| Name | FGM fluxgate magnetometer | ||||||||
| Mission | Cluster | ||||||||
| URL | https://csa.esac.esa.int/csa-web/#search | ||||||||
| DOI | https://doi.org/10.5270/esa-hxcrsz5 | ||||||||
| Abstract | Each Cluster spacecraft carries an identical FGM instrument (Fluxgate Magnetometer) to measure the DC magnetic field vector. Each instrument, in turn, consists of two triaxial fluxgate magnetometers and an onboard data processing unit. The instrument samples the magnetic field at a cadence of 22 Hz (67 Hz in Burst mode). In order to minimise the magnetic background of the spacecraft, one of the magnetometer sensors (the outboard, or OB sensor) is located at the end of one of the two 5 m radial booms of the spacecraft, the other (the inboard, or IB sensor) at 1.5 m inboard from the end of the boom. Since the start of the scientific operations on February 1, 2001, only the outboard sensor on each satellite has been used. | ||||||||
| Description | FGM key scientific datasets for Cluster-1 (similar for all other Cluster spacecraft)
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| Publication | Balogh, A., et al., The Cluster Magnetic Field Investigation: overview of in-flight performance and initial results, Ann. Geophys., 19, 1207, 2001; https://doi.org/10.5194/angeo-19-1207-2001 Balogh, A., et al., The Cluster Magnetic Field Investigation, Space Sci. Rev., 79, 65-92, 1997; https://doi.org/10.1023/A:1004970907748 |
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| Temporal Coverage | 2001-02-01 - current | ||||||||
| Mission Description | Cluster is the first constellation of four scientific spacecraft to study the Earth-Sun connection in three dimensions. Cluster offers unique opportunities to investigate physical processes in near-Earth space. Those processes are essential to study and understand the effects of the Sun on the vast Earth’s environment that is a highly varying system both in time and space. The four Cluster spacecraft in a polar orbit are unique in their ability to obtain a three-dimensional picture of medium and large-scale plasma structures. The varying Cluster spacecraft formation from 3 km to a few tens of thousands kilometres along the orbit enables multi-point local measurements of different regions at different scales that cannot be done with any other space mission. Escoubet, C.P., et al., The Cluster mission, Ann. Geophys., 19, 1197, 2001; https://doi.org/10.5194/angeo-19-1197-2001 Escoubet, C.P, et al., Cluster - Science and Mission Overview, Space Sci. Rev., 79, 11-32, 1997; https://doi.org/10.1023/A:1004923124586 |
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| Creator Contact | Chris Carr, Principal Investigator, Imperial College, United Kingdom, c.m.carr@imperial.ac.uk | ||||||||
| Publisher And Registrant | European Space Agency | ||||||||
| Credit Guidelines | When publishing any works related to this experiment, please cite the experiment DOI found herein and the Cluster mission DOI (where appropriate). |