Abstract
The cameras carried onboard the flyby missions to comet P/Halleyin 1986 imaged the near nuclear jet activity fromseveral spatial directions. The observed, very structured near nucleardust jets were considered at that timeas the result of dust emission from well localized active surface regions(without supporting 3-D model computations, however).Based on the first, recently developed 3-D gas dynamical model ofP/Halley's activity,we have been shown that jet features can be reproduced assuming ahomogeneous dusty icenucleus surface. The dust in the collisional near nuclear comais concentrated along the gas flow discontinuities resulting from thecomplicated surface orography, creating the visual impression ofdust jets. We present here the results of these calculations forthe near nucleus dust distributions,and we compare them with the direct observations made during thethree Halley flybys (Vega 1, Vega 2, and Giotto).
Article PDF
Similar content being viewed by others
References
Crifo, J.-F. and Rodionov, A. V.: 1999, Planet. Space Sci. 47, 797–826.
Crifo, J.-F., Fulle, M., Rodionov, A. V., Szegö, K., and Fulle, F.: 2002, ‘Challenging a Paradigm: Do We Need Active and Inactive Areas to Account for Near-Nuclear Jet Activity?’, these proceedings.
Keller, H. U., Curdt, W., Kramm, J. R., and Thomas, N.: 1995, ESA SP-1127, Vol. 1.
Kitamura, Y.: 1990, Icarus 86, 455–475.
Merenyi, E., Foldy, L., Szegö, K., Toth, I., and Kondor, A.: 1990, Icarus 54, 388–405.
Rodionov, A. V., Crifo, J.-F., Szegö, K., Lagerros, J., and Fulle, M.: 2002, Planet. Space Sci., submitted.
Sagdeev R. Z., Smith, B., Szegö, K., Larson, S., Toth, I., Merenyi, E., Avanesov, G. A., Karasikov, V. A., Shamis, V. A., and Tarnapolski, V. I.: 1987, Astron. Astrophys. 187, 293–298.
Sagdeev, R. Z., Szegö, K., Smith, B. A., Larson, S., Merényi, E., Kondor, A., and Toth, I.: 1989, Astron. J. 97, 546–551.
Szegö, K., Sagdeev, R. Z., Whipple, F. L., Abergel, A., Bertaux, J. L., Merenyi, E., Szalai, S., and Varhalmi. L.: 1995, ESA SP-1127, Vol. 2.
Vaisberg, O. L., Smirnov, V. N., Gorn, L. S., Iovlev, M. V., Balichkin, M. A., Klimov, S. I., Savin, S. P., Shapiro, V. D., and Shevchenhko, V. I.: 1986, Nature 321, 274–276.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Szegö, K., Crifo, JF., Rodionov, A.V. et al. The Near-Nuclear Coma of Comet Halley in March 1986. Earth Moon Planet 90, 435–443 (2002). https://doi.org/10.1023/A:1021554921804
Issue Date:
DOI: https://doi.org/10.1023/A:1021554921804