Kinetic inductance detectors are widely used in millimeter- and submillimeter-wave astronomy, benefiting from their fast response and relative ease of fabrication. The GroundBIRD telescope employs microwave kinetic inductance detectors at 145 and 220 GHz to observe the cosmic microwave background. As a ground-based telescope, it is subject to inherent environmental systematics, namely atmospheric emission and thermal fluctuations of the focal plane temperature. This study models resonance frequency shifts induced by each source using calibrated on-site measurements of precipitable water vapor and temperature. Comparison with observational data confirms the validity of the models and identifies atmospheric loading as the dominant contributor to frequency variation under typical observation conditions.
@article{arxiv.2509.20285,
title = {GroundBIRD Telescope: Systematics Modelization of MKID Arrays Response},
author = {Yonggil Jo and Alessandro Fasano and Eunil Won and Makoto Hattori and Shunsuke Honda and Chiko Otani and Junya Suzuki and Mike Peel and Kenichi Karatsu and Ricardo Génova-Santos and Miku Tsujii},
journal= {arXiv preprint arXiv:2509.20285},
year = {2026}
}
Comments
7 pages, 8 figures, proceeding paper to the 2025 LTD Conference