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Hard X-ray Modulation Telescope
Hard X-ray Modulation Telescope (HXMT) also known as Insight () is a Chinese X-ray space observatory, launched on June 15, 2017 to observe black holes, neutron stars, active galactic nuclei and other phenomena based on their X-ray and gamma-ray emissions. Andrew Jones. It is based on the JianBing 3 imagery reconnaissance satellite series platform. The project, a joint collaboration of the Ministry of Science and Technology of China, the Chinese Academy of Sciences, and Tsinghua University, has been under development since 2000. Payload The main scientific instrument is an array of 18 NaI(Tl)/CsI(na) slat-collimated "phoswich" scintillation detectors, collimated to 5.7°×1° overlapping fields of view.HXMT.cnConfiguration (Hard X-ray telescope design) c.2004 The main NaI detectors have an area of 286 cm2 each, and cover the 20–200 keV energy range. Data analysis is planned to be by a direct algebraic method, "direct demodulation",HXMT.cnThe direct demodulation metho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Observatory
A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched in 1968, and the Soviet Orion 1 ultraviolet telescope aboard space station Salyut 1 in 1971. Space telescopes avoid the filtering and distortion ( scintillation) of electromagnetic radiation which they observe, and avoid light pollution which ground-based observatories encounter. They are divided into two types: Satellites which map the entire sky (astronomical survey), and satellites which focus on selected astronomical objects or parts of the sky and beyond. Space telescopes are distinct from Earth imaging satellites, which point toward Earth for satellite imaging, applied for weather analysis, espionage, and other types of information gathering. History Wilhelm Beer and Johann Heinrich Mädler in 1837 discussed the advantages of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Science And Technology Of China
The Ministry of Science and Technology of the People's Republic of China, formerly the State Science and Technology Commission, is the central government ministry which coordinates science and technology activities in the country. The office is located in Xicheng District, Beijing. The ministry is responsible for formulating guidelines and related policies for science and technology in China development and promoting basic and special research on science and technology. The Ministry develop human resources, including introducing foreign intellectual planning and organising international scientific and technological cooperation and talent exchanges and strengthening China's innovation capabilities in the field of international scientific research. History of ministry The predecessor of MOST was the National Technical Committee established at the 28th Plenary Session of the State Council in 1956 and was renamed as the Ministry of Science and Technology of the People's Republic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacecraft Launched In 2017
A spacecraft is a vehicle or machine designed to fly in outer space. A type of artificial satellite, spacecraft are used for a variety of purposes, including communications, Earth observation, meteorology, navigation, space colonization, planetary exploration, and transportation of humans and cargo. All spacecraft except single-stage-to-orbit vehicles cannot get into space on their own, and require a launch vehicle (carrier rocket). On a sub-orbital spaceflight, a space vehicle enters space and then returns to the surface without having gained sufficient energy or velocity to make a full Earth orbit. For orbital spaceflights, spacecraft enter closed orbits around the Earth or around other celestial bodies. Spacecraft used for human spaceflight carry people on board as crew or passengers from start or on orbit (space stations) only, whereas those used for robotic space missions operate either autonomously or telerobotically. Robotic spacecraft used to support scientific res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 In China
Events from the year 2017 in China. Incumbents Paramount leader * General Secretary of the Chinese Communist Party – Xi Jinping Head of state * President – Xi Jinping ** Vice President – Li Yuanchao Head of government * Premier – Li Keqiang ** Vice Premiers – Zhang Gaoli, Liu Yandong, Wang Yang, Ma Kai National legislature * Congress chairman – Zhang Dejiang Political advisory * Conference chairman – Yu Zhengsheng Governors * Governor of Anhui Province – Li Guoying * Governor of Fujian Province – Yu Weiguo (until 2 January), Tang Dengjie (starting 2 January) * Governor of Gansu Province – Lin Duo (until 11 April), Tang Renjian (starting 11 April) * Governor of Guangdong Province – Tang Renjian * Governor of Guizhou Province – Shen Yiqin * Governor of Hainan Province – Shen Xiaoming * Governor of Hebei Province – Zhang Qingwei (until March), Xu Qin (starting March) * Governor of Heilongjiang Province &ndas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Telescopes
Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of various ethnicities in contemporary China ** Han Chinese, the largest ethnic group in the world and the majority ethnic group in Mainland China, Hong Kong, Macau, Taiwan, and Singapore ** Ethnic minorities in China, people of non-Han Chinese ethnicities in modern China ** Ethnic groups in Chinese history, people of various ethnicities in historical China ** Nationals of the People's Republic of China ** Nationals of the Republic of China ** Overseas Chinese, Chinese people residing outside the territories of Mainland China, Hong Kong, Macau, and Taiwan * Sinitic languages, the major branch of the Sino-Tibetan language family ** Chinese language, a group of related languages spoken predominantly in China, sharing a written script (Chinese c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray Telescopes
An X-ray telescope (XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. In order to get above the Earth's atmosphere, which is opaque to X-rays, X-ray telescopes must be mounted on high altitude rockets, balloons or artificial satellites. The basic elements of the telescope are the optics (focusing or collimating), that collects the radiation entering the telescope, and the detector, on which the radiation is collected and measured. A variety of different designs and technologies have been used for these elements. Many of the existing telescopes on satellites are compounded of multiple copies or variations of a detector-telescope system, whose capabilities add or complement each other and additional fixed or removable elements (filters, spectrometers) that add functionalities to the instrument. Optics The most common methods used in X-ray optics are grazing incidence mirrors and collimated apertures. Focusing mirrors The utilization of X-r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Telescopes
A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched in 1968, and the Soviet Orion 1 ultraviolet telescope aboard space station Salyut 1 in 1971. Space telescopes avoid the filtering and distortion ( scintillation) of electromagnetic radiation which they observe, and avoid light pollution which ground-based observatories encounter. They are divided into two types: Satellites which map the entire sky (astronomical survey), and satellites which focus on selected astronomical objects or parts of the sky and beyond. Space telescopes are distinct from Earth imaging satellites, which point toward Earth for satellite imaging, applied for weather analysis, espionage, and other types of information gathering. History Wilhelm Beer and Johann Heinrich Mädler in 1837 discussed the advantages of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray Astronomy Satellite
An X-ray astronomy satellite studies X-ray emissions from celestial objects, as part of a branch of space science known as X-ray astronomy. Satellites are needed because X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites. A detector is placed on a satellite which is then put into orbit well above the Earth's atmosphere. Unlike balloons, instruments on satellites are able to observe the full range of the X-ray spectrum. Unlike sounding rockets, they can collect data for as long as the instruments continue to operate. For example, the Chandra X-ray Observatory has been operational for more than twenty one years. Active X-ray observatory satellites Satellites in use today include the XMM-Newton observatory (low to mid energy X-rays 0.1-15 keV) and the INTEGRAL satellite (high energy X-rays 15-60 keV). Both were launched by the European Space Agency. NASA has launched the Swi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoswich Detector
Phoswich detectors were developed to detect low-intensity, low-energy gamma rays, X-rays, as well as alpha and beta particles efficiently in a higher-energy ambient background. Some detector designs can measure and separately identify all energies simultaneously. A phoswich ("phosphor sandwich") is a combination of scintillators A scintillator is a material that exhibits scintillation, the property of luminescence, when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate (i.e. re-emit the absorbe ... with dissimilar pulse shape characteristics optically coupled to each other and to a common PMT (or PMTs). Pulse shape analysis distinguishes the signals from the two scintillators, identifying in which scintillator the event occurred. In 2010 development of a monolithic phoswich sensor technology was announced, departing from the discrete designs. This novel development, termed the ''continuous'' phoswic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsinghua University
Tsinghua University (; abbreviation, abbr. THU) is a National university, national Public university, public research university in Beijing, China. The university is funded by the Ministry of Education of the People's Republic of China, Ministry of Education. The university is a member of the C9 League, Double First Class University Plan, Project 985, and Project 211. Since its establishment in 1911, it has produced many notable leaders in science, engineering, politics, business, academia, and culture. As of 2022, Tsinghua University ranked 14th in the world by the 2023 QS World University Rankings and 16th globally by the 2022 ''Times Higher Education World University Rankings''. In 2021, Tsinghua ranked first in the Asia-Pacific region by ''Times Higher Education World University Rankings#Asia, THE Asia University Rankings'' and the U.S. News & World Report Best Global Universities Ranking, ''U.S. News & World Report''. History Early 20th century (1911–1949) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JianBing 3
''Jianbing'' () is a traditional Chinese street food similar to crêpes. It is a type of ''bing'' generally eaten for breakfast and hailed as "one of China's most popular street breakfasts". The main ingredients of ''jianbing'' are a batter of wheat and grain flour, eggs and sauces, cooked quickly by spreading the batter on a large frying pan or a specialized flat hotplate. It can be topped with different fillings and sauces such as ''bocui'' (, thin and crispy fried cracker), ham, chopped or diced mustard pickles, scallions and coriander, chili sauce or hoisin sauce depending on personal preference. It is often folded several times before serving. ''Jianbing'' has seen international popularization in recent years and can be found in Western cities such as London, Dubai, New York City, Portland, Oregon, Seattle, Chicago, San Francisco, Toronto, Hamilton and Sydney, sometimes with modifications to cater to local tastes. History ''Jianbing'' originated in northern China, wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
