On the variability of extragalactic sources in the decimeter range and their correlation with galactic structures

Details On the variability of extragalactic sources in the decimeter range and their correlation with galactic structures On the variability of extragalactic sources in the decimeter range and their correlation with galactic structures

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...7925974s&link_type=abstract

On the variability of extragalactic sources in the decimeter range and their correlation with galactic structures Transl. into

Mathematics

Probability

Electron Density (Concentration), Extragalactic Radio Sources, Galactic Structure, Variability, Electromagnetic Radiation, Pulsars, Radiation Distribution, Red Shift, Scintillation

Scientific paper

It is shown that all of the extragalactic radio sources presently known are variable in the decimeter range (lambda or = 30 cm) and are projected on the large continuum radio structure of the galaxy: loops, spurs, ridges. Probability that coordinates could coincide is or = 10 to the minus 7 power. The variations in the intensity are explained by scintillations (regime of focusing radiation) on the large-scale irregularities of electron density in the medium of loops, spurs and ridges with the dimension a magnitude of approximately 10 to the 13th power cm. A correlation of the characteristics of radiation of the sources with their position relative to the galactic loop is considered. Based on the known experimental data, it is shown that the angle of scattering of extragalactic radiation and the dispersion measures of pulsars projecting on the loops is considerably larger than those of the sources lying outside the loops.

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