Wide field x-ray telescopes: Detecting x-ray transients/afterglows related to GRBs

Physics – Optics

Scientific paper

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X- And Gamma-Ray Telescopes And Instrumentation, X- And Gamma-Ray Sources, Mirrors, Gratings, And Detectors, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

The recent discovery of X-ray afterglows of GRBs opens the possibility of analyses of GRBs by their X-ray detections. However, imaging X-ray telescopes in current use mostly have limited fields of view. Alternative X-ray optics geometries achieving very large fields of view have been theoretically suggested in the 70's but not constructed and used so far. We review the geometries and basic properties of the wide-field X-ray optical systems based on one- and two-dimensional lobster-eye geometry and suggest technologies for their development and construction. First results of the development of double replicated X-ray reflecting flats for use in one-dimensional X-ray optics of lobster-eye type are presented and discussed. The optimum strategy for locating GRBs upon their X-ray counterparts is also presented and discussed.

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