Giacobini-Zinner magnetotail - Ice magnetic field observations

Details Giacobini-Zinner magnetotail - Ice magnetic field observations Giacobini-Zinner magnetotail - Ice magnetic field observations

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13..283s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 13, March 1986, p. 283-286. NASA-supported research.

Physics

49

Comet Tails, Cometary Magnetospheres, Giacobini-Zinner Comet, International Sun Earth Explorer 3, Interplanetary Magnetic Fields, Magnetic Field Configurations, Analysis Of Variance, Current Sheets, Field Strength, Magnetic Flux, Space Plasmas, Comets, Giacobini-Zinner, Ice Mission, Spacecraft Observations, Polarity, Magnetotail, Magnetic Fields, Plasma Sheet, Description, Magnitude, Magnetopause, Analysis, Downstream, Models, Hypotheses

Scientific paper

A well developed magnetotail with a diameter of about 10,000 km has been revealed 7800 km downstream of the nucleus of Comet Giacobini-Zinner by International Cometary Explorer magnetic field observations. The tail is composed of two lobes of opposite magnetic polarity that are separated by an approximately 1500 km-thick plasma sheets. The field magnitude increases by a factor of 2 between the outer portions of the lobe and the central regions, where peak fields of about 60 nT were measured. Flaring is lowest in the high field regions of the central tail and greatest in the outer portions of the lobes, where minimum variance analyses on the magnetopause crossings furnishes flare angles of 20-40 deg. The Alfven field line draping model of type I cometary tails is confirmed by these observations.

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