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Institute for the Physics and Mathematics of the UniverseWPI

IPMU seminar

Date: December 15, 2008, 13:30 - 15:00
Place: Seminar Room at IPMU Prefab. B, Kashiwa Campus of the University of Tokyo
Speaker: Hiro Tajima (Stanford Linear Accelerator Center)
Title: "Science and Instrumentation of ASTRO-H Mission: Next Generation X-ray/Gamma-ray Satellite Mission" [PDF]
Abstract: The ASTRO-H mission has been approved in Japan as a successor to the Suzaku mission. Two major scientific objectives include: study of dark energy through structure formation history and study of the high- energy non-thermal Universe (particle acceleration). The instrument design of the ASTRO-H satellite is optimized to achieve the above science goals: a high resolution spectrometer (SXS) with an energy resolution better than 7 eV at iron, two hard X-ray imagers (HXI) with hard X-ray telescopes (HXTs) to achieve two orders of magnitudes of sensitivity improvement in the energy range from 10 keV up to 80 keV, two soft gamma-ray detectors (SGDs) with one order of magnitude better sensitivity in the 80-300 keV energy band, in addition to a soft X-ray telescope (SXT)/soft X-ray imager (SXI) for modest spectroscopy/ imaging in the 0.1-10 keV energy band. The continuum sensitivity of the mission will reach several x10^(-8) photons/s/keV/cm2 in the hard X-ray region and a few x 10^(-7) photons/s/keV/cm^(2) in the soft gamma-ray region. Recently, the ASTRO-H mission is approved by as an official JAXA mission. I will describe the science of the ASTRO-H mission followed by the development of Si/CdTe detectors and ASICs (Application Specific Integrated Circuits) for HXI/SGD.