|
Hakkı Ögelman
Hakkı Boran Ögelman (July 8, 1940 – September 4, 2011) was a Turkish physicist and astrophysicist. He was an expert on gamma ray astronomy, the physics of neutron stars, and solar energy and worked on several key topics in modern astrophysics. He made many contributions to high energy astrophysics. In his early professional career he engaged in the SAS-II Small Gamma Ray Astronomy Satellite experiment development, data analysis, and first detection and imaging of our universe in gamma rays with his NASA colleagues, as well as in other fields of physics. His main interests in the field of astrophysics were the study of gamma ray astronomy and compact objects such as neutron stars and pulsars. Ögelman worked at NASA's Goddard Space Flight Center, Middle East Technical University (METU) in Ankara, Turkey, Çukurova University in Adana, Turkey, Max Planck Institute (MPI) at Garching, Germany and the University of Wisconsin. Early life and education Hakkı Ögelman was born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma-ray Astronomy
Gamma-ray astronomy is a subfield of astronomy where scientists observe and study celestial objects and phenomena in outer space which emit cosmic electromagnetic radiation in the form of gamma rays,Astronomical literature generally hyphenates "gamma-ray" when used as an adjective, but uses "gamma ray" without a hyphen for the noun. i.e. photons with the highest energies (above 100 keV) at the very shortest wavelengths. Radiation below 100 keV is classified as X-rays and is the subject of X-ray astronomy. In most cases, gamma rays from solar flares and Earth's atmosphere fall in the MeV range, but it's now known that solar flares can also produce gamma rays in the GeV range, contrary to previous beliefs. Much of the detected gamma radiation stems from collisions between hydrogen gas and cosmic rays within our galaxy. These gamma rays, originating from diverse mechanisms such as electron-positron annihilation, the inverse Compton effect and in some cases gamma decay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field in the United States. Member of the National Academy of Sciences, Members of the National Academy of Sciences serve ''pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Congress legislated and President Abraham Lincoln signed an Act of Congress (1863) establishing the National Academy of Sciences as an independent, trusted nongovernmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TÜBİTAK National Observatory
TÜBİTAK National Observatory (, TUG) is a Observatory#Ground-based observatories, ground-based astronomical observatory operated by the TUG Institute of the Scientific and Technological Research Council of Turkey (TUBITAK). Established in 1991, it is located at an altitude of in Bakırtepe, around west-southwest of Antalya in southern Turkey. There are five telescopes installed in Bakırtepe: * RTT150 - Russian-Turkish 1.5-m Telescope (formerly AZT-22) (2001) * T100 (ACE RC1.0) - 1.0 m Ritchey–Chrétien telescope (2009) * T60 (OMI RC06) - 0.6 m Ritchey–Chrétien telescope (2008) * YT40 (Meade LX200, Meade LX200GPS) - 0.4 m Schmidt–Cassegrain telescope (2006) * ROTSEIIID Robotic Optical Transient Search Experiment Discoveries Scientists led by a Turkish astronomer from Ankara University discovered an exoplanet orbiting the giant star HD 208897, which is located at a distance of some 210 light years from the Earth. The exoplanet has a minimum mass of 1.4 Jupiter masses, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ROSAT
ROSAT (short for Röntgensatellit; in German X-rays are called Röntgenstrahlen, in honour of Wilhelm Röntgen) was a German Aerospace Center-led satellite X-ray telescope, with instruments built by West Germany, the United Kingdom and the United States. It was launched on 1 June 1990, on a Delta II rocket from Cape Canaveral, on what was initially designed as an 18-month mission, with provision for up to five years of operation. ROSAT operated for over eight years, finally shutting down on 12 February 1999. In February 2011, it was reported that the satellite was unlikely to burn up entirely while re-entering the Earth's atmosphere due to the large amount of ceramics and glass used in construction. Parts as heavy as could impact the surface. ROSAT eventually re-entered the Earth's atmosphere on 23 October 2011 over the Bay of Bengal. Overview The Roentgensatellit (ROSAT) was a joint German, U.S. and British X-ray astrophysics project. ROSAT carried a German-built imagi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total population of over 84 million in an area of , making it the most populous member state of the European Union. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France, Luxembourg, Belgium, and the Netherlands to the west. The Capital of Germany, nation's capital and List of cities in Germany by population, most populous city is Berlin and its main financial centre is Frankfurt; the largest urban area is the Ruhr. Settlement in the territory of modern Germany began in the Lower Paleolithic, with various tribes inhabiting it from the Neolithic onward, chiefly the Celts. Various Germanic peoples, Germanic tribes have inhabited the northern parts of modern Germany since classical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munich
Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is not a state of its own. It ranks as the 11th-largest city in the European Union. The metropolitan area has around 3 million inhabitants, and the broader Munich Metropolitan Region is home to about 6.2 million people. It is the List of EU metropolitan regions by GDP#2021 ranking of top four German metropolitan regions, third largest metropolitan region by GDP in the European Union. Munich is located on the river Isar north of the Alps. It is the seat of the Upper Bavaria, Upper Bavarian administrative region. With 4,500 people per km2, Munich is Germany's most densely populated municipality. It is also the second-largest city in the Bavarian language, Bavarian dialect area after Vienna. The first record of Munich dates to 1158. The city ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Agency For International Development
The United States Agency for International Development (USAID) is an agency of the United States government that has been responsible for administering civilian foreign aid and development assistance. Established in 1961 and reorganized in 1998, USAID has implemented programs in global health, disaster relief, socioeconomic development, education, environmental protection, and democratic governance. With average annual disbursements of about $23 billion since 2001, USAID has been one of the world's largest aid agencies and accounts for most U.S. foreign assistance — the highest in the world in absolute dollar terms — with missions in over 100 countries, primarily in Africa, Asia, Latin America, the Middle East, and Eastern Europe. The Trump administration is attempting to fully close the agency, pending several court cases. In early March, Secretary of State Marco Rubio announced that 83% of USAID programs would be cancelled. In late March, USAID executive Jeremy Lewin a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Foundation
The Ford Foundation is an American private foundation with the stated goal of advancing human welfare. Created in 1936 by Edsel Ford and his father Henry Ford, it was originally funded by a $25,000 (about $550,000 in 2023) gift from Edsel Ford. By 1947, after the death of the two founders, the foundation owned 90% of the Non-voting stock, non-voting shares of the Ford Motor Company. (The Ford family retained the voting shares.) Between 1955 and 1974, the foundation sold its Ford Motor Company holdings and now plays no role in the automobile company. In 1949, Henry Ford II created Ford_Motor_Company#Ford_Philanthropy, Ford Philanthropy, a separate corporate foundation that to this day serves as the philanthropic arm of the Ford Motor Company and is not associated with the foundation. For many years, the foundation's financial endowment was the largest private endowment in the world; it remains among the List of wealthiest foundations, wealthiest. For fiscal year 2023, it reporte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adana
Adana is a large city in southern Turkey. The city is situated on the Seyhan River, inland from the northeastern shores of the Mediterranean Sea. It is the administrative seat of the Adana Province, Adana province, and has a population of 1 816 750 (Seyhan, Yuregir, Cukurova, Saricam), making it the largest city in the Mediterranean Region, Turkey, Mediterranean Region of Turkey. Adana lies in the heart of Cilicia, which some say, was once one of the most important regions of the Classical antiquity, classical world. Home to six million people, Cilicia is an important agricultural area, owing to the large fertile plain of Çukurova. Adana is a centre for regional trade, healthcare, and public and private services. Agriculture and logistics are important parts of the economy. The city is connected to Tarsus, Mersin, Tarsus and Mersin by TCDD Taşımacılık, TCDD train. The closest public airport is Çukurova International Airport. Etymology The name Adana (; ; ) has been used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east, as well as with the Atlantic Ocean to its east, and the national capital and federal district of Washington, D.C. to the southwest. With a total area of , Maryland is the List of U.S. states and territories by area, ninth-smallest state by land area, and its population of 6,177,224 ranks it the List of U.S. states and territories by population, 18th-most populous state and the List of states and territories of the United States by population density, fifth-most densely populated. Maryland's capital city is Annapolis, Maryland, Annapolis, and the state's most populous city is Baltimore. Maryland's coastline was first explored by Europeans in the 16th century. Prior to that, it was inhabited by several Native Americans in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenbelt, Maryland
Greenbelt is a city in Prince George's County, Maryland, United States, and a suburb of Washington, D.C. At the 2020 United States census, 2020 census, the population was 24,921. Greenbelt is the first and the largest of the three experimental and controversial New Deal Greenbelt Towns, the others being Greenhills, Ohio, and Greendale, Wisconsin. Greenbelt was planned and built by the Federal government of the United States, federal government as an all-white town. The cooperative community was conceived in 1935 by Undersecretary of United States Department of Agriculture, Agriculture Rexford Tugwell, Rexford Guy Tugwell, whose perceived collectivist ideology attracted opposition to the Greenbelt Towns project throughout its short duration. The project came into legal existence on April 8, 1935, when United States Congress, Congress passed the Emergency Relief Appropriation Act of 1935. Under the authority granted to him by this legislation, President of the United States, Presid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geminga
Geminga is a gamma ray and x-ray pulsar source thought to be a neutron star approximately 250 parsecs (around 800 light-years) from the Sun in the constellation Gemini. Its name, attributed by its discoverer Giovanni Bignami, is both a contraction of ''Gemini gamma-ray source'', and a transcription of the words ''ghè minga'' (), meaning "it's not there" in the Milanese dialect of Lombard. The name was approved by the International Astronomical Union on 4 April 2022. Pulsar The nature of Geminga was quite unknown for 20 years after its discovery by NASA's Second Small Astronomy Satellite (SAS-2). Finally, in March 1991 the ROSAT satellite detected a periodicity of 0.237 seconds in soft x-ray emission. Thus, it is supposed that Geminga is a sort of neutron star: the degenerate core of a massive star that exploded as a supernova about 300,000 years ago. It was once thought that this nearby explosion was responsible for the low density of the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
