Interactions between solar wind and comets
地球与行星物理论评, 2023 Comets are a class of small, irregularly shaped objects in a solar system consisting mainly of volatile materials. During the approach of a comet to the sun, the neutral component of the volatile matter released by heating in the nucleus becomes charged ...
Chuanpeng Hou, Jiansen He, Jingyu Peng
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The dynamical history of comet Halley [PDF]
International Astronomical Union Colloquium, 1985 AbstractThe history of the attempts to predict the motion of comet Halley is outlined and the importance of the so-called nongravitational forces acting upon this comet is emphasized. Recent orbital work of the International Halley Watch Astrometry Network is reviewed. Comet Halley’s transverse nongravitational parameter is positive and nearly constant
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Models for the Comet Dynamical Environment [PDF]
Journal of Guidance, Control, and Dynamics, 2007 An outgassing jet model is presented in support of spacecraft navigation for future missions to comets. The outgassing jet is modeled as an emission cone while the comet is modeled as a uniform density triaxial ellipsoid. The comet's motion about the sun is included in the model.
Byram, Sharyl Marie +2 more
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Abstracts of the 12th International Comet Assay Workshop held at the University of Navarra, Pamplona, Spain, 29–31 August 2017 (https://icaw.vito.be/) [PDF]
, 2017 Genotoxicity evaluation is a valuable tool for studying the most important occupational hazards allowing a reasonable epidemiological evaluation of potential health effects.
Morais, Simone +22 more
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Biomonitoring of the genotoxic potential of aqueous extracts of soils and bottom ash resulting from municipal solid waste incineration, using the comet and micronucleus tests on amphibian (Xenopus laevis) larvae and bacterial assays (MutatoxR and Ames tests) [PDF]
, 2006 The management of contaminated soils and wastes is a matter of considerable human concern. The present study evaluates the genotoxic potential of aqueous extracts of two soils (leachates) and of bottom ash resulting from municipal solid waste ...
Gauthier, Laury +11 more
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Dust Outburst Dynamics and Hazard Assessment for Close Spacecraft–Comet Encounters
The Planetary Science Journal, 2021 Using the gas drag by sublimating cometary surface ices for the acceleration of dust particles and deceleration by the gravity field of the nucleus combined with basic laws of mechanics, the sizes, velocities, and number densities of escaping particles ...
Uwe Fink +6 more
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Singularities in mass-loaded MHD flow: The cometary bow shock [PDF]
, 1991 We present a one-dimensional model of the mass-loading of the solar wind by cometary ions which predicts a singularity in the mass-loaded flow at M = 2. Further, a subshock occurs when the flow speed reaches M almost-equal-to 1.15.
A. J. Coates +5 more
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The Formation and Dynamical Survival of the Comet Cloud [PDF]
International Astronomical Union Colloquium, 1985 AbstractThe theory of a huge reservoir of comets (the “comet cloud”) extending to almost interstellar distances is analyzed, paying special attention to its dynamical stability, formation process and orbital properties of the incoming cloud comets. The perturbing influence of passing stars and giant molecular clouds is considered.
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Dynamics of the charged particles released from a Sun-grazing comet in the solar corona
Earth and Planetary Physics, 2021 The sun-grazing comet C/2011 W3 (Lovejoy) showed a distorted, unconventional tail morphology near its perihelion (1.2Rs). Based on the “Solar Corona and Inner Heliosphere” modeling result of the magnetic field and plasma dynamics in the solar corona, we ...
ChuanPeng Hou +4 more
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Impact Rates in the Outer Solar System
The Planetary Science Journal, 2023 Previous studies of cometary impacts in the outer solar system used the spatial distribution of ecliptic comets (ECs) from dynamical models that assumed ECs began on low-inclination orbits (≲5°) in the Kuiper Belt.
David Nesvorný +4 more
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