Results 101 to 110 of about 243 (142)
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The structure of dust tails of comets II. The tail and dust content of comet Arend-Roland
Chinese Astronomy and Astrophysics, 1983Abstract The modified distribution function of dust particles, f(γ), which can be determined from tail brightness profiles on the basis of mechanical theory, is discussed with special regard to its reliability and accuracy. Physical significance of f(γ) is also discussed in terms of dust model parameters, and it is shown that f(γ), if treated ...
null Liu Cai-pin, null Kimura Hiroshi
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The striae in the dust tails of great comets — a comparison to various theories
Astronomische Nachrichten, 1988AbstractWe reanalyse positions and motion of the striae in the dust tails of the bright comets Mrkos 1957 V and West 1976 VI. Two theories are compared to the data: the high speed particle ejection theory of NOTNI (1964) and the two‐step kinematical sequence proposed by SEKANINA and FARRELL (1980) in their particle fragmentation theory.
P. Notni, W. ThÄnert
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The fluid dynamics of comet dust tails
3rd and 4th Aerospace Sciences Meeting, 1966M. FINSON, R. PROBSTEIN
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Comet Dust Tail Analysis using the Finson-Probstein Model
2022The fine-structure detail of several comet dust tails is analysed from amateur and professional comet images using the Finson-Probstein mdoel. Given the date and time of the image taken, the comet’s position in the sky is calculated using an open source algorithm [1] and the comet’s dust tail is simulated for that position and time.
Qasim Afghan +2 more
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On the Dust Tail of Comet Austin 1989c1
Publications of the Astronomical Society of Japan, 1990Abstract A peculiar dust tail of Comet Austin 1989c1 was observed before its perihelion passage. A theoretical calculation indicates that the tail comprises large particles of millimeter-submillimeter size. The calculation also shows that these particles were ejected from ~ 1000 d before its perihelion passage.
Jun-ichi Watanabe +2 more
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The Dynamics of Charged Dust in the Tail of Comet Giacobini-Zinner
Journal of Geophysical Research: Space Physics, 1986A numerical simulation has been performed to calculate the distributions of dust particles of various sizes down the tail of comet P/Giacobini‐Zinner. When the electrostatic charging of the grains in the plasma and radiative environment of the comet is taken into account, it is found that the distribution of the grains (particularly at the lowest end ...
M. Horanyi, D. A. Mendis
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Dust tail streamers of a comet with rotating nucleus
Astrophysics and Space Science, 1992Synthetic images of the dust tail are presented for a comet which has a rotating nucleus with one predominant dust source fixed to it. The images have been generated using a new computer model which, unlike similar models, allows for the study of dust tails caused by a rotating nucleus with an anisotropic distribution of sources.
Klaus Beisser, Horst Drechsel
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Plasma Tail and Dust Tail of Comets
1994Generally, a comet has two tails; the blue plasma tail and the red dust tail (or Type 1 (ion) tail and Type 2 (dust) tail). The plasma tail is caused by an interaction between the solar wind and the cometary plasma, while the dust tail is by the solar radiation pressure to the cometary dust. The first purpose of the present paper is to review our works
Takao Saito +3 more
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Propagating inhomogeneities in the dust tail of comet West 1975
Nature, 1978COMET West has displayed some remarkable properties. Sekanina1 has studied the multiple splitting of its nucleus and also discussed the strange structure of its dust tail. This tail is characterised by a system of bright bands which do not correspond to the true synchronous band2 and which are shown by very few comets.
SERGE KOUTCHMY, PHILIPPE LAMY
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Comet dust tail detection by the Juno spacecraft’s magnetometer investigation
2023During transit from Earth to Jupiter, NASAs Juno spacecraft carried out scientific measurements along its trajectory, using a subset of its instrument suite. One of the instruments turned on during the journey was the micro Advanced Stellar Compass, part of the MAG investigation. The fully autonomous microASC uses a camera to image the sky for attitude
Peter S. Jørgensen +7 more
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