NASA > GSFC > Astrophysics Science Division > IXO
Presentation of the IXO mission concept at the IXO Coordination Group meeting on 20 November 2008. Published: 16 December 2008
The XEUS proposal submitted to ESA in response to the Cosmic Vision call for proposals. Published: 29 June 2007.
XEUS Vision Mission Proposal, August 2008, Download PDF (8.7 Mb)
This document reports on the accommodation of the core and ancillary instruments in an integrated XEUS payload. Published: 17 April 2007.
The XEUS payload module accommodation study was the basis for the XEUS mission system study. Published: 23 Mar 2007.
This technical note provides a brief overview of critical issues and some recent updates since the publication of a series of papers at the 2006 SPIE Annual Symposium. Published: 2 March 2007
Status report on the preparatory activities that were ongoing at the time. Published: 2 November 2006
This document provides a summary of the preliminary results of a revised X-Ray Observatory mission scenario, and includes an overview of the envisaged study approach. Published: 31 March 2006
This paper presents a core set of instruments that have been selected for XEUS that allow the scientific goals of the mission to be met. Additional science goals for the mission such as high time resolution, polarimetry and extensions to high energies >10keV, and the additional instruments with modest resource requirements which may facilitate these goals are mentioned. Published : 30 August 2005
The report on the Concurrent Design Facility (CDF) study at the time (2004). The objectives of the study were to perform a system conceptual design and trades, prepare a preliminary system design including budgets and subsystem designs with required performance, show science requirements compliance, define critical design issues requiring further analysis and assess and analyse programme, risk and costs. Further the constraints imposed by the chosen design were analyzed and described, where appropriate. This document reports on the analysis performed and conclusions drawn for an X-ray Evolving Universe Spectroscopy conceptual design. Published: 01 October 2004.