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Weiss BP, Merayo JMG, Ream JB, Oran R, Brauer P, Cochrane CJ, Cloutier K, Elkins-Tanton LT, Jørgensen JL, Maurel C, Park RS, Polanskey CA, de Soria Santacruz-Pich M, Raymond CA, Russell CT, Wenkert D, Wieczorek MA, Zuber MT. The Psyche Magnetometry Investigation. SPACE SCIENCE REVIEWS 2023; 219:22. [PMID: 37007705 PMCID: PMC10049963 DOI: 10.1007/s11214-023-00965-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/01/2023] [Indexed: 06/01/2023]
Abstract
The objective of the Psyche Magnetometry Investigation is to test the hypothesis that asteroid (16) Psyche formed from the core of a differentiated planetesimal. To address this, the Psyche Magnetometer will measure the magnetic field around the asteroid to search for evidence of remanent magnetization. Paleomagnetic measurements of meteorites and dynamo theory indicate that a diversity of planetesimals once generated dynamo magnetic fields in their metallic cores. Likewise, the detection of a strong magnetic moment ( > 2 × 10 14 Am 2 ) at Psyche would likely indicate that the body once generated a core dynamo, implying that it formed by igneous differentiation. The Psyche Magnetometer consists of two three-axis fluxgate Sensor Units (SUs) mounted 0.7 m apart along a 2.15-m long boom and connected to two Electronics Units (EUs) located within the spacecraft bus. The Magnetometer samples at up to 50 Hz, has a range of ± 80 , 000 nT , and an instrument noise of 39 pT axis - 1 3 σ integrated over 0.1 to 1 Hz. The two pairs of SUs and EUs provide redundancy and enable gradiometry measurements to suppress noise from flight system magnetic fields. The Magnetometer will be powered on soon after launch and acquire data for the full duration of the mission. The ground data system processes the Magnetometer measurements to obtain an estimate of Psyche's dipole moment.
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Affiliation(s)
- Benjamin P Weiss
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA
| | - José M G Merayo
- DTU Space, Technical University of Denmark (DTU), Copenhagen, Denmark
| | - Jodie B Ream
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA
| | - Rona Oran
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA
| | - Peter Brauer
- DTU Space, Technical University of Denmark (DTU), Copenhagen, Denmark
| | - Corey J Cochrane
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | - Kyle Cloutier
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | | | - John L Jørgensen
- DTU Space, Technical University of Denmark (DTU), Copenhagen, Denmark
| | - Clara Maurel
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA
| | - Ryan S Park
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | - Carol A Polanskey
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | | | - Carol A Raymond
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | - Christopher T Russell
- Department of Earth and Space Sciences, University of California, Los Angeles, Los Angeles, CA USA
| | - Daniel Wenkert
- Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA USA
| | - Mark A Wieczorek
- Observatoire de la Côte d'Azur, Centre National de la Recherche Scientifique (CNRS), Laboratoire Lagrange, Université Côte d'Azur, Nice, France
| | - Maria T Zuber
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA
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Lillis RJ, Purucker ME, Halekas JS, Louzada KL, Stewart-Mukhopadhyay ST, Manga M, Frey HV. Study of impact demagnetization at Mars using Monte Carlo modeling and multiple altitude data. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009je003556] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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