Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ineps..94...77a&link_type=abstract
Indian Academy of Sciences, Proceedings (Earth and Planetary Sciences) (ISSN 0370-0089), vol. 94, July 1985, p. 77-82. Research
Astronomy and Astrophysics
Astronomy
Interplanetary Medium, Ionospheric Electron Density, Ionospheric Propagation, Quasars, Radio Sources (Astronomy), Scintillation, F Region, Gravity Waves, Position (Location), Refraction, Wave Propagation
Scientific paper
Observations of angular displacements in the position of the quasar 3C 298 are reported. The observations were carried out during the period of the quasar's interplanetary scintillation (IPS) using a correlation interferometer. Changes in the apparent position of the source were interpreted with respect to variations in the declination of 3C 298. Some possible physical mechanisms for the observed displacements are examined, including: (1) refraction of radio waves in the earth's ionosphere; and (2) refraction in the interplanetary medium due to large-scale plasma density inhomogeneities. Order of magnitude calculations for both possibilities are presented, and the results are discussed.
Alurkar Sadanand K.
Bhonsle Rajaram V.
Om Vats Hari
Sharma Ajay K.
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