中国天眼(FAST)

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中国天眼“超长待机”的背后
Huan Qiu Wang Zi Xun· 2025-06-30 02:32
Group 1 - The FAST (Five-hundred-meter Aperture Spherical Telescope) is the world's largest and most sensitive single-dish radio telescope, operating nearly 24 hours a day and providing over 5,300 hours of observational data annually [1][5] - The team is currently working on the construction of a core array around FAST, aiming to establish a comprehensive aperture array consisting of dozens of 40-meter diameter antennas by 2030 to enhance FAST's performance [1][9] - The rigorous work ethic and responsibility of the team have allowed FAST to complete its debugging phase in less than two years, significantly shorter than similar international telescopes [3][4] Group 2 - The operational reliability of FAST is crucial, as equipment failure directly impacts its performance, with a reported observation time approval rate of only 20% [5] - FAST has discovered over 1,040 pulsars, surpassing the total number discovered by other telescopes during the same period, and has conducted significant research in various fields, including neutral hydrogen surveys and gravitational wave detection [5] - The legacy of former chief scientist Nan Rendong continues to inspire the team, emphasizing the importance of innovation and excellence in maintaining FAST's leading position in radio astronomy [6][8] Group 3 - The international landscape of radio astronomy is evolving, with new projects like the Square Kilometer Array (SKA) and the next-generation Very Large Array (ngVLA) set to challenge FAST's performance by 2029 and 2035 respectively [8][9] - The mixed aperture array concept for FAST is being developed to ensure it remains at the forefront of radio astronomy, with initial prototypes already constructed and key technologies being tested [9]
构建互利共赢的国际科技合作新格局
Ke Ji Ri Bao· 2025-06-11 08:18
Core Viewpoint - China emphasizes open scientific cooperation to benefit humanity, establishing partnerships with over 160 countries and regions, and signing 119 intergovernmental agreements on scientific collaboration [2][5]. Group 1: International Cooperation Platforms - The SKA project, known as the "Earth's Giant Eye," is being developed with support from China and over ten other countries, aiming to create the world's largest radio telescope [3]. - China plays a significant role in the SKA project, contributing to key technology development and infrastructure construction [3]. - The FAST telescope, known as "China's Eye," has an open data sharing platform that serves users from dozens of countries, showcasing international collaboration in scientific research [3]. Group 2: Equal International Dialogue - Chinese and German academic institutions have innovated cooperation models, fostering a new generation of young academic leaders through various collaborative initiatives [6]. - The "Tengchong Scientist Forum" in Yunnan has become a platform for advanced academic exchanges and international cooperation in science and technology [7]. Group 3: Effective Innovation Networks - China has established over 70 "Belt and Road" joint laboratories in various fields, enhancing international scientific collaboration [8]. - The "China-Uruguay Joint Laboratory" focuses on soybean genetics research and aims to become an international scientific innovation platform [9]. Group 4: Nurturing a Cooperative Ecosystem - The "Xishuangbanna Biodiversity Platform" was launched to provide a new window for exploring tropical biodiversity, showcasing collaborative efforts in ecological research [11]. - The Chinese government is committed to creating a conducive environment for scientific innovation and cooperation, focusing on practical and efficient funding mechanisms [12].
【科技日报】“中国天眼”发现罕见掩食脉冲星
Ke Ji Ri Bao· 2025-05-23 03:44
Core Findings - A rare millisecond pulsar has been discovered based on observations from the "Chinese Sky Eye" (FAST), which orbits a companion star every 3.6 hours, with periodic eclipses lasting 0.6 hours [1][2] - This discovery is significant for understanding stellar evolution theories, compact star accretion physics, and gravitational wave generation mechanisms [1] Group 1: Discovery Details - The discovered pulsar, PSR J1928+1815, has a rotation period of 10.55 milliseconds and was confirmed to have a companion star after six months of tracking [1] - The companion star is unusually massive, comparable to the Sun, but has a very small orbit of only 500,000 kilometers, which is not typical for eclipsing pulsar companions [2] Group 2: Scientific Implications - The findings validate the theory of common envelope evolution in binary star systems, enhancing the understanding of how stars interact and exchange material [2] - The companion star may have accumulated significant material during the common envelope phase, providing insights into neutrino cooling mechanisms [2] - This unique binary system could eventually evolve into a source of gravitational waves, offering new clues for studying gravitational wave generation [2]
中国科学院第六届科苑名匠发布,“中国天眼”团队等获此殊荣
Xin Jing Bao· 2025-04-29 13:18
Core Viewpoint - The article highlights the celebration of International Labor Day by the Chinese Academy of Sciences, recognizing outstanding individuals and teams for their contributions to scientific research and innovation, particularly in addressing significant national and global challenges [1][2]. Group 1: Recognition of Individuals and Teams - Six individuals and thirteen teams were awarded the title of "Koyuan Craftsman," including notable contributions such as the development of a "Chinese solution" for red tide management by researcher Yu Zhiming and the successful construction and operation of the "Chinese Sky Eye" (FAST) telescope [1][2]. - Professor Jiang Jun from the University of Science and Technology of China has developed a machine scientist platform that integrates artificial intelligence and big data, significantly enhancing research efficiency in various fields [2]. - Yu Zhiming's innovative approach to red tide management has been recognized internationally and is now part of emergency response plans in 13 coastal provinces in China, effectively mitigating economic and social losses caused by red tides [2]. Group 2: Technological Innovations and Research Contributions - The LEAF team at the Institute of Modern Physics focuses on producing and precisely controlling low-energy high-charge heavy ion beams, providing advanced experimental conditions for nuclear astrophysics and new nuclear material research [3]. - The salt-alkali land improvement team from the Institute of Genetics and Developmental Biology has developed key technologies for breeding salt-tolerant forage and biological improvement of saline-alkali land, addressing food security and resource utilization in northern China [3]. - The "Chinese Sky Eye" (FAST) telescope has set new standards in radio astronomy, having discovered over 1,040 pulsars, surpassing the total number discovered by other international telescopes during the same period [4].