china sky eye, upgraded again!
2024-09-27
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on the occasion of the eighth anniversary of the completion of fast, the world's largest single-aperture spherical radio telescope,construction of china sky eye fast core array test prototypeofficially launched on september 25, it is expected to further significantly improve the astronomical observation capabilities of the fast telescope.
in order to further enhance fast's scientific observation capabilities and maintain its leading scientific advantages, the scientific research team proposed a low-cost, quickly implementable radio telescope array solution.make full use of the advantages of the excellent electromagnetic environment within 5 kilometers around fast to build 24 40-meter-diameter fully movable radio telescopes to form a comprehensive aperture array with fast, namely the fast core array.
jiang peng, deputy director of the national astronomical observatory of the chinese academy of sciences and director of the fast operation and development center, said that compared with the 500-meter-diameter spherical telescope, the construction of a 40-meter-diameter radio telescope itself is not difficult, but it has to reach the same level as the large-diameter fast. however, it faces two key technical problems in improving the effect of network observation. the first is a high-performance normal-temperature receiver, which the team has never had before; the second is comprehensive aperture data processing technology, especially data processing technology for matching telescopes with different apertures, which currently has no particularly mature experience in china. , all require technological breakthroughs.
the fast core array will effectively improve observation resolution and imaging capabilities
fast core array renderings
china sky eye fast is the world's largest and most sensitive single-aperture radio telescope, and its comprehensive performance has reached the international leading level.since its operation, fast has achieved a number of important original results in the fields of pulsars, fast radio bursts, and nanohertz gravitational waves.
zhu weiwei, researcher at the national astronomical observatory of the chinese academy of sciences and chief scientist of the fast operation and development center, said that compared with the operating 100-meter-diameter radio telescope, fast's sensitivity is an order of magnitude higher, but its resolution is higher than that of world-class array telescopes. much lower. the resolving power is related to the size of the aperture. adding some auxiliary telescopes around fast is equivalent to turning it into a telescope with a large aperture. however, only some small places in this large-aperture telescope actually have mirrors. , then it can have very good resolving power, so that the already very sensitive telescope suddenly has an imaging capability that can resolve space. this is an improvement in capability.
it is understood that the fast core array will effectively improve its resolution, precise positioning and fine mapping capabilities, and greatly expand the existing scientific research fields, especially in gravitational wave events, fast radio bursts, gamma ray bursts, supernovae, and tidal disruption of black holes. plays a major role in events. in addition to astrophysics research, the fast core array can also play a role in deep space exploration fields such as near-earth object early warning and deep space satellite communications, playing an important strategic supporting role in my country's aerospace field.
source: cctv news client
editor: li qinxin
editor: an yilun
approval: li bei
