HR: 12:05h
AN: P32A-08    [Abstracts]
TI: Overview of the magnetic properties experiments onboard the two Mars Exploration Rovers, Spirit and Opportunity
AU: * Leer, K
EM: kleer@fys.ku.dk
AF: University of Copenhagen, NBI, Juliane Mariesvej 30, Copenhagen, 01 2100, Denmark
AU: Bertelsen, P
EM: preben@fys.ku.dk
AF: University of Copenhagen, NBI, Juliane Mariesvej 30, Copenhagen, 01 2100, Denmark
AU: Goetz, W
EM: Goetz@mps.mpg.de
AF: Max Planck Institute for Solar system research, Max-Planck-Str. 2, Lindau, 01 2100, Germany
AU: Hviid, S F
EM: krileer@mac.com
AF: Max Planck Institute for Solar system research, Max-Planck-Str. 2, Lindau, 01 2100, Germany
AU: Madsen, D E
EM: Daniel.Madsen@fysik.dtu.dk
AF: Technical University of Denmark, Anker Engelundsvej 1, Lyngby, 01 2800, Denmark
AU: Madsen, M B
EM: mbmadsen@fys.ku.dk
AF: University of Copenhagen, NBI, Juliane Mariesvej 30, Copenhagen, 01 2100, Denmark
AU: Olsen, M
EM: malte@fys.ku.dk
AF: University of Copenhagen, NBI, Juliane Mariesvej 30, Copenhagen, 01 2100, Denmark
AU: The, A
AB: The two Mars Exploration Rovers, Spirit and Opportunity, are each equipped with seven magnets designed for three different purposes: 1. The Filter and Capture magnets collect dust from the atmosphere. The dust can be investigated by the science instruments on the robotic arm and imaged by the Panoramic Camera. Analyzes of the dust shows that the magnetic component in the martian dust is magnetite, hematite together with paramagnetic and possibly superparamagnetic compounds is responsible for the yellowish color of the dust and the presence of olivine shows that the dust is formed without any appreciable presence of water. 2. The ring shaped Sweep magnet is design to detect non-magnetic particles. The experiment has been negative so far, showing that all particles must be composite and magnetic. This experience has been used to design a new camera calibration target for the Phoenix 2007, the sweep effect significantly preventing the calibration target to get dusty during the mission. 3. The Rock Abrasion Tool magnets are design to support the Mössbauer measurements on rocks giving additional information about the magnetic minerals contained in rocks. We here report on the results from the rovers and the neer future prospective for magnetic properties experiments on Mars.
DE: 3929 NMR, Mossbauer spectroscopy, and other magnetic techniques
DE: 5440 Magnetic fields and magnetism
DE: 5460 Physical properties of materials
DE: 5494 Instruments and techniques
DE: 6225 Mars
SC: Planetary Sciences [P]
MN: 2007 Joint Assembly