Simulations for the International X-ray Observatory

Slack, Nathan William (2011). Simulations for the International X-ray Observatory. University of Birmingham. Ph.D.


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The subject of this thesis is the simulation of X-ray cluster surveys and related issues, with a focus on the research that can be conducted with the International X-ray Observatory (IXO), or a similar next-generation X-ray observatory.

A general purpose X-ray image simulator has been developed. It uses a modern cosmological simulation and cluster scaling relations to produce simulated cluster images that are well motivated by theory and observation. A distribution of point sources and various instrumental effects are also included. The simulator is complemented by a source identification method.

The IXO selection function is mapped over a varying surface brightness parameter space. Simulated IXO surveys are used to explore the biases present in X-ray cluster surveys. These reveal that it is necessary to correct for biases using a detailed and carefully applied selection function to recover the true evolution of the luminosity-temperature relation. This is crucial for shallow surveys.

Simulations of IXO using different angular resolutions are found to have only a minor effect on the number and distribution of detected clusters.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
College/Faculty: Colleges (2008 onwards) > College of Engineering & Physical Sciences
School or Department: School of Physics and Astronomy
Funders: None/not applicable
Subjects: Q Science > QB Astronomy
Q Science > QC Physics


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