2019年
LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection
Journal of Low Temperature Physics
- 巻
- 194
- 号
- 5-6
- 開始ページ
- 443
- 終了ページ
- 452
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s10909-019-02150-5
- 出版者・発行元
- Springer Science and Business Media LLC
LiteBIRD is a candidate satellite for a strategic large mission of JAXA. With its expected launch in the middle of the 2020s with a H3 rocket, LiteBIRD plans to map the polarization of the cosmic microwave background radiation over the full sky with unprecedented precision. The full success of LiteBIRD is to achieve δr< 0.001 , where δr is the total error on the tensor-to-scalar ratio r. The required angular coverage corresponds to 2 ≤ ℓ≤ 200 , where ℓ is the multipole moment. This allows us to test well-motivated cosmic inflation models. Full-sky surveys for 3 years at a Lagrangian point L2 will be carried out for 15 frequency bands between 34 and 448 GHz with two telescopes to achieve the total sensitivity of 2.5 μ K arcmin with a typical angular resolution of 0.5 ∘ at 150 GHz. Each telescope is equipped with a half-wave plate system for polarization signal modulation and a focal plane filled with polarization-sensitive TES bolometers. A cryogenic system provides a 100 mK base temperature for the focal planes and 2 K and 5 K stages for optical components.
- リンク情報
- ID情報
-
- DOI : 10.1007/s10909-019-02150-5
- ISSN : 0022-2291
- eISSN : 1573-7357
- ORCIDのPut Code : 64117633
- SCOPUS ID : 85062570840