搜尋結果
Taiwan,[II][k] officially the Republic of China (ROC),[I][l] is a country[27] in East Asia.[o] It is located at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. The territories controlled by the ...
Taiwan Semiconductor Manufacturing Company Limited ( TSMC; also called Taiwan Semiconductor) [4] [5] is a Taiwanese multinational semiconductor contract manufacturing and design company. It is the world's second most valuable semiconductor company, [6] the world's largest dedicated independent ("pure-play") semiconductor foundry, [7] and its ...
- 73,090 (2022)
- US$73.67 billion (2022)
- Instruments
- Results
- History
- De-Orbit
- See Also
- External Links
CGRO carried a complement of four instruments that covered an unprecedented six orders of the electromagnetic spectrum, from 20 keVto 30 GeV (from 0.02 MeV to 30000 MeV). Those are presented below in order of increasing spectral energy coverage:
Basic results
1. The EGRET instrument conducted the first all sky survey above 100 MeV. Using four years of data it discovered 271 sources, 170 of which were unidentified. 2. The COMPTEL instrument completed an all sky map of 26 Al (a radioactive isotope of aluminum). 3. The OSSE instrument completed the most comprehensive survey of the galactic center, and discovered a possible antimatter"cloud" above the center. 4. The BATSE instrument averaged one gamma ray burst event detection per day for a total of a...
GRB 990123
Gamma ray burst 990123 (23 January 1999) was one of the brightest bursts recorded at the time, and was the first GRB with an optical afterglow observed during the prompt gamma ray emission (a reverse shock flash). This allowed astronomers to measure a redshiftof 1.6 and a distance of 3.2 Gpc. Combining the measured energy of the burst in gamma-rays and the distance, the total emitted energy assuming an isotropic explosion could be deduced and resulted in the direct conversion of approximately...
Miscellaneous results
1. The completion of both a pulsar survey and a supernova remnantsurvey 2. The discovery of terrestrial gamma ray sources in 1994 that came from thunderclouds
Proposal
1. Work started in 1977.
Funding and Development
1. CGRO was designed for in-orbit refuelling/servicing.
After one of its three gyroscopes failed in December 1999, the observatory was deliberately de-orbited. At the time, the observatory was still operational; however the failure of another gyroscope would have made de-orbiting much more difficult and dangerous. With some controversy, NASA decided in the interest of public safety that a controlled cra...
- 5 April 1991, 14:22:45 UTC
- 9 years, 2 months
- 16,329 kilograms (35,999 lb)
台 tái Taipei 台北 臺北 Huadong claimed since 1949 the founding of the PRC; it has not been governed by the PRC since its founding Xikang 西康 西康 Xīkāng 康 kāng Kangding (49-50) Ya'an (50-55) 康定 雅安 康定 雅安 Xinan 1955 abolished → Sichuan & Qamdo
Tokugawa Ieyasu [a] ( 徳川 家康, January 31, 1543 – June 1, 1616; born Matsudaira Takechiyo and later taking other names [b]) was the founder and first shōgun of the Tokugawa Shogunate of Japan, which ruled from 1603 until the Meiji Restoration in 1868.
Green Island, also known by other names, is a small volcanic island in the Pacific Ocean about 33 km (21 mi) off the eastern coast of Taiwan. It is 15.092 km 2 (5.83 sq mi) at high tide and 17.329 km 2 (6.69 sq mi) at low tide, making it the seventh-largest island in Taiwan Area. The island is administered as Lyudao Township, [1] [2] a rural ...
Conor Cummins (born 27 May 1986, in Douglas, Isle of Man) is a Manx motorcycle road racer who rides in British racing events, competing in the British Superstock Championship, as well as in specialist closed-road events at his home Isle of Man TT races and in Northern Ireland.
