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The Future Japanese CBR Anisotropy Observatory at the Moon

Published online by Cambridge University Press:  14 August 2015

M. Tsuboi
Affiliation:
Ibaraki University, Mito, Ibaraki, 310, Japan
N. Kaifu
Affiliation:
National Astronomical Observatory, Tokyo, 181, Japan
H. Karoji
Affiliation:
National Astronomical Observatory, Tokyo, 181, Japan
S. Takeuchi
Affiliation:
NASDA, Japan
T. Iwata
Affiliation:
NASDA, Japan
N. Itoh
Affiliation:
Mitsubishi Electric Corporation, Japan
N. Miyahara
Affiliation:
Mitsubishi Electric Corporation, Japan

Abstract

We have a plan to a radioastronomy mission at the Moon. This is dedicated to the mapping of the CBR anisotropy in order to study the properties of the early Universe, especially galaxy formation. This is a candidate for the Moon mission of NASDA, launched by an HIIA Rocket. The mission carries an 1.5 m (min.) offset parabola antenna with radiation shield to the north polar region of the Moon. This will observe CBR anisotropy at three (min.) frequencies between 30 to 90 GHz. The angular resolution is 9’ at 90 GHz. The telescope will observe the donut-shaped sky between 5 to 30 degree (not fixed) from the Moon celestial north pole. The resultant sensitivity will reach ΔT/T ⋍ 106K in 30’x30’ pixel and ΔT/T ⋍ 105K in 9’x9’ pixel.

Type
II. Joint Discussions
Copyright
Copyright © Kluwer 1998

References

1. Scott, D., Silk, J., fc White, M., Science, 268, 829, (1995)CrossRefGoogle Scholar
2. Smoot, G. et al., Astrophys.J., 396, L1, (1992)CrossRefGoogle Scholar
3. Miyahara, N. et al., in preparationGoogle Scholar

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