A Radio Technosignature Search of Six Resonant Sub-Neptunes Orbiting HD 110067

• Published in: Research notes of the AAS Vol. 8; no. 1; pp. 37 - 36
• Main Authors: Choza, Carmen, Croft, Steve, Siemion, Andrew P. V., Sheikh, Sofia, Lebofsky, Matthew, MacMahon, David H. E., Drew, Jamie, Worden, S. Pete
• Format: Journal Article
• Language: English
• Published: The American Astronomical Society 31.01.2024
• Subjects: Exoplanets; Radio astronomy; Search for extraterrestrial intelligence; Technosignatures
• ISSN: 2515-5172; 2515-5172
• DOI: 10.3847/2515-5172/ad235f

Abstract We describe archival observations and analysis of the HD 110067 planetary system using the Green Bank Telescope (GBT) as part of the Breakthrough Listen search for technosignatures. The star hosts six sub-Neptune planets in resonant orbits, and we tune the drift rate range of our search to match the properties of the system derived by Luque et al. Our observations cover frequencies from 1 to 11.2 GHz, using the GBT’s L , S , C , and X -band receivers, to an equivalent isotropic radiated power limit of ∼3 × 10 12  W. No technosignatures were found, but this unusual system remains an interesting target for future technosignature searches.