Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.213..153b&link_type=abstract
In ESA QUASAT: A VLBI Obs. in Space p 153-155 (SEE N85-16700 07-88)
Astronomy and Astrophysics
Astronomy
Gravitational Lenses, Intergalactic Media, Interstellar Space, Quasat, Radio Wave Refraction, Spaceborne Astronomy, Very Long Base Interferometry, Active Galactic Nuclei, Quasars, Radio Galaxies, X Ray Binaries
Scientific paper
The use of the QUASAT VLBI satellite to study the refractive effects of the interstellar medium (ISM), the intracluster medium (ICM), and the intergalactic medium (IGM) is discussed. These effects are related to the study of multiply-imaged quasars subjected to gravitational lensing, since refractive effects are imposed by intervening matter along the ray paths from the original objects. The methods of VLBI are relevant since the effects are primarily manifest on the milliarcsec angular scale and finer. Studies with QUASAT will open areas of study of the ISM, ICM, and IGM themselves, with implications for matter distribution on galactic scales and larger. The studies are linked to problems of active and galactic nuclei, and active stars such as X-ray binaries and SS433 objects.
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