6 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…
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…
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…
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…