Physics – Optics
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..714..443b&link_type=abstract
X-RAY TIMING 2003: Rossie and Beyond. AIP Conference Proceedings, Volume 714, pp. 443-446 (2004).
Physics
Optics
X- And Gamma-Ray Telescopes And Instrumentation, Spaceborne And Space Research Instruments, Apparatus, And Components, X-Ray
Scientific paper
Very lightweight X-ray optics are being developed by ESA and its industrial partners, for a number of X-ray astronomy and planetary missions. These developments could significantly improve the performance of future X-ray timing instrumentation. Based on Micro-Channel Plates (MCPs), the novel optics effectively reduce the mirror thickness by almost two orders of magnitude, and therefore also the mass of the telescope optics. Very large collecting areas become feasible for space implementation, especially as required for X-ray timing observations. Furthermore this technology leads to much reduced detector sizes due to the use of imaging X-ray optics. This dramatically improves the detected signal-to-noise ratios, as well as introducing photon collection areas sufficiently large as to study temporal phenomona on the millisecond time scale. This is particularly important to improve the studies of compact X-ray sources, both for improving the signal:noise ratios in temporal bins so that spectral or fluctuation analyses are improved, and for extending the range of measurements to fainter classes of objects.
We present a brief overview of the MCP optics technology, and some basic design rules relevant to such systems. The performance of such optics and some possible mission implementations will be discussed.
Bavdaz Marcos
Beijersbergen Marco
Lumb David H.
Peacock Aaron
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