2018/12/11 by Liju Philip, Zara Abdurashidova, H. C. Chiang +10 · 1 citation
Physics and Astronomy · Chemistry · #Radio Astronomy Observations and Technology #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #Redshift #Sky #Physics #Polarization (electrochemistry) #Brightness #Stars #Optics #Sky brightness #Brightness temperature #Measure (data warehouse) #Remote sensing #Astrophysics #Geography #Galaxy #Computer science #Chemistry
paper · doi:10.1142/s2251171719500041
openalex publication_date 2018/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
We introduce Probing Radio Intensity at high-Z from Marion (PRI Z M), a new experiment designed to measure the globally averaged sky brightness, including the expected redshifted 21[Formula: see text]cm neutral hydrogen absorption feature arising from the formation of the first stars. PRI Z M consists of two dual-polarization antennas operating at central frequencies of 70 and 100[Formula: see text]MHz, and the experiment is located on Marion Island in the sub-Antarctic. We describe the initial design and configuration of the PRI Z M instrument that was installed in 2017, and we present preliminary data that demonstrate that Marion Island offers an exceptionally clean observing environment, with essentially no visible contamination within the FM band.