| Budget Amount *help |
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
Weak lensing effect on the cosmic microwave background (CMB), which has been recently detected from multiple experiments, will be one of the important cosmological probes in the near future. In this research project, we develop the method of measuring the weak lensing of CMB. We first improve the lensing estimator constructed from CMB polarization. From the first to the second year, we focus on the application of the CMB lensing analysis to the measurement of the inflationary gravitational wave. In our first step, we explore whether we can detect the lensing signals from a patchwork of polarization maps observed from ground-based CMB experiments, and then, using this lensing signals, we show the effectiveness of the delensing for LiteBIRD observation. In addition, we explore future detectability of the gravitational-wave induced lensing from high-sensitivity CMB experiments.
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