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Impact of reionization history on constraining primordial gravitational waves in future all-sky cosmic microwave background experiments
Hanchun Jiang, Toshiya Namikawa
We explore the impact of the reionization history on examining the shape of the power spectrum of the primordial gravitational waves (PGWs) with the cosmic microwave background (CM…
Efficient estimation of rotation-induced bias to reconstructed CMB lensing power spectrum
Hongbo Cai, Yilun Guan, Toshiya Namikawa +1
The cosmic microwave background (CMB) lensing power spectrum is a powerful probe of the late-time universe, encoding valuable information about cosmological parameters such as the…
The Simons Observatory: Combining delensing and foreground cleaning for improved constraints on inflation
Emilie Hertig, Kevin Wolz, Toshiya Namikawa +3
The Simons Observatory (SO), a next-generation ground-based CMB experiment in its final stages of construction, will target primordial -modes with unprecedented sensitivity to s…
The Atacama Cosmology Telescope: Reionization kSZ trispectrum methodology and limits
Niall MacCrann, Frank J. Qu, Toshiya Namikawa +20
Patchy reionization generates kinematic Sunyaev-Zeldovich (kSZ) anisotropies in the cosmic microwave background (CMB). Large-scale velocity perturbations along the line of sight mo…
The Simons Observatory: Combining cross-spectral foreground cleaning with multitracer -mode delensing for improved constraints on inflation
Emilie Hertig, Kevin Wolz, Toshiya Namikawa +16
The Simons Observatory (SO), due to start full science operations in early 2025, aims to set tight constraints on inflationary physics by inferring the tensor-to-scalar ratio f…