137 citations · 163 across the 12 of their papers we have counts for
13 papers
GroundBIRD: First On-Sky Responsivity Calibration at the Teide Observatory
Alessandro Fasano, Yonggil Jo, Ricardo Tanausú Génova-Santos +12
GroundBIRD is a cosmic microwave background (CMB) experiment located at the Teide Observatory (altitude m, Spain) designed to measure large-angular-scale intensity and p…
The Simons Observatory: On-sky performance of radio-transparent multi-layer insulation (RT-MLI) using Styroace-II Styrofoam
Samuel Day-Weiss, Nicholas Galitzki, Atsuto Takeuchi +14
We present the on-sky performance of a Radio-Transparent Multi-Layer Insulation filter (RT-MLI) that uses Styroace-II styrofoam to reject ambient thermal radiation from entering a…
The Simons Observatory: Detector Polarization Angle Calibration using Sparse Wire Grid with Initial Data Sets of the Small Aperture Telescope
Hironobu Nakata, Shunsuke Adachi, Kyohei Yamada +22
Improved measurements of -modes in the cosmic microwave background can be obtained through accurate calibration of the orientation of detector antennas as projected onto the sky…
Constraints on the polarization angle oscillations of the Crab Nebula with the Simons Array and its applications to the search for axion-like particles
Tylor Adkins, Shahed Shayan Arani, Kam Arnold +27
We present a search for polarization oscillation of the Crab Nebula, also known as Tau A, at millimeter wavelengths using observations with the Simons Array, the successor experime…
Optimization procedure of the baffle of the GroundBIRD Telescope to mitigate stray light
Miku Tsujii, Tomonaga Tanaka, Alessandro Fasano +10
We presented the optimization procedures of the baffle mounted on the GroundBIRD telescope for measuring the polarization of the Cosmic Microwave Background~(CMB). The telescope em…
Broadband, Dead-Time-Free Spectrometer Using RFSoC for WISP Dark Matter Searches
Hiroki Takeuchi, Junya Suzuki, Shunsuke Adachi +1
Ultra-light dark matter candidates, such as axions and dark photons, particularly within the mass range of eV to meV, have garnered significant research interest. However, the e…
Commissioning the CMB polarization telescope GroundBIRD with the full set of detectors
Miku Tsujii, Jochem J. A. Baselmans, Jihoon Choi +39
GroundBIRD is a ground-based cosmic microwave background (CMB) experiment for observing the polarization pattern imprinted on large angular scales ( ) from the Teide Obse…
The Simons Observatory: Design, integration, and testing of the small aperture telescopes
Nicholas Galitzki, Tran Tsan, Jake Spisak +77
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5,200 m in the Ata…
A measurement method for responsivity of microwave kinetic inductance detector by changing power of readout microwaves
Hiroki Kutsuma, Makoto Hattori, Ryo Koyano +5
Superconducting detectors are a modern technology applied in various fields. The microwave kinetic inductance detector (MKID) is one of cutting-edge superconducting detector. It is…
The LiteBIRD Satellite Mission - Sub-Kelvin Instrument
A. Suzuki, P. A. R. Ade, Y. Akiba +149
Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth…
Innovative Demodulation Scheme for Coherent Detectors in CMB Experiments
K. Ishidoshiro, Y. Chinone, M. Hasegawa +3
We propose an innovative demodulation scheme for coherent detectors used in cosmic microwave background polarization experiments. Removal of non-white noise, e.g., narrow-band nois…
Calibration System with Cryogenically-Cooled Loads for CMB Polarization Detectors
M. Hasegawa, O. Tajima, Y. Chinone +3
We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation appr…
Observation of the decay
M. -C. Chang
We report the first observation of decay. These results are obtained from a data sample that contains 449 million pairs accumulated at the resonan…