Results 151 to 160 of about 337,815 (176)

Modeling of the Dust Tail of Comet C/2012 S1 (ISON) From the Results of Observations

Solar System Research, 2015
The results of the dynamic modeling of the process, that formed the dust tail of comet C/2012 S1 (ISON), are presented. The images of the comet were acquired with the 1-meter Zeiss-1000 telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS). To construct the model of the dust tail, the trajectories of 50 million
Oleksandra Ivanova, A S Moskvitin, N N Kiselev   +2 more
exaly   +2 more sources

The motion of dust and gas in the heads of comets with type II tails

Astrophysics and Space Science, 1972
Photographs of Comet Bennett 1969i taken in the dust-scattered continuum reveal that the dust particles, leading to the formation of the type II tail, leave the vicinity of the nucleus only within a certain cone with the aperture in the direction to the Sun.
Karl Wurm, Augusto Mammano
openaire   +1 more source

Dust emission structure in comets with type II tails

Astrophysics and Space Science, 1974
Short exposure plates of Comet Arend-Roland (1956h) are examined and compared with similar photographs of Comet Bennett (1969i), Comet Halley (1910 II) and Comet Mrkos (1957d). It is found that the emission structure of the dust near the nucleus in the first comet is different from that in the others, although in all cases we have the formation of ...
openaire   +1 more source

Model of the dust tail of comet C/2011 L4 (PANSTARRS)

Kinematics and Physics of Celestial Bodies, 2015
Results of dynamic modeling of the dust tail formation for the comet C/2011 L4 (PANSTARRS) are presented. To simulate the dust tail, the trajectories of 100 million dust particles were traced. Their sizes, ejection moments, outflow directions, and initial velocities were defined by the Monte Carlo algorithm.
S. V. Kharchuk, P. P. Korsun
openaire   +1 more source

The dust tail of comet P/Halley in April 1986

1988
Images of the dust tail of comet Halley were obtained with the ESO wide-field CCD camera during April 1986 with the Johnson B, V and R filters in polarized light. An analysis of selected images taken on April 6 and 11, processed for photometric analysis, is presented.
P. L. Lamy, H. Pedersen, R. Vio
openaire   +1 more source

Can the Sodium Tail of Comet Hale-Bopp Have a Dust-Impact Origin?

The Astrophysical Journal, 1998
Consideration is given to the possible mechanisms responsible for the production of the atomic sodium tail of comet Hale-Bopp. It is shown that both photosputtering and ion sputtering of nonvolatile dust grains might not be the main driving force. Instead, the generation of impact vapor by collisional interaction between the cometary dust coma of ...
Ip, W., Jorda, L.
openaire   +2 more sources

Striated Features in the Dust Tail of Comet C/2006 P1 (McNaught)

Kinematics and Physics of Celestial Bodies, 2010
To explain the distinct transversal striae observed in the tail of comet C/2006 P1 (McNaught) near the perihelion, a dynamic model for the formation of the dust tail of the comet has been developed. It is supposed that, on the surface of the nucleus, there are three local active domains of the increased outflow of the material.
S. V. Kharchuk, P. P. Korsun
exaly   +2 more sources

The Dust Tail of Comet 1P/Halley After Its Perihelion in 1986 and the Rotation of the Nucleus [PDF]

Monthly Notices of the Royal Astronomical Society, 1996
H.-G. Grothues, T. Schmidt-Kaler
exaly   +2 more sources

Model analysis of the dust tail of comet C/2012 K5 (LINEAR)

Kinematics and Physics of Celestial Bodies, 2015
From the dynamic modeling of the process forming the dust tail of comet C/2012 K5 (LINEAR), the brightness distribution in this dust tail has been retrieved. The model developed by Korsun on the basis of the statistical Monte-Carlo approach was used. The adequacy of the model was determined by fitting the observed and modeled isophots.
S. V. Kharchuk, O. V. Ivanova, P. P. Korsun, O. R. Baransky   +3 more
openaire   +1 more source

Comet dust tails as a tracer for the solar wind.

The sublimation of volatiles from comets near the Sun such as water ice results in the ejection of vast quantities of dust grains from the nucleus. These ejected grains are then sorted by radiation pressure forces to form a dust tail. Visually spectacular dust tails, such as that of C/2006 P1 (McNaught), often display linear striations across the tail,
Jake Hanlon, Geraint Jones
openaire   +1 more source