Time-dependent numerical modeling of dust halo formation at comets

Details Time-dependent numerical modeling of dust halo formation at comets Time-dependent numerical modeling of dust halo formation at comets

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...311..491g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 311, Dec. 1, 1986, p. 491-500.

Statistics

Computation

8

Comets, Computational Astrophysics, Cosmic Dust, Gas Flow, Hydrodynamic Equations, Particle Trajectories, Three Dimensional Models, Velocity Distribution

Scientific paper

The evolution of gas and dust distributions following a spatially and temporally localized comet outburst was calculated using a hybrid kinetic-hydrodynamic method. In the inner coma the time-dependent continuity, momentum, and energy equations of the dusty gas flow were solved simultaneously using 12 dust sizes. Beyond 300 km a three-dimensional kinetic model was used to calculate the trajectory of each individual dust grain. It was found that following the onset of the comet outburst a gas-dust blast wave propagates outward in the inner coma. About 15 minutes after the increased gas and dust production was initiated at the nucleus, a new equilibrium was reached in the inner coma. The most important feature of this new steady state was the significant increase of the dust terminal velocities. These higher terminal velocity values resulted in larger apex distances for dust particles emitted during the outburst. The dust particles spend a relatively long time near their apex points; therefore, the outburst generates long-lasting distinct dust envelopes in front of the regular dust coma.

Affiliated with

Also associated with

No associations

Rating

Time-dependent numerical modeling of dust halo formation at comets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time-dependent numerical modeling of dust halo formation at comets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-dependent numerical modeling of dust halo formation at comets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1121447