)

2018; Springer Science+Business Media; Volume: 193; Issue: 5-6 Linguagem: Inglês

10.1007/s10909-018-1904-5

1573-7357

F. Pajot, D. Barret, T. Lam-Trong, J. W. den Herder, L. Piro, M. Cappi, J. Huovelin, Richard L. Kelley, J. M. Más-Hesse, Kazuhisa Mitsuda, S. Paltani, G. Rauw, A. Różáńska, J. Wilms, Marco Barbera, F. Douchin, Hervé Geoffray, R. den Hartog, C. A. Kilbourne, Michel Le Du, C. Macculi, Jean-Michel Mesnager, Philippe Peille,

X-ray Spectroscopy and Fluorescence Analysis

The X-ray Integral Field Unit (X-IFU) of the Advanced Telescope for High-ENergy Astrophysics (Athena) large-scale mission of ESA will provide spatially resolved high-resolution X-ray spectroscopy from 0.2 to 12 keV, with 5 $$^{\prime \prime }$$ pixels over a field of view of 5 arc minute equivalent diameter and a spectral resolution of 2.5 eV (FWHM) up to 7 keV. The core scientific objectives of Athena drive the main performance parameters of the X-IFU. We present the current reference configuration of the X-IFU, and the key issues driving the design of the instrument.