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Trifon Trifonov (astronomer)
Trifon Trifonov (born 15 August 1985) is a Bulgarian astronomer and astrophysicist, specializing in the discovery and characterization of extrasolar planets (exoplanets). Trifonov holds research positions at the Max Planck Institute for Astronomy (MPIA) in Heidelberg, Germany, and the Department of Astronomy at Sofia University in Bulgaria. His contributions include leading exoplanet discovery teams, developing analytical software, and engaging in multinational partnerships aimed at advancing the study of planets beyond our solar system. Research From 2014 to 2016, he worked as a postdoctoral research associate in the Department of Earth Sciences at the University of Hong Kong, expanding his expertise in exoplanet detection techniques. In 2016, he joined the Max Planck Institute for Astronomy in Heidelberg, Germany, as a postdoctoral researcher in the Planet and Star Formation department. At MPIA, he worked under the mentorship of Prof. Thomas Henning, focusing on the discove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, natural satellite, moons, stars, nebulae, galaxy, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond atmosphere of Earth, Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Egyptian astronomy, Egyptians, Babylonian astronomy, Babylonians, Greek astronomy, Greeks, Indian astronomy, Indians, Chinese astronomy, Chinese, Maya civilization, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmosphere
An atmosphere () is a layer of gases that envelop an astronomical object, held in place by the gravity of the object. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A stellar atmosphere is the outer region of a star, which includes the layers above the opaque photosphere; stars of low temperature might have outer atmospheres containing compound molecules. The atmosphere of Earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), carbon dioxide (0.04%) and trace gases. Most organisms use oxygen for respiration; lightning and bacteria perform nitrogen fixation which produces ammonia that is used to make nucleotides and amino acids; plants, algae, and cyanobacteria use carbon dioxide for photosynthesis. The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, solar wind, and cosmic rays and thus protects the organisms from genetic damage. The curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Göttingen Academy Of Sciences And Humanities
The Göttingen Academy of Sciences (name since 2023 : )Note that the German ''Wissenschaft'' has a wider meaning than the English "Science", and includes Social sciences and Humanities. is the oldest continuously existing institution among the eight scientific academies in Germany, which are united under the umbrella of the Union of German Academies of Sciences and Humanities. It has the task of promoting research under its own auspices and in collaboration with academics in and outside Germany. It has its seat in the university town of Göttingen. Its meeting room is located in the auditorium of the University of Göttingen. History The ''Königliche Gesellschaft der Wissenschaften'' (''Royal Society of Sciences'') was founded in 1751 by King George II of Great Britain, who was also Prince-Elector of the Holy Roman Empire and Duke of Brunswick-Lüneburg (House of Hanover), the German state in which Göttingen was located. The first president was the Swiss natural historian and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-source Software
Open-source software (OSS) is Software, computer software that is released under a Open-source license, license in which the copyright holder grants users the rights to use, study, change, and Software distribution, distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative, public manner. Open-source software is a prominent example of open collaboration, meaning any capable user is able to online collaboration, participate online in development, making the number of possible contributors indefinite. The ability to examine the code facilitates public trust in the software. Open-source software development can bring in diverse perspectives beyond those of a single company. A 2024 estimate of the value of open-source software to firms is $8.8 trillion, as firms would need to spend 3.5 times the amount they currently do without the use of open source software. Open-source code can be used for studying and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peer Review
Peer review is the evaluation of work by one or more people with similar competencies as the producers of the work (:wiktionary:peer#Etymology 2, peers). It functions as a form of self-regulation by qualified members of a profession within the relevant Field of study, field. Peer review methods are used to maintain quality standards, improve performance, and provide credibility. In academia, scholarly peer review is often used to determine an academic paper's suitability for publication. Peer review can be categorized by the type and by the field or profession in which the activity occurs, e.g., #Medical, medical peer review. It can also be used as a teaching tool to help students improve writing assignments. Henry Oldenburg (1619–1677) was a German-born British philosopher who is seen as the 'father' of modern scientific peer review. It developed over the following centuries with, for example, the journal ''Nature (journal), Nature'' making it standard practice in 1973. The t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nu Octantis
ν Octantis, Romanization of Greek, Latinised as Nu Octantis, is a binary star in the constellation of Octans. Unusually for having such a late greek letter in its name, it is the brightest star in this faint constellation at apparent magnitude +3.7. It is located at from Earth, and is moving away at a radial velocity of +34.4 km/s. The system has an exoplanet orbiting halfway between both stars. Characteristics This is a spectroscopic binary system, meaning the binarity was inferred from periodic Doppler shifts in the spectral lines, which correspond to the motion of the stars. Both stars take to complete an orbit around each other, being separated by a semi-major axis of 2.61 astronomical units at a somewhat elliptical orbit. The primary has a spectral type of K1IV, with the luminosity class IV indicating that it is a subgiant star that has nuclear fusion, fused up all the hydrogen at its core and has expanded. Nu Octantis A has 1.57 times the mass of the Sun, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light-year
A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Despite its inclusion of the word "year", the term should not be misinterpreted as a unit of time. The ''light-year'' is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist contexts and popular science publications. The unit most commonly used in professional astronomy is the parsec (symbol: pc, about 3.26 light-years). Definitions As defined by the International Astronomical Union (IAU), the light-year is the product of the Julian year (365.25 days, as opposed to the 365.2425-day Gregorian year or the 365.24219-day Tropical year that both approxim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gliese 486 B
Gliese may refer to: * Rochus Gliese (1891—1978), a German actor, director, production designer, and art director * Wilhelm Gliese (1915–1993), a German astronomer, best known for the Gliese Catalogue of Nearby Stars * Gliese Catalogue of Nearby Stars The ''Gliese Catalogue of Nearby Stars'' (, English ) is a star catalogue listing stars located within 25 parsecs (82 ly) of the Sun. First edition and supplements In 1957, German astronomer Wilhelm Gliese published his first star ca ..., a modern star catalog of stars located within 25 parsecs of the Earth ** Any of the stars in this catalog; see :Gliese and GJ objects {{Disambiguation, surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sofia University
Sofia University "St. Kliment Ohridski" () is a public university, public research university in Sofia, Bulgaria. It is the oldest institution of higher education in Bulgaria. Founded on 1 October 1888, the edifice of the university was constructed between 1924 and 1934 with the financial support of the brothers Evlogi Georgiev and Hristo Georgiev (patron), Hristo Georgiev (whose sculptures are now featured on its façade) and has an area of 18,624 m2 and a total of 324 premises. The university has 16 faculties and three departments, where over 21,000 students receive their education. The current Rector (academia), rector is Georgi Valchev. History The university was founded on 1 October 1888—ten years after the liberation of Bulgaria—to serve as Bulgaria's primary institution of higher education. Initially, it had four regular and three additional lecturers and 49 students. It was founded as a higher pedagogical course, it became a higher school after a few months and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Henning
Thomas K. Henning (born 9 April 1956) is a German astrophysicist. He was a director at the Max Planck Institute for Astronomy between 2001 and 2024. Henning is an expert in the field of star and planet formation. Education and career Henning studied physics and mathematics at the University of Greifswald, specializing in plasma physics. He continued his studies at the University of Jena, specializing in astronomy and astrophysics and obtaining his PhD in 1984. After joining Charles University in Prague as a postdoc (1984–1985), Henning returned to Jena where he served as an assistant at Jena Observatory, completing his habilitation in 1989. After the fall of Berlin Wall, he became a guest scientist at the Max Planck Institute for Radio Astronomy in Bonn 1989–1990 and a guest lecturer at the University of Cologne in 1991. Henning returned to the University of Jena that same year, taking over as managing scientist of the Max Planck Research Unit "Dust in Star-Forming Regions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulgaria
Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey to the south, Serbia and North Macedonia to the west, and Romania to the north. It covers a territory of and is the tenth largest within the European Union and the List of European countries by area, sixteenth-largest country in Europe by area. Sofia is the nation's capital and List of cities and towns in Bulgaria, largest city; other major cities include Burgas, Plovdiv, and Varna, Bulgaria, Varna. One of the earliest societies in the lands of modern-day Bulgaria was the Karanovo culture (6,500 BC). In the 6th to 3rd century BC, the region was a battleground for ancient Thracians, Persians, Celts and Ancient Macedonians, Macedonians; stability came when the Roman Empire conquered the region in AD 45. After the Roman state splintered, trib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
