[[UTAPwiki/セミナー/初期宇宙・相対論速報]] Speaker: Takashi Hiramatsu (Rikkyo Univ.) Title: Reconstruction of primordial tensor power spectrum from CMB B-mode observations Abstract: We present our on-going work on the reconstruction of primordial tensor power spectrum from the CMB B-mode observations. Directly computing the Fisher information matrix, we estimate the 1-\sigma error around the fiducial power spectrum of tensor perturbations. Using the results, we demonstrate that our approach is useful to constrain the models which predict characteristic features on the primordial tensor power spectrum. &br; |