Aug 2026· Astronomical Telescopes + Instrumentation· Vol 14156, pp. 1415609 - 1415609-16· 0 citations· 7 references
PhysicsEngineering
Abstract
Measurements of the polarization of the cosmic microwave background are critical for modern cosmology as they constrain the physics of the early universe and cosmic inflation. BICEP Array is using a series of small-aperture polarimeters located at the South Pole to measure this signal with a projected σ(r) ≈ 0.001 by 2034. The 30/40 GHz receiver and the 150 GHz receiver have been observing the cosmic microwave background for multiple years, and data from these receivers will be included in the next published BICEP analysis result which includes all data taken through 2024. The 220/270 GHz receiver is partially completed with seven out of twelve detector modules installed, and is planned to be filled with five additional modules prior to the 2027 observation season. Finishing this receiver is a top priority for BA as the science goals of the experiment require the dust foreground cleaning this receiver will enable. On-site characterization efforts for this receiver from the 2025–26 austral summer show satisfactory spectroscopy, beam pointing, and 220 GHz efficiency, while the 270 GHz efficiency is an active area of work.
The South Pole is among the driest sites on Earth, and the resulting high atmospheric transparency makes it an excellent site for millimeter-wave astronomical observations. Nevertheless, for bolometric surveys of the cosmic microwave background (CMB), fluctuations in line-of-sight water vapor drive variable atmospheric...
KM3NeT is a research infrastructure of two neutrino telescopes under construction in the depths of the Mediterranean Sea. We present an overview of the technology of and the scientific results with its ARCA and ORCA detectors in partial configuration. Different in their scientific scope, the two detectors are based on...
C. Bozza· International Journal of Geo...· 0 citations
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment observing from an altitude of 5,200 m in the Atacama Desert in Chile. The SO Small Aperture Telescopes (SATs) will cover six spectral bands between 30 and 280 GHz primarily to search for evidence of primordial gravitational waves in th...
K. Harrington, R. Gerras, N. Galitzki et al.· 1 citation
The origin of the cosmic diffuse gamma-ray (CDG) background in the 0.3 – 10MeV energy range is a mystery that has persisted for 50 years. The best existing measurements have large systematic uncertainties, and the latest theoretical models based on emission from active galactic nuclei and supernovae differ significantl...
P. Bloser, W. Vestrand, M. Hehlen et al.· Hard X-Ray, Gamma-Ray, and N...· 0 citations
The decametre radio sky (∼ 10--30 MHz) remains largely unexplored due to strong ionospheric distortions and severe radio-frequency interference. Despite its scientific potential, including access to steep-spectrum synchrotron emission from aged electron populations and coherent radio emission from planetary and stellar...
C. Cordun, C. Groeneveld, H. Edler et al.· Astronomy & Astrophysics· 0 citations
The IceCube Neutrino Observatory instruments one cubic kilometer of deep-glacial ice between 1450 m and 2450 m below the surface at the geographic South Pole to detect neutrinos via Cherenkov radiation of relativistic charged particles produced in their interactions. This detector is responsible for a number of key obs...
A. Eimer· 0 citations
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