Physics
Scientific paper
May 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012p%26ss...65....1c&link_type=abstract
Planetary and Space Science, Volume 65, Issue 1, p. 1-9.
Physics
Scientific paper
The ROSETTA mission to comet 67P/Churyumov-Gerasimenko presents us for the first time the opportunity to study the interior of a cometary nucleus. Information about the electrical conductivity and its distribution inside the nucleus can be derived by measuring the magnetic fields induced in the nucleus by variations of the interplanetary magnetic field. Due to the relatively small size of the nucleus, this task is not trivial and requires very precise magnetic field measurements.Here we analyze the response of a conductive nucleus to transient step-like magnetic field changes as well as the response in frequency domain to electromagnetic waves. For the nucleus we use a spherical model with either uniform conductivity or consisting of a core and an outer layer with different conductivities. The space outside of the nucleus is modeled either by highly conductive solar wind plasma or by zero conductivity void.Various combinations of conductivities, radii of the nucleus and of the core, and properties of the space outside the nucleus result in different inductive responses. Several such combinations which could be encountered by ROSETTA are studied in detail in order to estimate which conductivity ranges and core radii can be determined using the ROSETTA instruments and which mission operations would facilitate such measurements.
Auster Uli
Carr Chris
Constantinescu Dragos O.
Fornacon Karl-Heinz
Glassmeier Karl-Heintz
No associations
LandOfFree
On the possibility to determine the electrical conductivity of 67P/CG from ROSETTA magnetic field observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the possibility to determine the electrical conductivity of 67P/CG from ROSETTA magnetic field observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the possibility to determine the electrical conductivity of 67P/CG from ROSETTA magnetic field observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1552302