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12 décembre 2013 Tout le mois


Didier Barret (IRAP) — Athena : The first deep Universe X-ray Observatory

Jeudi 12 décembre 2013 11:00-12:00 - Amphi

Abstract : The Advanced Telescope for High-energy Astrophysics (Athena) will be proposed to ESA as the L2 mission scheduled for a launch in 2028. It is specifically designed to answer two of the most pressing questions for astrophysics in the forthcoming decade : How did ordinary matter assemble into the large scale structures we see today ? and how do black holes grow and shape the Universe ? For addressing these two issues, Athena will provide transformational capabilities in terms of angular resolution, effective area, spectral resolution, grasp, that will make it the most powerful X-ray observatory ever flown by far. A lightweight X-ray telescope based on ESA’s Silicon Pore Optics technology provides large effective area (2 square meter) with excellent angular resolution (5 arc second), combining with state-of-the-art instrumentation for spatially resolved high resolution X- ray spectroscopy (2.5 eV spectral resolution as provided by the X-ray Integral Field Unit, X-IFU) and wide field X-ray imaging (40 x 40 ‘ field of view as provided by the Wide Field Imager, WFI), which also provides sub-millisecond timing capability for bright sources. Such an observatory, when opened to the astronomical community, will be used for virtually all classes of astrophysical objects, from high-z gamma-ray bursts to the closest planets in our solar neighborhood. Athena will guarantee a transformation in our understanding of The Hot and Energetic Universe, and establish European leadership in high-energy astrophysics for the foreseeable future. In this talk, I will review the core science objectives of Athena, present the science requirements and the foreseen implementation of the mission. I will illustrate the transformational capabilities of Athena compared to existing facilities, and discuss the foreseen French contribution to the X-ray Integral Field Unit.

Useful links :

Le site web Athena : http://www.the-athena-x-ray-observa...
Le lien vers le White Paper : http://cdsads.u-strasbg.fr/abs/2013...
Le lien vers le papier « Athena : The first deep Universe X-ray Observatory » : http://adsabs.harvard.edu/abs/2013s...
Le lien vers le papier décrivant le X-IFU : http://adsabs.harvard.edu/abs/2013a...
Le lien vers le papier décrivant le WFI : http://adsabs.harvard.edu/abs/2013a...
Le lien vers l’ensemble des supporting papers du thème : http://athena2.irap.omp.eu/spip.php...

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