A5101546980- Radio Astronomy Observations and Technology
- Superconducting and THz Device Technology
- Geology and Paleoclimatology Research
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Paleontology and Stratigraphy of Fossils
- Adaptive optics and wavefront sensing
- Inertial Sensor and Navigation
- earthquake and tectonic studies
- Spacecraft Design and Technology
- Pleistocene-Era Hominins and Archaeology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Methane Hydrates and Related Phenomena
- Geological and Geochemical Analysis
- Marine and coastal ecosystems
- Radio Frequency Integrated Circuit Design
Tohoku University
2011-2024
Abstract Understanding telescope pointing (i.e. line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon a candidate source calibration. Although visible size (30′) larger than that planets, we can frequently observe once month with high signal-to-noise ratio. We developed method performing calibration using observational data from Moon. considered tilts axes as well encoder collimation offsets In addition, evaluated effects...
The cutting-edge superconducting detector, Microwave Kinetic Inductance Detector（MKID） has been popular in the field of astronomical radio observations such as Cosmic Background（CMB）, star-forming regions, and galaxy surveying. MKID is a resonator-based detector which scalability to exceed O（1,000） pixels one readout line. photon-noise-limited sensitivity can be achieved with hybrid-type consists two materials. arrays are utilized “GroundBIRD” “Tsukuba-KID camera” projects led by Japanese...
GroundBIRD is a ground-based cosmic microwave background (CMB) experiment for observing the polarization pattern imprinted on large angular scales (ℓ > 6 ) from Teide Observatory in Tenerife, Spain. Our primary scientific objective precise measurement of optical depth τ (σ(τ ∼ 0.01) to reionization epoch Universe cross-check systematic effects measurements made by previous experiments. observes wide sky area Northern Hemisphere (∼ 40% full sky) while continuously rotating telescope at high...
GroundBIRD is a ground-based telescope for measuring the polarization of cosmic microwave background radiation, and it soon to be operational at Teide Observatory. The employs Mizuguchi-Dragone dual reflectors 161 kinetic inductance detectors coupled with single antennas as photon detectors. We present results our optical simulation on pointing direction, stray light response, influence blackbody radiation from baffle. also find that power baffle incident reduced by 99.95% when corrugated...
Understanding telescope pointing (i.e., line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon a candidate source calibration. Although visible size ($\ang{;30}$) larger than that planets, we can frequently observe once month with high signal-to-noise ratio. We developed method performing calibration using observational data from Moon. considered tilts axes as well encoder collimation offsets In addition, evaluated effects...