The nonmagnetic nucleus of comet 67P/Churyumov-Gerasimenko

The nonmagnetic nucleus of comet 67P/Churyumov-Gerasimenko

Knowledge of the magnetization of planetary bodies constrains their origin and evolution, as well as the conditions in the solar nebular at that time. On the basis of magnetic field measurements during the descent and subsequent multiple touchdown of the Rosetta lander Philae on the comet 67P/Churyu...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2015-07, Vol.349 (6247), p.494-494
Hauptverfasser: Auster, H.-U., Apathy, I., Berghofer, G., Fornacon, K.-H., Remizov, A., Carr, C., Güttler, C., Haerendel, G., Heinisch, P., Hercik, D., Hilchenbach, M., Kührt, E., Magnes, W., Motschmann, U., Richter, I., Russell, C. T., Przyklenk, A., Schwingenschuh, K., Sierks, H., Glassmeier, K.-H.
Format: Artikel
Sprache:eng
Schlagworte:
Comet nuclei
Comets
Magnetic fields
Magnetization
Measuring instruments
Meters
Nanostructure
Planetary evolution
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Zusammenfassung:Knowledge of the magnetization of planetary bodies constrains their origin and evolution, as well as the conditions in the solar nebular at that time. On the basis of magnetic field measurements during the descent and subsequent multiple touchdown of the Rosetta lander Philae on the comet 67P/Churyumov-Gerasimenko (67P), we show that no global magnetic field was detected within the limitations of analysis. The Rosetta Magnetometer and Plasma Monitor (ROMAP) suite of sensors measured an upper magnetic field magnitude of less than 2 nanotesla at the cometary surface at multiple locations, with the upper specific magnetic moment being
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaa5102