Bulk parameters of water group ions at comet Giacobini-Zinner

K. Staines; A. Balogh; S. W.H. Cowley; R. J. Hynds; T. S. Yates; I. G. Richardson; T. R. Sanderson; K. P. Wenzel; D. J. McComas; B. T. Tsurutani

doi:10.1016/0273-1177(92)90406-N

Bulk parameters of water group ions at comet Giacobini-Zinner

K. Staines, A. Balogh, S. W.H. Cowley, R. J. Hynds, T. S. Yates, I. G. Richardson, T. R. Sanderson, K. P. Wenzel, D. J. McComas, B. T. Tsurutani

Research output: Contribution to journal › Article › peer-review

Abstract

We have analysed measurements of water group ions at comet Giacobini-Zinner, obtained with the EPAS instrument on the ICE spacecraft, in order to determine the bulk parameters of these ions. The measured ion velocity distributions are extrapolated to zero energy and integrated to obtain estimates of both number and thermal energy density. The number density is compared to independent observational and theoretical estimates. Combining the EPAS results with magnetic field and plasma data, we have obtained the β and Mach numbers of the flow in the region surrounding the comet.

Original language	American English
Pages (from-to)	327-330
Number of pages	4
Journal	Advances in Space Research
Volume	12
Issue number	8
DOIs	https://doi.org/10.1016/0273-1177(92)90406-N
State	Published - Aug 1992
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/0273-1177(92)90406-N

Cite this

@article{4a19c22d443f4a7daaf33df0ccb7b5b3,

title = "Bulk parameters of water group ions at comet Giacobini-Zinner",

abstract = "We have analysed measurements of water group ions at comet Giacobini-Zinner, obtained with the EPAS instrument on the ICE spacecraft, in order to determine the bulk parameters of these ions. The measured ion velocity distributions are extrapolated to zero energy and integrated to obtain estimates of both number and thermal energy density. The number density is compared to independent observational and theoretical estimates. Combining the EPAS results with magnetic field and plasma data, we have obtained the β and Mach numbers of the flow in the region surrounding the comet.",

author = "K. Staines and A. Balogh and Cowley, {S. W.H.} and Hynds, {R. J.} and Yates, {T. S.} and Richardson, {I. G.} and Sanderson, {T. R.} and Wenzel, {K. P.} and McComas, {D. J.} and Tsurutani, {B. T.}",

note = "Funding Information: The UK SERC is acknowledged for Research Student (KS and TSY) and Research Assistant (IGR and KS) support. The work done at Los AlamosNational Laboratory was carried Out under theauspices of theUnited States Department ofEnergywith partial support from NASA under S-04039-D. Portions ofthis work were done at the Jet Propulsion Laboratory,California Institute ofTechnology, under contract with NASA.",

year = "1992",

month = aug,

doi = "10.1016/0273-1177(92)90406-N",

language = "American English",

volume = "12",

pages = "327--330",

journal = "Advances in Space Research",

issn = "0273-1177",

publisher = "Elsevier Limited",

number = "8",

}

TY - JOUR

T1 - Bulk parameters of water group ions at comet Giacobini-Zinner

AU - Staines, K.

AU - Balogh, A.

AU - Cowley, S. W.H.

AU - Hynds, R. J.

AU - Yates, T. S.

AU - Richardson, I. G.

AU - Sanderson, T. R.

AU - Wenzel, K. P.

AU - McComas, D. J.

AU - Tsurutani, B. T.

N1 - Funding Information: The UK SERC is acknowledged for Research Student (KS and TSY) and Research Assistant (IGR and KS) support. The work done at Los AlamosNational Laboratory was carried Out under theauspices of theUnited States Department ofEnergywith partial support from NASA under S-04039-D. Portions ofthis work were done at the Jet Propulsion Laboratory,California Institute ofTechnology, under contract with NASA.

PY - 1992/8

Y1 - 1992/8

N2 - We have analysed measurements of water group ions at comet Giacobini-Zinner, obtained with the EPAS instrument on the ICE spacecraft, in order to determine the bulk parameters of these ions. The measured ion velocity distributions are extrapolated to zero energy and integrated to obtain estimates of both number and thermal energy density. The number density is compared to independent observational and theoretical estimates. Combining the EPAS results with magnetic field and plasma data, we have obtained the β and Mach numbers of the flow in the region surrounding the comet.

AB - We have analysed measurements of water group ions at comet Giacobini-Zinner, obtained with the EPAS instrument on the ICE spacecraft, in order to determine the bulk parameters of these ions. The measured ion velocity distributions are extrapolated to zero energy and integrated to obtain estimates of both number and thermal energy density. The number density is compared to independent observational and theoretical estimates. Combining the EPAS results with magnetic field and plasma data, we have obtained the β and Mach numbers of the flow in the region surrounding the comet.

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U2 - 10.1016/0273-1177(92)90406-N

DO - 10.1016/0273-1177(92)90406-N

M3 - Article

SN - 0273-1177

VL - 12

SP - 327

EP - 330

JO - Advances in Space Research

JF - Advances in Space Research

IS - 8

ER -

Bulk parameters of water group ions at comet Giacobini-Zinner

Abstract

ASJC Scopus subject areas

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