The outflow speed of the coma of Halley's comet

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Icarus; (USA)

DOI:https://doi.org/10.1016/0019-1035(89)90124-3· OSTI ID:5355203

Combi, M R ^[1]

---

1. Atmospheric and Environmental Research, Inc., Cambridge, MA (USA)

Data concerning the outflow speed of the coma of Comet Halley are studied in relation to a generalization of the coupled pure-gas-dynamic/Monte Carlo model of Combi and Smyth (1988) to include the dusty-gas dynamics of the inner coma. Measurements made by the Giotto neutral-gas spectrometer, IR water observations from the Kuiper Airborne Observatory, and Doppler radio line profiles of HCN and OH are used to examine the radial dependence of the outflow speed, the asymmetry in the outflow speed, and the overall heliocentric distance dependence of the Doppler profiles, respectively. The results suggest that the model makes it possible to understand the gross long-term behavior and radial structure of the dynamics of the cometary coma. 23 refs.

• OSTI ID: 5355203
• Journal Information: Icarus; (USA), Journal Name: Icarus; (USA) Vol. 81; ISSN ICRSA; ISSN 0019-1035
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMETS
COSMIC DUST
COSMIC GASES
DUSTS
FLUID FLOW
FLUID MECHANICS
FLUIDS
GAS FLOW
GASES
HALLEY COMET
HYDROGEN COMPOUNDS
HYDROXIDES
MEASURING INSTRUMENTS
MECHANICS
MONTE CARLO METHOD
MORPHOLOGY
OXYGEN COMPOUNDS
SPECTROMETERS
VELOCITY