Universität zu Köln

Simon, Sven ORCID: 0000-0002-6204-5437, Neubauer, Fritz M., Wennmacher, Alexandre and Dougherty, Michele K. (2014). Variability of Titan's induced magnetotail: Cassini magnetometer observations. J. Geophys. Res-Space Phys., 119 (3). S. 2024 - 2038. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 2169-9402

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Abstract

We study the structure and variability of Titan's magnetotail by analyzing Cassini magnetic field observations from all tail crossings between 2005 and 2013. Titan's magnetotail is strongly affected by fluctuations in the ambient magnetospheric field conditions. Therefore, even Titan flybys with nearly identical trajectories may reveal a completely different location and strength of the perturbations in the moon's tail. Short-scale variations of the ambient magnetospheric field may cause a fragmentation of Titan's magnetic lobes, as also seen in Cassini Plasma Spectrometer ion data. By transforming the magnetic field perturbations detected during all available tail crossings to the Draping Coordinate System, we identified the following general characteristics of Titan's plasma interaction: (1) Perpendicular to the background magnetic field and the corotation direction, Titan's magnetotail is confined to a narrow region with a diameter of about 5 Titan radii. Thus, Titan's tail exhibits a rather flat structure reminiscent of a delta wing. (2) The plasma incident upon Titan does not possess a significant velocity component along the Saturn-Titan line. (3) The nonzero component of the background field along the corotation direction generates an asymmetry of Titan's magnetotail which clearly manifests in Cassini magnetometer data.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Simon, Sven UNSPECIFIED orcid.org/0000-0002-6204-5437 UNSPECIFIED Neubauer, Fritz M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wennmacher, Alexandre UNSPECIFIED UNSPECIFIED UNSPECIFIED Dougherty, Michele K. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-445387
DOI:	10.1002/2013JA019608
Journal or Publication Title:	J. Geophys. Res-Space Phys.
Volume:	119
Number:	3
Page Range:	S. 2024 - 2038
Date:	2014
Publisher:	AMER GEOPHYSICAL UNION
Place of Publication:	WASHINGTON
ISSN:	2169-9402
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PLASMA ENVIRONMENT; HYBRID SIMULATION; FIELD CONDITIONS; MAGNETOSPHERE Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/44538