Science Simulations For The X-ray Grating Spectrometer Onboard The International X-ray Observatory

Details Science Simulations For The X-ray Grating Spectrometer Onboard The International X-ray Observatory Science Simulations For The X-ray Grating Spectrometer Onboard The International X-ray Observatory

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.4019m&link_type=abstract

American Astronomical Society, HEAD meeting #11, #40.19; Bulletin of the American Astronomical Society, Vol. 41, p.723

Physics

Optics

Scientific paper

The International X-ray Observatory (IXO) is a collaborative effort between NASA, ESA, and JAXA. The IXO science goals are heavily based on obtaining high quality X-ray spectra. In order to achieve this goal the science payload will incorporate an array of gratings for high resolution, high throughput spectroscopy at the lowest X-ray energies, 0.3 - 1.0 keV. The spectrometer will address a number of important astrophysical goals such as studying the dynamics of clusters of galaxies, determining how elements are created in the explosions of massive stars, and revealing most of the "normal” matter in the universe which is currently thought to be hidden in hot filaments of gas stretching between galaxies. In this paper we present simulations of key grating spectroscopy science targets using the Off-Plane X-ray Grating Spectrometer concept design. These simulations use detailed ray tracing of the entire observatory with accurate response matrices for the optics, gratings, and CCDs. The simulations will be used to determine design goals such as CCD frame rate, zero order throughput, and absolute wavelength determination. This will be particularly important for the faintest targets.

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