Two-point observations of low-frequency waves at 67P/Churyumov-Gerasimenko during descent of PHILAE: Comparison of RPCMAG and ROMAP

File Description SizeFormat 
RICHTER_two-point-observations_V63.pdfAccepted version1.25 MBAdobe PDFDownload
angeo-34-609-2016.pdfPublished version3.67 MBAdobe PDFDownload
Title: Two-point observations of low-frequency waves at 67P/Churyumov-Gerasimenko during descent of PHILAE: Comparison of RPCMAG and ROMAP
Author(s): Richter, I
Auster, H-U
Berghofer, G
Carr, CM
Cupido, E
Fornacon, K-H
Goetz, C
Heinisch, P
Koenders, C
Stoll, B
Tsurutani, BT
Vallat, C
Volwerk, M
Glassmeier, K-H
Item Type: Journal Article
Abstract: The European Space Agency’s spacecraft ROSETTA has reached its final destination, comet 67P/Churyumov-Gerasimenko. Whilst orbiting in the close vicinity of the nucleus the ROSETTA magnetometers detected a new type of low-frequency waves possibly generated by a cross-field current instability due to freshly ionized cometary water group particles. During separation, descent and landing of the lander PHILAE on comet 67P/Churyumov-Gerasimenko, we used the unique opportunity to perform combined measurements with the magnetometers onboard ROSETTA (RPCMAG) and its lander PHILAE (ROMAP). New details about the spatial distribution of wave properties along the connection line of the ROSETTA orbiter and the lander PHILAE are revealed. An estimation of the observed amplitude, phase and wavelength distribution will be presented as well as the measured dispersion relation, characterizing the new type of low-frequency waves. The propagation direction and polarization features will be discussed using the results of a minimum variance analysis. Thoughts about the size of the wave source will complete our study
Publication Date: 14-Jul-2016
Date of Acceptance: 28-Jun-2016
URI: http://hdl.handle.net/10044/1/37044
DOI: https://dx.doi.org/10.5194/angeo-34-609-2016
ISSN: 1432-0576
Publisher: European Geosciences Union (EGU)
Start Page: 609
End Page: 622
Journal / Book Title: Annales Geophysicae
Volume: 34
Copyright Statement: © Author(s) 2016. CC Attribution 3.0 License
Keywords: Meteorology & Atmospheric Sciences
0401 Atmospheric Sciences
0404 Geophysics
0201 Astronomical And Space Sciences
Publication Status: Published
Appears in Collections:Space and Atmospheric Physics
Physics
Faculty of Natural Sciences



Items in Spiral are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons