NSSDCA ID: 2007-004E-01
Mission Name: THEMIS-EThe FGM is a triaxial fluxgate magnetometer similar to the ones flown on Equator-S and MIR and has its heritage in units flown on AMPTE/IRM (1985), Phobos (1988), and Interball (1992). It measures the 3D ambient magnetic field, including DC and low frequency perturbations of the magnetic field, time wave and structure propagation between probes. It also provides information on plasma currents based on instantaneous magnetic field differences on two or more probes, separated by >0.2 RE. The sensors is being built by the Technical University Braunschweig (Germany) with support from the Institute for Space Research (Graz, Austria). The sensor and electronics are identical to the ones of the ROMAP instrument package delivered for the Rosetta mission (launch 2003). The instrument consists of two orthogonal ring-core elements of different diameter and is mounted on a 2 m double-hinge carbon epoxy boom identical to the boom used on FAST. Once per orbit calibration data are acquired at 32Hz to determine zero levels, gains, and sensor orientation for the individual probes. Intercalibration between the different probes and between the FGM and the Search Coil Magnetometer (SCM) are also performed.
Questions and comments about this experiment can be directed to: Dr. Dieter K. Bilitza
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Rumi Nakamura | Co-Investigator | Austrian Academy of Sciences | runi.nakamura@oeaw.ac.at |
Dr. Wolfgang Baumjohann | Co-Investigator | Max-Planck-Institut fur Extraterrestrische Physik | baumjohann@oeaw.ac.at |
Prof. Karl-Heinz Glassmeier | Co-Investigator | Technische Universitat Braunschweig | kh.glassmeier@tu-braunschweig.de |