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Center For Computational Astrophysics
The (NAOJ) is an astronomical research organisation comprising several facilities in Japan, as well as an observatory in Hawaii and Chile. It was established in 1988 as an amalgamation of three existing research organizations - the Tokyo Astronomical Observatory of the University of Tokyo, International Latitude Observatory of Mizusawa, and a part of Research Institute of Atmospherics of Nagoya University. In the 2004 reform of national research organizations, NAOJ became a division of the National Institutes of Natural Sciences. Facilities ;Mitaka Campus (Mitaka, Tokyo. ) :The Headquarters, Astronomy Data Center, Advanced Technology Center, Public Relations Center :Solar Flare Telescope, Sunspot Telescope, TAMA 300 gravitational wave detector : Tokyo Photoelectric Meridian Circle :Historical instruments: Solar Tower Telescope, 65cm refractor dome, 20cm refractor dome ;Nobeyama Radio Observatory (Minamimaki, Nagano, ) :45m Millimeter Radio Telescope, Nobeyama Radio Pola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Antennas At ALMA's Operations Support Facility
European, or Europeans, or Europeneans, may refer to: In general * ''European'', an adjective referring to something of, from, or related to Europe ** Ethnic groups in Europe ** Demographics of Europe ** European cuisine, the cuisines of Europe and other Western countries * ''European'', an adjective referring to something of, from, or related to the European Union ** Citizenship of the European Union ** Demographics of the European Union In publishing * ''The European'' (1953 magazine), a far-right cultural and political magazine published 1953–1959 * ''The European'' (newspaper), a British weekly newspaper published 1990–1998 * ''The European'' (2009 magazine), a German magazine first published in September 2009 *''The European Magazine'', a magazine published in London 1782–1826 *''The New European'', a British weekly pop-up newspaper first published in July 2016 Other uses * * Europeans (band), a British post-punk group, from Bristol See also * * * Europe (disam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravitational Wave Detector
A gravitational-wave detector (used in a gravitational-wave observatory) is any device designed to measure tiny distortions of spacetime called gravitational waves. Since the 1960s, various kinds of gravitational-wave detectors have been built and constantly improved. The present-day generation of laser interferometers has reached the necessary sensitivity to detect gravitational waves from astronomical sources, thus forming the primary tool of gravitational-wave astronomy. The first direct detection of gravitational waves made in 2015 by the Advanced LIGO observatories, a feat which was awarded the 2017 Nobel Prize in Physics. Challenge The direct detection of gravitational waves is complicated by the extraordinarily small effect the waves produce on a detector. The amplitude of a spherical wave falls off as the inverse of the distance from the source. Thus, even waves from extreme systems such as merging binary black holes die out to a very small amplitude by the time they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hilo, Hawaii
Hilo () is a census-designated place (CDP) and the largest settlement in Hawaii County, Hawaii, United States, which encompasses the Island of Hawaii. The population was 44,186 according to the 2020 census. It is the fourth-largest settlement in the state of Hawaii and largest settlement in the state outside of Oahu. Hilo is the county seat of the County of Hawaii and is in the District of South Hilo. The city overlooks Hilo Bay and has views of two shield volcanoes, Mauna Loa, an active volcano, and Mauna Kea, a dormant volcano. Mauna Kea is the site of some of the world's most important ground-based astronomical observatories. The Hilo bay-front has been destroyed by tsunamis twice. The majority of human settlement in Hilo stretches from Hilo Bay to Waiākea-Uka, on the flanks of the volcanoes. Hilo is home to the University of Hawaii at Hilo, ʻImiloa Astronomy Center, as well as the Merrie Monarch Festival, a week-long celebration, including three nights of competi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauna Kea
Mauna Kea ( or ; ; abbreviation for ''Mauna a Wākea''); is a dormant volcano on the island of Hawaii. Its peak is above sea level, making it the highest point in the state of Hawaii and second-highest peak of an island on Earth. The peak is about higher than Mauna Loa, its more massive neighbor. Mauna Kea is unusually topographically prominent for its height: its wet prominence is fifteenth in the world among mountains, at ; its dry prominence of is second in the world, only after Mount Everest This dry prominence is greater than Mount Everest's height above sea level of , and some authorities have labelled Mauna Kea the tallest mountain in the world, from its underwater base. It is about one million years old and thus passed the most active shield stage of life hundreds of thousands of years ago. In its current post-shield state, its lava is more viscous, resulting in a steeper profile. Late volcanism has also given it a much rougher appearance than its neighbori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subaru (telescope)
is the telescope of the National Astronomical Observatory of Japan, located at the Mauna Kea Observatory on Hawaii. It is named after the open star cluster known in English as the Pleiades. It had the largest monolithic primary mirror in the world from its commissioning until 2005. Overview The Subaru Telescope is a Ritchey-Chretien reflecting telescope. Instruments can be mounted at a Cassegrain focus below the primary mirror; at either of two Nasmyth focal points in enclosures on the sides of the telescope mount, to which light can be directed with a tertiary mirror; or at the prime focus in lieu of a secondary mirror, an arrangement rare on large telescopes, to provide a wide field of view suited to deep wide-field surveys. In 1984, the University of Tokyo formed an engineering working group to develop and study the concept of a telescope. In 1985, the astronomy committee of Japan's science council gave top priority to the development of a "Japan National Large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaii (island)
Hawaii ( ; haw, Hawaii ) is the largest island in the United States, located in the state of Hawaii. It is the southeasternmost of the Hawaiian Islands, a chain of volcanic islands in the North Pacific Ocean. With an area of , it has 63% of the Hawaiian archipelago's combined landmass. However, it has only 13% of Hawaiʻi's population. The island of Hawaiʻi is the third largest island in Polynesia, behind the two main islands of New Zealand. The island is often referred to as the Island of Hawaii or Hawaii Island to distinguish it from the state. It is also referred to as the Big Island. Administratively, the island is coextensive with Hawaii County. As of the 2020 census, the population was 200,629. The county seat and largest town is Hilo. There are no incorporated cities in Hawaiʻi County. History Hawaii is said to have been named after Hawaiiloa, the legendary Polynesian navigator who first discovered it. Other accounts attribute the name to the legendary re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gifu
is a city located in the south-central portion of Gifu Prefecture, Japan, and serves as the prefectural capital. The city has played an important role in Japan's history because of its location in the middle of the country. During the Sengoku period, various warlords, including Oda Nobunaga, used the area as a base in an attempt to unify and control Japan. Gifu continued to flourish even after Japan's unification as both an important '' shukuba'' along the Edo period NakasendōNakasendo to Shukuba-machi Gifu City Hall. Accessed September 9, 2007. and, later, as one of Japan's fashion centers. It has been designated a core city by the national government. Overview Located on the[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hida, Gifu
is a city located in Gifu, Japan. , the city had an estimated population of 24,726, and a population density of 31 persons per km2, in 8,905 households. The total area of the city was . The official ''kanji'' for the city is actually 飛驒, which uses the old rendering of the 騨 character. However, the 驒 characters is not included on the official list of usable characters (as decided by the Ministry of Internal Affairs and Communications), so the 騨 character is often used outside of the city. Geography Hida is the northernmost city in Gifu Prefecture, and is located in the northern part of the Hida Highlands bordering on Toyama Prefecture to the north. The majority of the area of the city is forested, with many mountains exceeding 1,000 meters within the city borders. The northeastern edge of the Hida Mountain range exceeds 2,000 meters. Most of the population is concentrated along river terraces along the Jinzū River and the Takahara River. Climate The city has a cli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KAGRA
The Kamioka Gravitational Wave Detector (KAGRA), is a large interferometer designed to detect gravitational waves predicted by the general theory of relativity. KAGRA is a Michelson interferometer that is isolated from external disturbances: its mirrors and instrumentation are suspended and its laser beam operates in a vacuum. The instrument's two arms are three kilometres long and located underground at the Kamioka Observatory which is near the Kamioka section of the city of Hida in Gifu Prefecture, Japan. KAGRA is a project of the gravitational wave studies group at the Institute for Cosmic Ray Research (ICRR) of the University of Tokyo. It became operational on 25 February 2020, when it began data collection. It is Asia's first gravitational wave observatory, the first in the world built underground, and the first whose detector uses cryogenic mirrors. It is expected to have an operational sensitivity equal to, or greater than, LIGO and Virgo. The Kamioka Observatory special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ishigaki, Okinawa
is a city in Okinawa Prefecture, Japan. It includes Ishigaki island and the Senkaku Islands territory. The city is the political, cultural, and economic center of the Yaeyama Islands. New Ishigaki Airport serves the city. As of December 2012, the city has an estimated population of 48,816 and a population density of 213 persons per km2. The total area is 229.00 km2. It is also the location of the disputed Senkaku Islands (see below in the Geography section). History The current city of Ishigaki was founded in 1908 as Yaeyama Village, an amalgamation of the Ishigaki, Ōhama, and Miyara magiri. In 1914 it was renamed to Ishigaki Village, and grew to become Ishigaki Town in 1926. Ishigaki was elevated to city status on July 10, 1947. Historical footnote: One of the first Frenchmen ever to visit Japan, Guillaume Courtet, came ashore at Ishigaki in 1636. Geography The city of Ishigaki covers the entirety of Ishigaki Island (). The island is surrounded by coral reefs. The hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satsumasendai, Kagoshima
is a Cities of Japan, city located in Kagoshima Prefecture, Japan. The modern city of Satsumasendai was established on October 12, 2004, from the merger of the city of Sendai, the towns of Hiwaki, Kagoshima, Hiwaki, Iriki, Kagoshima, Iriki, Kedōin, Kagoshima, Kedōin and Tōgō, Kagoshima, Tōgō, and the Koshikijima Islands (which consisted of the villages of Kamikoshiki, Kagoshima, Kamikoshiki, Kashima, Kagoshima, Kashima, Sato, Kagoshima, Sato and Shimokoshiki, Kagoshima, Shimokoshiki, all from Satsuma District, Kagoshima, Satsuma District). As of May 2017, the city has an estimated population of 96,411 and a population density of 140 persons per km2. The total area is 683.50 km2. The city has regular Shinkansen services to Kagoshima, Kagoshima, Kagoshima City and Yatsushiro, Kumamoto, Yatsushiro. The city is also home to Kagoshima Immaculate Heart University, founded in 1994, which has a small population of foreign students. A major employer is the Sendai Nuclear Pow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chichi-jima
, native_name_link = , image_caption = Map of Chichijima, Anijima and Otoutojima , image_size = , pushpin_map = Japan complete , pushpin_label = Chichijima , pushpin_label_position = , pushpin_map_alt = , pushpin_relief = , pushpin_map_caption = , map_custom = , nickname = , location = Pacific Ocean , coordinates = , archipelago = Ogasawara Islands , total_islands = , major_islands = , area_km2 = 23.45 , length_km = , width_km = , coastline_km = , highest_mount = , elevation_m = 326 , country = Japan , country_admin_divisions_title = Prefecture , country_admin_divisions = Tokyo , country_admin_divisions_title_1 = Subprefecture , country_admin_divisions_1 = Ogasawara Subprefecture , country_admin_divisions_title_2 = Village , country_admin_divisions_2 = Ogasawara , pop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
