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Imaging in Hard X-ray Astronomy

Published online by Cambridge University Press:  26 May 2016

T. P. Li
T. P. Li*
Affiliation:
Physics Dept. and Center for Astrophys., Tsinghua University, and Institute of High Energy Physics, CAS, Beijing, China

Abstract

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The energy range of hard X-rays is a key waveband to the study of high energy processes in celestial objects, but still remains poorly explored. In contrast to direct imaging methods used in the low energy X-ray and high energy gamma-ray bands, currently imaging in the hard X-ray band is mainly achieved through various modulation techniques. A new inversion technique, the direct demodulation method, has been developed since early 90s. with this technique, wide field and high resolution images can be derived from scanning data of a simple collimated detector. The feasibility of this technique has been confirmed by experiment, balloon-borne observation and analyzing simulated and real astronomical data. Based the development of methodology and instrumentation, a high energy astrophysics mission – Hard X-ray Modulation Telescope (HXMT) has been proposed and selected in China for a four-year Phase-A study. The main scientific objectives are a full-sky hard X-ray (20–200 keV) imaging survey and high signal-to-noise ratio timing studies of high energy sources.

Type
Part 2 The Data Base of High Energy Astrophysics
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 70 - 83
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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