A quasar (/ ˈkweɪzɑːr / KWAY-zar) is an extremely luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by accretion onto a supermassive black hole with a mass ranging from millions to tens of billions of solar masses, surrounded by a gaseous accretion disc.

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QUASAT, which stands for QUASAR SATELLITE, is the name given to a new mission being studied by NASA. The QUASAT mission concept involves a free flying Earth orbiting large radio telescope, which will observe astronomical radio sources …

The QUASAT mission concept involves a free-flying earth- orbiting large radio telescope, which will observe astronomical radio sources simultaneously with ground radio telescopes.

QUASAT, a very long baseline interferometry (VLBI) mission in space. Science requirements for this mission have been defined by the NASA OVLBI Technical Working Group and the European Space Agency QUASAT Working Group (Paris, Oct. 1983). The mission concept involves a free-flying high-earth-orbiting spacecraft which carries a

major ground-based VLBI networks and arrays. The mission, dubbed QUASAT, was received favourably in both ESA and NASA, with the result that formal Assessment Studies are scheduled to begin in both agencies in October 1983. THE ADVANTAGES OF ORBITING ANTENNAS FOR VLBI A space VLBI system (Figure 1), and QUASAT in particular, offers

Feb 20, 2025 · Launch/Orbital information for QUASAT; Telecommunications information for QUASAT; Experiments on QUASAT; Data collections from QUASAT; Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

Quadsat enables the SATCOM and defense industries to gain vital insights about RF systems and the spectrum for validation, compliance and optimization purposes, strengthening global connectivity and security.

The QUASAT radioastronomy satellite of the European Space Agency (ESA) is presently undergoing its Phase-A Study. It will be an antenna of about 15 meters diameter, orbiting the earth on an elliptical orbit optimised for high quality imaging with the …

Jan 1, 1984 · The proposed QUASAT mission, presently being assessed by ESA and NASA, is a free-flying spacecraft carrying a 15 m radio frequency antenna in an elliptical orbit with perigee of about 4000 km and...