Overview
Cosmology is the study of the dynamics and evolution of our Universe. I study cosmology because I have a fundamental desire to understand our origin. Humankind has wrestled with cosmological ideas for millennia. However, unlike our ancestors, we live in a time when cosmological observables and theory can be used together to answer some of the most fundamental questions about how our universe began and how it evolved. These observables are being discovered and precisely characterized thanks to new technologies that allow us to look deeply into the Universe in new ways and image the cosmological landscape clearly for the first time. The core mission of the Johnson Research Group in the Astronomy Department is developing new technologies that will enable new discoveries.
Core Projects
Recent Publications
“A scalable cryogenic LED module for selectively illuminating kinetic inductance detector arrays.” Shroyer, J. E., Nelson, M., Walters, L., and Johnson, B. R. (2022) Rev. Sci. Instr., 93, 113107. |
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“The Simons Observatory: A large-diameter truss for a refracting telescope cooled to 1 K.” Crowley, K. D., Dow, P., Shroyer, J. E., Groh, J. C., Dober, B., Spisak, J., Galitzki, N., et al. (2022) Rev. Sci. Instr., 93, 055106. |
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“Development of Multi-Chroic MKIDs for Next-Generation CMB Polarization Studies.” Johnson, B. R., et al. (2018) J. Low Temp. Phys., 193, 3-4, 103-112. (arXiv) |
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“Constraining the Anomalous Microwave Emission Mechanism in the S140 Star Forming Region with Spectroscopic Observations Between 4 and 8 GHz at the Green Bank Telescope.” Abitbol, M. H., Johnson, B. R., et al. (2018) ApJ, 864, 97.
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