Explosion of comet Shoemaker-Levy 9 on entry into the Jovian atmosphere

Details Explosion of comet Shoemaker-Levy 9 on entry into the Jovian atmosphere Explosion of comet Shoemaker-Levy 9 on entry into the Jovian atmosphere

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...434l..33m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 434, no. 1, p. L33-L36

Statistics

Computation

56

Computerized Simulation, Explosions, Gas Dynamics, Jupiter Atmosphere, Mathematical Models, Shoemaker-Levy 9 Comet, Atmospheric Pressure, Computational Grids, Energy Transfer, Kinetic Energy, Pressure Effects

Scientific paper

We use the astrophysical hydrocode ZEUS to compute high-resolution models of the disruption and deceleration of cometary fragments striking Jupiter. We find that simple analytic and semianalytic models work well for kilometer-size impactors. We show that previous numerical models that placed the explosion much deeper in the atmosphere failed to fully resolve important gasdynamical instabilities. These instabilities tear the comet apart, greatly increase its effective cross section, and bring it to an abrupt halt. A 1 km diameter fragment loses over 90% of its kinetic energy within a single scale height at an atmospheric pressure of order 10 bars. For all practical purposes, it explodes.

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