Results 141 to 150 of about 337,815 (176)

The Dynamics of Charged Dust in the Tail of Comet Giacobini-Zinner

Journal of Geophysical Research: Space Physics, 1986
A 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
openaire   +1 more source

COMetary Dust TAIL Simulator (COMTAILS): A Computer Code to Generate Comet Dust Tail Brightness Images

Astronomy and Astrophysics
Context. We present the COMetary dust TAIL Simulator (COMTAILS), a numerical Monte Carlo code to generate images of dust tail brightness from comets and active asteroids in the Solar System. Aims. We describe a numerical code, available to interested users, capable of generating simulated images of dust tail brightness for comparison with observations,
Fernando Moreno
exaly   +4 more sources

Plasma Tail and Dust Tail of Comets

1994
Generally, 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, Yukio Kozuka, Keiji Saito, Shigeyuki Minami   +3 more
openaire   +1 more source

Dust tail streamers of a comet with rotating nucleus

Astrophysics and Space Science, 1992
Synthetic 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
openaire   +1 more source

The Dust Tail of Comet Bradfield 1987XXIX

1990
In this paper the reduction and the analysis of two images comcerning the dust tail of Comet Bradfield 1987XXIX are discussed. The plates (CRT7 + W16) were obtained by means of a 20/25/50 cm Schmidt camera. The adopted emulsion and filter combination (pass band 520–570 nm) approximates the standard V photometric system, thus dropping most of the plasma
M. Fulle, G. Cremonese, A. Cimatti
openaire   +1 more source

Comet dust tail detection by the Juno spacecraft’s magnetometer investigation

2023
During 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, John L. Jørgensen, John E. P. Connerney, Christina A. Toldbo, Mathias Benn, Anja C. Andersen, Troelz Denver, Scott J. Bolton   +7 more
openaire   +1 more source

Model analysis of the dust tail of comet Hale-Bopp

Kinematics and Physics of Celestial Bodies, 2009
The paper presents the results of dynamic simulation for the dust tail formation of comet C/1995 O1 (Hale-Bopp). To simulate the dust tail, the trajectories of 2 × 106 dust particles were traced. The sizes, ejection moments, outflow directions and velocities of the dust particles were defined by the Monte Carlo algorithm. The obtained three-dimensional
S. V. Kharchuk, P. P. Korsun, H. Mikuz
openaire   +1 more source

The anomalous dust tail of comet P/Tempel 2

Monthly Notices of the Royal Astronomical Society, 1984
La queue etroite de poussiere de la comete P/Tempel 2, observee par le satellite IRAS, est le resultat d'emissions a faible vitesse de particules larges. L'analyse dynamique des particules de poussiere sous l'influence de la pression de radiation solaire indique que certaines de ces emissions peuvent avoir eu lieu au moins 1500 jours avant les ...
N. Eaton, J. K. Davies, S. F. Green
openaire   +1 more source

Evidence for the Nucleus Rotation in Streamer Patterns of Comet Halley's Dust Tail

Astrophysics and Space Science, 1987
A generalized Finson-Probstein formalism was used to analyse the streamer patterns in the dust tail of Comet Halley as observed between 22 February and 11 March, 1986. A periodic appearance of a pattern of double streamers was found in the dust tail, indicating a time interval in the emission of this structures of about 6.5 days, if interpreted as ...
Hermann Boehnhardt
exaly   +2 more sources

Dust Grains in the Comae and Tails of Sungrazing Comets: Modeling of Their Mineralogical and Morphological Properties

Icarus, 2002
Abstract Observations of sungrazing comets, all of which belong to the Kreutz family, provide the opportunity of studying the properties of dust in the comae and tails of the comets. On the basis of available information on cometary and interplanetary dust as well as observations of dust in the tails of sungrazers, we model dust in sungrazing comets ...
Ingrid Mann, Elmar K Jessberger
exaly   +2 more sources