Abstract
Scintillation is a well-known phenomenon in astronomy, e.g. twinkling of stars due to scattering in the Earth’s atmosphere, and variability of compact radio sources due to scattering in the ionosphere and the solar wind. These examples correspond to the so-called regime of weak scattering. Radio pulsars scintillate as a result of scattering in the ionized interstellar medium, but in contrast to the previous cases, the physical régime corresponds to strong scattering. Pulsars exhibit two distinct kinds of variability, called diffractive scintillation and refractive scintillation, on timescales of minutes and weeks respectively. The physics of the various régimes of scintillation are reviewed, and some basic theoretical results are summarized. The properties of imaging in the presence of strong scattering are also discussed.
Subject
Pharmacology (medical),Complementary and alternative medicine,Pharmaceutical Science
Reference58 articles.
1. Catastrophe optics: morphologies of caustics and their diffraction patterns;Berry M. V.;Prog. Optics,1980
2. Low-frequency variability of pulsars. Mon. Not. R. astr;Blandford R.;Soc.,1985
3. Flicker of extragalactic radio sources and refractive interstellar scintillation
4. Born M. & Wolf E. 1980 Principles of optics: electromagnetic theory of propagation interference and diffraction of light. (808 pages.) New York: Pergamon Press.
5. New Limits on the Diameters of Radio Sources
Cited by
210 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献