Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite

Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite

The presence of a satellite disturbs the ambient plasma. The charging of the spacecraft creates a sheath around it, and the motion of the satellite creates a wake disturbance. This modification of the plasma environment introduces difficulties in measuring electric fields and plasma densitie...

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Main Authors: N. Ivchenko, L. Facciolo, P. A. Lindqvist, P. Kekkonen, B. Holback
Format: Article
Language:English
Published: Copernicus Publications 2001-06-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/19/655/2001/angeo-19-655-2001.pdf
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spelling doaj-cd098a2f521e41458eb92bff1071ae192020-11-24T21:51:55ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762001-06-011965566610.5194/angeo-19-655-2001Disturbance of plasma environment in the vicinity of the Astrid-2 microsatelliteN. Ivchenko0L. Facciolo1L. Facciolo2P. A. Lindqvist3P. Kekkonen4B. Holback5Alfv&#x00E9;n Laboratory, Royal Institute of Technology, Stockholm, SwedenPolitecnico di Torino, C. so Duca degli Abruzzi, Torino, ItalyAlfv&#x00E9;n Laboratory, Royal Institute of Technology, Stockholm, SwedenAlfv&#x00E9;n Laboratory, Royal Institute of Technology, Stockholm, SwedenOulu University, Oulu, FinlandSwedish Institute of Space Physics, Uppsala, SwedenThe presence of a satellite disturbs the ambient plasma. The charging of the spacecraft creates a sheath around it, and the motion of the satellite creates a wake disturbance. This modification of the plasma environment introduces difficulties in measuring electric fields and plasma densities using the probe technique. We present a study of the structure of the sheath and wake around the Astrid-2 microsatellite, as observed by the probes of the EMMA and LINDA instruments. Measurements with biased LINDA probes, as well as current sweeps on the EMMA probes, show a density enhancement upstream of the satellite and a plasma depletion behind the satellite. The electric field probes detect disturbances in the plasma potential on magnetic field lines connected to the satellite.<br><br><b>Key words. </b>Space plasma physics (spacecraft sheaths, wakes, charging; instruments and techniques)https://www.ann-geophys.net/19/655/2001/angeo-19-655-2001.pdf
collection DOAJ
language English
format Article
sources DOAJ
author N. Ivchenko
L. Facciolo
L. Facciolo
P. A. Lindqvist
P. Kekkonen
B. Holback
spellingShingle N. Ivchenko
L. Facciolo
L. Facciolo
P. A. Lindqvist
P. Kekkonen
B. Holback
Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
Annales Geophysicae
author_facet N. Ivchenko
L. Facciolo
L. Facciolo
P. A. Lindqvist
P. Kekkonen
B. Holback
author_sort N. Ivchenko
title Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
title_short Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
title_full Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
title_fullStr Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
title_full_unstemmed Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite
title_sort disturbance of plasma environment in the vicinity of the astrid-2 microsatellite
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 2001-06-01
description The presence of a satellite disturbs the ambient plasma. The charging of the spacecraft creates a sheath around it, and the motion of the satellite creates a wake disturbance. This modification of the plasma environment introduces difficulties in measuring electric fields and plasma densities using the probe technique. We present a study of the structure of the sheath and wake around the Astrid-2 microsatellite, as observed by the probes of the EMMA and LINDA instruments. Measurements with biased LINDA probes, as well as current sweeps on the EMMA probes, show a density enhancement upstream of the satellite and a plasma depletion behind the satellite. The electric field probes detect disturbances in the plasma potential on magnetic field lines connected to the satellite.<br><br><b>Key words. </b>Space plasma physics (spacecraft sheaths, wakes, charging; instruments and techniques)
url https://www.ann-geophys.net/19/655/2001/angeo-19-655-2001.pdf
work_keys_str_mv AT nivchenko disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
AT lfacciolo disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
AT lfacciolo disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
AT palindqvist disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
AT pkekkonen disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
AT bholback disturbanceofplasmaenvironmentinthevicinityoftheastrid2microsatellite
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