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Horbury, T. S. 
ORCID: 0000-0002-7572-4690, O’Brien, H. L., Greenaway, C., Roberts, A., Crabtree, A., Tomes, M., Facchinelli, M., Finlayson, M., Bharatia, M. et al
(2026)
The IMAP Magnetometer.
Space Science Reviews, 222
.
ISSN 0038-6308
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Official URL: https://doi.org/10.1007/s11214-026-01277-8
Abstract
The magnetometer (MAG) is one of the ten scientific instruments on the Interstellar Mapping and Acceleration Probe (IMAP), which will take in situ and remote measurements from a Sun-Earth L1 halo orbit. MAG contributes to IMAP science goals of investigating the acceleration and propagation of energetic particles, as well as providing real-time space weather monitoring data. The magnetometer is a conventional dual sensor fluxgate instrument with a noise floor under 10 pT at 1 Hz, taking science measurements continuously at 2 vectors/s as well as a burst mode of 64 vectors/s for at least 8 hours per day. It also provides a real-time space weather monitoring product at 4 second cadence. We describe the requirements, design and performance of the instrument, including a novel lossless compression algorithm. Data products, processing and calibration plans are presented.
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