Search Results - "Tajima, O"
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A Measurement of the Degree-scale CMB B-mode Angular Power Spectrum with Polarbear
Published in The Astrophysical journal (01-07-2020)“…We present a measurement of the B-mode polarization power spectrum of the cosmic microwave background (CMB) using data taken from 2014 July to 2016 December…”
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Search for Dark Photon Dark Matter in the Mass Range 74-110 μeV with a Cryogenic Millimeter-Wave Receiver
Published in Physical review letters (17-02-2023)“…We search for the dark photon dark matter (DPDM) using a cryogenic millimeter-wave receiver. DPDM has a kinetic coupling with electromagnetic fields with a…”
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A measurement method for responsivity of microwave kinetic inductance detector by changing power of readout microwaves
Published in Applied physics letters (15-07-2019)“…Superconducting detectors are a modern technology applied in various fields. The microwave kinetic inductance detector (MKID) is one of the cutting-edge…”
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A Measurement of the CMB E-mode Angular Power Spectrum at Subdegree Scales from 670 Square Degrees of POLARBEAR Data
Published in The Astrophysical journal (01-11-2020)“…We report a measurement of the E-mode polarization power spectrum of the cosmic microwave background (CMB) using 150 GHz data taken from 2014 July to 2016…”
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Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment
Published in Physical review letters (03-04-2020)“…Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more…”
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A Forecast of the Sensitivity on the Measurement of the Optical Depth to Reionization with the GroundBIRD Experiment
Published in The Astrophysical journal (01-07-2021)“…Abstract We compute the expected sensitivity on measurements of optical depth to reionization for a ground-based experiment at Teide Observatory. We simulate…”
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Effect of Whey-Derived Lactopeptide β-Lactolin on Memory in Healthy Adults: An Integrated Analysis of Data from Randomized Controlled Trials
Published in The Journal of nutrition, health & aging (01-02-2022)“…Context Epidemiological studies have shown that consumption of dairy products reduces the risk of dementia and cognitive decline in older individuals…”
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Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey
Published in The Astrophysical journal (01-06-2022)“…Abstract We report an improved measurement of the degree-scale cosmic microwave background B -mode angular-power spectrum over 670 deg 2 sky area at 150 GHz…”
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Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data
Published in The Astrophysical journal (01-04-2020)“…We present a measurement of the gravitational lensing deflection power spectrum reconstructed with two seasons of cosmic microwave background polarization data…”
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GroundBIRD: A CMB Polarization Experiment with MKID Arrays
Published in Journal of low temperature physics (01-09-2020)“…GroundBIRD is a ground-based experiment for a precise observation of the cosmic microwave background (CMB) polarizations. To achieve high sensitivity at large…”
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Development of a Data Acquisition System for Kinetic Inductance Detectors: Wide Dynamic Range and High Sampling Rate for Astronomical Observation
Published in Journal of low temperature physics (01-11-2018)“…Microwave kinetic inductance detectors have a variety of potential applications in astronomical observations. We built a data acquisition system for kinetic…”
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Measurements of Tropospheric Ice Clouds with a Ground-based CMB Polarization Experiment, POLARBEAR
Published in The Astrophysical journal (10-01-2019)“…The polarization of the atmosphere has been a long-standing concern for ground-based experiments targeting cosmic microwave background (CMB) polarization. Ice…”
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13
A method to measure superconducting transition temperature of microwave kinetic inductance detector by changing power of readout microwaves
Published in AIP advances (01-09-2020)“…A microwave kinetic inductance detector (MKID) is a cutting-edge superconducting detector, and its principle is based on a superconducting resonator circuit…”
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14
Cross-correlation of CMB Polarization Lensing with High-z Submillimeter Herschel-ATLAS Galaxies
Published in The Astrophysical journal (20-11-2019)“…We report a 4.8 measurement of the cross-correlation signal between the cosmic microwave background (CMB) lensing convergence reconstructed from measurements…”
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Deployment of Polarbear-2A
Published in Journal of low temperature physics (01-05-2020)“…Polarbear -2A is the first of three receivers in the Simons array, a cosmic microwave background experiment located on the Atacama Plateau in Chile. Polarbear…”
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Front–End Electronics for the Array Readout of a Microwave Kinetic Inductance Detector Towards Observation of Cosmic Microwave Background Polarization
Published in Journal of low temperature physics (01-07-2016)“…Precise measurements of polarization patterns in cosmic microwave background (CMB) provide deep knowledge about the begin of the Universe. The GroundBIRD…”
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Pointing Calibration of GroundBIRD Telescope Using Moon Observation Data
Published in Progress of theoretical and experimental physics (01-02-2024)“…Abstract Understanding telescope pointing (i.e. line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The…”
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Characterization of two-level system noise for a microwave kinetic inductance detector comprising niobium film on a silicon substrate
Published in Progress of theoretical and experimental physics (01-03-2022)“…Abstract A microwave kinetic inductance detector (MKID) is a cutting-edge superconducting detector. It comprises a resonator circuit constructed with a…”
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19
Development of a Crosstalk Suppression Algorithm for KID Readout
Published in Journal of low temperature physics (01-11-2018)“…The GroundBIRD telescope aims to detect B-mode polarization of the cosmic microwave background radiation using the kinetic inductance detector array as a…”
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20
GroundBIRD Experiment: Detecting CMB Polarization Power in a Large Angular Scale from the Ground
Published in Journal of low temperature physics (01-09-2014)“…GroundBIRD is a ground-based experiment designed to detect large angular scale odd-parity patterns in the cosmic microwave background (CMB) polarization ( B…”
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