Numerical simulations of scattering in the interstellar medium applied to rapid radio variability in the quasar 0917 + 624

Details Numerical simulations of scattering in the interstellar medium applied to rapid radio variability in the quasar 0917 + 624 Numerical simulations of scattering in the interstellar medium applied to rapid radio variability in the quasar 0917 + 624

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224l...9w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. L9-L12.

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Computational Astrophysics, Extragalactic Radio Sources, Interstellar Extinction, Interstellar Matter, Quasars, Radio Spectra, Very Long Base Interferometry

Scientific paper

Variability of compact extragalactic radio sources with timescales of a few hours to days and amplitudes of up to 25 percent has been detected at 6 and 11 cm wavelengths. Numerical calculations are presented to explain these variations by refractive scattering in the interstellar medium. A single screen model with clouds of Gaussian electron density profiles reproduces the observations well for a given set of conditions.

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