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Subject Item
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TianQin 天琴计划 TianQin 天琴 TianQin Tchien-čchin
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TianQin (chinois : 天琴计划, Tiān qin jìhuà, « programme Tianqin ») est un projet d'observatoire spatial d'ondes gravitationnelles qui prévoit la mise en orbite terrestre de trois véhicules spatiaux. Porté par l'Université Sun Yat-sen, la date de lancement des véhicules est prévue entre 2025 et 2030. The TianQin Project (Chinese: 天琴计划) is a proposed space-borne gravitational-wave observatory (gravitational-wave detector) consisting of three spacecraft in Earth orbit. The TianQin project is being led by Professor (Chinese: 罗俊), President of Sun Yat-sen University, and is based in the university's Zhuhai campus. Construction on project-related infrastructure, which will include a research building, ultra-quiet cave laboratory, and observation center, began in March 2016. The project is estimated to cost 15 billion RMB (US$2.3 billion), with a projected launch date in 2030s. In December 2019, China launched "Tianqin-1, its first satellite for space-based gravitational wave detection." O Projeto TianQin (chinês: 天琴计划) é uma proposta de transportadas pelo espaço (detector de ondas gravitacionais) que consiste em três espaçonaves em órbita terrestre. O projeto TianQin está sendo liderado pelo professor Luo Jun (chinês: 罗俊), presidente da , e está baseado no campus de Zhuhai da universidade. A construção da infraestrutura relacionada ao projeto, que incluirá um edifício de pesquisa, um laboratório em caverna ultrassilenciosa e um centro de observação, começou em março de 2016. 天琴（てんきん）は中国が計画している宇宙空間における重力波望遠鏡である。 天琴计划（TianQin Project）是一个中山大学正在进行中的空间引力波探测计划。该计划由中国科学院院士、时任中山大学校长罗俊团队负责，其地面基础设施位于中山大学珠海校区。该项目由引力波天文台、在地球轨道上的3颗全同卫星和其他地面基础设施组成。 2019年12月20日，天琴一号试验卫星由长征四号乙运载火箭发射进入轨道，天琴计划进入试验阶段。目前，该项目的基础设施建设已经接近完成，探测项目预计在2025到2030年之间正式启动。 Projekt Tchien-čchin (čínsky pchin-jinem Tiānqín jì​huà, znaky zjednodušené 天琴计划) je navrhovaný vesmírný detektor gravitačních vln skládající se ze tří kosmických lodí na oběžné dráze Země. Projekt Tchien-čchin vede profesor , rektor Sunjatsenovy univerzity, a sídlí v kampusu univerzity ve městě Ču-chaj. Stavba s projektem související infrastruktury zahrnující výzkumné budovy, ultra-tiché podzemní laboratoře a pozorovací centrum, začala v březnu 2016. Cena projektu se odhaduje na 2,3 miliardy USD, přičemž předpokládané datum startu je mezi roky 2025 a 2030.
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dbo:abstract
O Projeto TianQin (chinês: 天琴计划) é uma proposta de transportadas pelo espaço (detector de ondas gravitacionais) que consiste em três espaçonaves em órbita terrestre. O projeto TianQin está sendo liderado pelo professor Luo Jun (chinês: 罗俊), presidente da , e está baseado no campus de Zhuhai da universidade. A construção da infraestrutura relacionada ao projeto, que incluirá um edifício de pesquisa, um laboratório em caverna ultrassilenciosa e um centro de observação, começou em março de 2016. The TianQin Project (Chinese: 天琴计划) is a proposed space-borne gravitational-wave observatory (gravitational-wave detector) consisting of three spacecraft in Earth orbit. The TianQin project is being led by Professor (Chinese: 罗俊), President of Sun Yat-sen University, and is based in the university's Zhuhai campus. Construction on project-related infrastructure, which will include a research building, ultra-quiet cave laboratory, and observation center, began in March 2016. The project is estimated to cost 15 billion RMB (US$2.3 billion), with a projected launch date in 2030s. In December 2019, China launched "Tianqin-1, its first satellite for space-based gravitational wave detection." The project's name combines the Chinese words "Tian" (天), meaning sky or heavens, and "Qin" (琴), meaning stringed instrument. This name refers to the metaphorical concept of gravitational waves "plucking the strings" by causing fluctuations in the 100,000 kilometer laser beams stretching between each of the three TianQin spacecraft. The observatory will consist of three identical drag-free controlled spacecraft in high Earth orbits at an altitude of about 100,000 km. The nominal source of the observatory is a white-dwarf binary RX J0806.3+1527 (also known as HM Cancri). This could serve as a good calibration source for the TianQin gravitational wave observatory. Similar configuration of geocentric orbit space-borne gravitational wave detectors have been developed since 2011, and was shown to have favorable properties for observing intermediate-mass and massive black-hole binaries. Apart from Galactic binaries, the TianQin observatory can also detect sources like massive black hole binaries, extreme mass ratio inspirals, stellar-mass black hole binary inspirals, and stochastic gravitational wave background, etc. The detection rate for massive black hole binaries is expected to be as high as about 60 per year, and TianQin would have accurate estimate to the source's parameters, which enable the potential for distinguishing the seed models for massive black holes, as well as issuing early warning for nearby mergers.It can also be used to test the no-hair theorem or constrain modified gravity. 天琴（てんきん）は中国が計画している宇宙空間における重力波望遠鏡である。 Projekt Tchien-čchin (čínsky pchin-jinem Tiānqín jì​huà, znaky zjednodušené 天琴计划) je navrhovaný vesmírný detektor gravitačních vln skládající se ze tří kosmických lodí na oběžné dráze Země. Projekt Tchien-čchin vede profesor , rektor Sunjatsenovy univerzity, a sídlí v kampusu univerzity ve městě Ču-chaj. Stavba s projektem související infrastruktury zahrnující výzkumné budovy, ultra-tiché podzemní laboratoře a pozorovací centrum, začala v březnu 2016. Cena projektu se odhaduje na 2,3 miliardy USD, přičemž předpokládané datum startu je mezi roky 2025 a 2030. Název projektu kombinuje čínská slova tchien (天), což znamená obloha nebo nebe, a čchin (琴), což je strunný nástroj. Název se vztahuje k metaforickému pojetí gravitačních vln jako „vibrujících strun“ tím, že způsobí výkyvy ve 100 000 km dlouhém laserovém paprsku táhnoucím se mezi každou ze tří kosmických lodí detektoru. 天琴计划（TianQin Project）是一个中山大学正在进行中的空间引力波探测计划。该计划由中国科学院院士、时任中山大学校长罗俊团队负责，其地面基础设施位于中山大学珠海校区。该项目由引力波天文台、在地球轨道上的3颗全同卫星和其他地面基础设施组成。 2019年12月20日，天琴一号试验卫星由长征四号乙运载火箭发射进入轨道，天琴计划进入试验阶段。目前，该项目的基础设施建设已经接近完成，探测项目预计在2025到2030年之间正式启动。 TianQin (chinois : 天琴计划, Tiān qin jìhuà, « programme Tianqin ») est un projet d'observatoire spatial d'ondes gravitationnelles qui prévoit la mise en orbite terrestre de trois véhicules spatiaux. Porté par l'Université Sun Yat-sen, la date de lancement des véhicules est prévue entre 2025 et 2030.
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