{"id":"https://openalex.org/T12450","display_name":"Radio Astronomy Observations and Technology","description":"This cluster of papers represents advancements in radio astronomy techniques and instruments, with a focus on observing the epoch of reionization, cosmic dawn, and the 21 cm signal from neutral hydrogen. It includes research on low-frequency telescopes, interferometric imaging, foreground subtraction methods, and the challenges of mitigating radio frequency interference. The Square Kilometre Array (SKA) precursor projects and wide-field surveys are also prominent in this cluster.","keywords":[{"id":"https://openalex.org/keywords/radio-astronomy","display_name":"radio astronomy","score":0.3864},{"id":"https://openalex.org/keywords/radio-telescopes","display_name":"radio telescopes","score":0.5185},{"id":"https://openalex.org/keywords/radio-interferometry","display_name":"radio interferometry","score":0.5634},{"id":"https://openalex.org/keywords/very-long-baseline-interferometry","display_name":"very long baseline interferometry","score":0.278},{"id":"https://openalex.org/keywords/square-kilometre-array","display_name":"Square Kilometre Array","score":0.5164},{"id":"https://openalex.org/keywords/radio-astronomy-instrumentation","display_name":"radio astronomy instrumentation","score":0.7123},{"id":"https://openalex.org/keywords/radio-source-catalogue","display_name":"radio source catalogue","score":0.7344},{"id":"https://openalex.org/keywords/hi-21cm-emission","display_name":"HI 21 cm emission","score":0.2399},{"id":"https://openalex.org/keywords/lofar","display_name":"LOFAR","score":0.4549},{"id":"https://openalex.org/keywords/low-frequency-radio-astronomy","display_name":"low-frequency radio astronomy","score":0.7723},{"id":"https://openalex.org/keywords/radio-sources","display_name":"radio sources","score":0.2043},{"id":"https://openalex.org/keywords/extragalactic-radio-sources","display_name":"extragalactic radio sources","score":0.2073},{"id":"https://openalex.org/keywords/ionospheric-correction","display_name":"ionospheric correction","score":0.3186},{"id":"https://openalex.org/keywords/lofar-two-metre-sky-survey","display_name":"LOFAR Two-metre Sky Survey","score":0.8123},{"id":"https://openalex.org/keywords/low-frequency-radio-continuum","display_name":"low-frequency radio continuum","score":0.9522},{"id":"https://openalex.org/keywords/northern-sky-survey","display_name":"northern sky survey","score":0.8388},{"id":"https://openalex.org/keywords/cosmic-dawn","display_name":"cosmic dawn","score":0.289},{"id":"https://openalex.org/keywords/point-source-completeness","display_name":"point-source completeness","score":0.9947},{"id":"https://openalex.org/keywords/stokes-i-maps","display_name":"Stokes I maps","score":0.9995},{"id":"https://openalex.org/keywords/stokes-v-maps","display_name":"Stokes V maps","score":0.9934},{"id":"https://openalex.org/keywords/polarisation-leakage","display_name":"polarisation leakage","score":0.8791},{"id":"https://openalex.org/keywords/stokes-q-and-u-maps","display_name":"Stokes Q and U maps","score":0.9687},{"id":"https://openalex.org/keywords/millimeter-wave-astronomy","display_name":"millimeter-wave astronomy","score":0.4426},{"id":"https://openalex.org/keywords/120-168-mhz-band","display_name":"120-168 MHz band","score":0.9981},{"id":"https://openalex.org/keywords/uv-data","display_name":"uv data","score":0.9976}],"legacy_keywords":"Radio Astronomy; Epoch of Reionization; Low-Frequency Telescopes; Interferometric Imaging; Cosmic Dawn; 21 cm Signal; SKA Precursor; Foreground Subtraction; Wide-Field Surveys; Radio Frequency Interference","ids":{"openalex":"https://openalex.org/T12450","wikipedia":"https://en.wikipedia.org/wiki/Radio_astronomy"},"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"},"siblings":[{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena"},{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies"},{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories"},{"id":"https://openalex.org/T10159","display_name":"Ionosphere and magnetosphere dynamics"},{"id":"https://openalex.org/T10251","display_name":"Solar and Space Plasma Dynamics"},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science"},{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration"},{"id":"https://openalex.org/T10463","display_name":"Pulsars and Gravitational Waves Research"},{"id":"https://openalex.org/T10477","display_name":"Astrophysics and Star Formation Studies"},{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations"},{"id":"https://openalex.org/T10787","display_name":"Lightning and Electromagnetic Phenomena"},{"id":"https://openalex.org/T11323","display_name":"Gamma-ray bursts and supernovae"},{"id":"https://openalex.org/T11445","display_name":"Origins and Evolution of Life"},{"id":"https://openalex.org/T11803","display_name":"Superconducting and THz Device Technology"},{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory"},{"id":"https://openalex.org/T12717","display_name":"Space exploration and regulation"},{"id":"https://openalex.org/T12788","display_name":"Space Science and Extraterrestrial Life"},{"id":"https://openalex.org/T12836","display_name":"History and Developments in Astronomy"},{"id":"https://openalex.org/T13080","display_name":"Advanced Differential Geometry Research"},{"id":"https://openalex.org/T13175","display_name":"Historical Astronomy and Related Studies"}],"works_count":44179,"cited_by_count":290756,"works_api_url":"https://api.openalex.org/works?filter=topics.id:T12450","updated_date":"2026-10-19T03:01:26","created_date":"2024-01-23T15:27:14"}