Modeling of Dust Halo Formation Following Comet Outbursts: Preliminary Results

  1. Thomas J. Birmingham and
  2. Alexander J. Dessler
  1. T.I. Gombosi1 and
  2. M. Horányi2

Published Online: 19 MAR 2013

DOI: 10.1029/SP027p0343

Comet Encounters

Comet Encounters

How to Cite

Gombosi, T.I. and Horányi, M. (1988) Modeling of Dust Halo Formation Following Comet Outbursts: Preliminary Results, in Comet Encounters (eds T. J. Birmingham and A. J. Dessler), American Geophysical Union, Washington, D.C.. doi: 10.1029/SP027p0343

Author Information

  1. 1

    Space Physics Research Laboratory, the University of Michigan, Ann Arbor, MI 48109

  2. 2

    Supercomputer Computations Research Institute, Florida State University, Tallahassee, FL 32306

Publication History

  1. Published Online: 19 MAR 2013
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780875902395

Online ISBN: 9781118668757



  • Cometary dust production process;
  • Dust terminal velocities;
  • Dusty hydrodynamic and kinetic models;
  • Gas and dust distributions;
  • Kinetic dust model


Evolution of gas and dust distributions following a spatially and temporally localized comet outburst was calculated using a hybrid kinetic-hydrodynamic method. It was found that a comet outburst resulted in significantly increased dust terminal velocities. As these higher terminal velocity values result in larger apex distances, therefore, the outburst generates distinct dust envelopes in front of the regular dust coma. Such envelopes were observed at several comets (cf. comet Donati).