High-z gamma-ray bursts for unraveling the dark ages mission HiZ-GUNDAM

Abstract

We are now investigating and studying a small satellite mission HiZ-GUNDAM for future observation of gamma-ray bursts (GRBs). The mission concept is to probe "the end of dark ages and the dawn of formation of astronomical objects", i.e. the physical condition of early universe beyond the redshift z > 7. We will consider two kinds of mission payloads, (1) wide field X-ray imaging detectors for GRB discovery, and (2) a near infrared telescope with 30 cm in diameter to select the high-z GRB candidates effectively. In this paper, we explain some requirements to promote the GRB cosmology based on the past observations, and also introduce the mission concept of HiZ-GUNDAM and basic development of X-ray imaging detectors.

arXiv comment12 pages, 9 figures, SPIE Astronomical Telescopes + Instrumentation (2014)

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• Multiplexing lobster-eye optics: a concept for wide-field X-ray monitoring