Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984em%26p...31..301m&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 31, Dec. 1984, p. 301-311.
Astronomy and Astrophysics
Astronomy
13
Astronomical Models, Cometary Atmospheres, Halley'S Comet, Plasma Interactions, Solar Wind, Hydrodynamic Equations, Ionopause, Magnetic Signatures, Modes, One Dimensional Flow, Plasma-Particle Interactions, Shock Waves, Steady State
Scientific paper
A quasi-steady one-dimensional hydrodynamic model is used to study the various modes of interaction between the solar wind and a medium-bright water-dominated comet approaching the sun. It is found through a series of calculations that at large heliocentric distances (greater than 5 AU) the solar wind penetrates to the surface of the comet. As mass loading reaches a critical value, a standing shock wave is created in the solar wind upstream from the cometary nucleus, and as distance decreases, the cometary atmosphere becomes dense enough to stand off the solar wind ahead of the nuclear surface. It is shown that the present scenario of solar wind/comet interaction is qualitatively valid for comets with different sizes, chemical compositions and optical properties.
Flammer K. R.
Mendis Asoka D.
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