The MAVEN Magnetic Field Investigation
By J. Connerney, J. Espley, P. Lawton, S. Murphy, J. Odom, Ronald J. Oliversen, D. Sheppard. 2015
536 citations recorded by the source corpus.
The MAVEN magnetic field investigation is part of a comprehensive particles and fields subsystem that will measure the magnetic and electric fields and plasma environment of Mars and its interaction with the solar wind. The magnetic field instrumentation consists of two independent tri-axial fluxgate magnetometer sensors, remotely mounted at the outer extremity of the two solar arrays on small extensions (“boomlets”). The sensors are controlled by independent and functionally identical electronics assemblies that are integrated within the particles and fields subsystem and draw their power from redundant power supplies within that system. Each magnetometer measures the ambient vector magnetic field over a wide dynamic range (to 65,536 nT per axis) with a resolution of 0.008 nT in the most sensitive dynamic range and an accuracy of better than 0.05 %. Both magnetometers sample the ambient magnetic field at an intrinsic sample rate of 32 vector samples per second. Telemetry is transferred from each magnetometer to the particles and fields package once per second and subsequently passed to the spacecraft after some reformatting. The magnetic field data volume may be reduced by averaging and decimation, when necessary to meet telemetry allocations, and application of data compression, utilizing a lossless 8-bit differencing scheme. The MAVEN magnetic field experiment may be reconfigured in flight to meet unanticipated needs and is fully hardware redundant. A spacecraft magnetic control program was implemented to provide a magnetically clean environment for the magnetic sensors and the MAVEN mission plan provides for occasional spacecraft maneuvers—multiple rotations about the spacecraft x$x$ and z$z$ axes—to characterize spacecraft fields and/or instrument offsets in flight.
Subfields: Astronomy and Astrophysics, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/b35f39fab9d53d2f7645433b03b7b0755190aec1
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Citations in the corpus
- MAVEN SupraThermal and Thermal Ion Compostion (STATIC) Instrument (2015, methodology): “STATIC’s inflight calibration data analysis will also utilize observations from the other MAVEN sensors including the Magnetometer (Connerney et al. 2015) for pickup ion analysis, and LPW for analyzing ion heating and spacecraft potential.”
- The spatial distribution of planetary ion fluxes near Mars observed by MAVEN (2015, methodology): “Of necessity, we exclude time periods for which SWIA andMAG estimates of the solar wind and IMF are unavailable.”
- The MAVEN Solar Wind Electron Analyzer (2016, methodology): “The PFP suite includes two identical magnetometers (MAG, Connerney et al. 2015), a suprathermal and thermal ion composition experiment (STATIC, McFadden et al. 2015), a solar wind ion analyzer (SWIA, Halekas et al. 2015), and an extreme ultraviolet monitor (EUV, Eparvier et al. 2015).”
- Structure, dynamics, and seasonal variability of the Mars‐solar wind interaction: MAVEN Solar Wind Ion Analyzer in‐flight performance and science results (2017, background): “…Wind Electron Analyzer (SWEA) [Mitchell et al., 2016], the solar energetic particle (SEP) investigation [Larson et al., 2015], and theMagnetometer (MAG) [Connerney et al., 2015a, 2015b] provide EUV photon fluxes, solar wind electron fluxes, energetic particle fluxes, and magnetic field values.”
- Strong plume fluxes at Mars observed by MAVEN: An important planetary ion escape channel (2015, background): “MAVEN also carries the Solar Wind Ion Analyzer (SWIA) [Halekas et al., 2013] to measure solar wind ions and the Magnetometer (MAG) [Connerney et al., 2015] that can directly measure the IMF when the spacecraft is beyond the bow shock.”