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The Psyche Magnetometry Investigation.

Benjamin P Weiss¹, José M G Merayo², Jodie B Ream¹

¹Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA USA.

Space Science Reviews

|April 3, 2023

Summary

This summary is machine-generated.

The Psyche Magnetometry Investigation seeks evidence of a magnetic field around asteroid (16) Psyche. Detecting this magnetic field would support the theory that Psyche originated from a differentiated planetary core.

Keywords:

Asteroids and planetesimals Dynamo Fluxgate magnetometer Gradiometry Magnetosphere Paleomagnetism Planetary differentiation Psyche

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Area of Science:

Planetary Science
Geophysics
Magnetometry

Background:

Asteroid (16) Psyche is a metallic body, hypothesized to be the core of a differentiated planetesimal.
Dynamo theory and meteorite paleomagnetism suggest that early planetesimals possessed metallic cores capable of generating magnetic fields.

Purpose of the Study:

To test the hypothesis that asteroid (16) Psyche originated from the core of a differentiated planetesimal.
To search for evidence of remanent magnetization around Psyche by measuring its magnetic field.

Main Methods:

Deployment of the Psyche Magnetometer, featuring two three-axis fluxgate Sensor Units (SUs) and two Electronics Units (EUs) for redundancy and gradiometry.
Measurement of Psyche's magnetic field with a sampling rate up to 50 Hz, a range of [specify range], and instrument noise of [specify noise].
Data processing by the ground system to estimate Psyche's dipole moment.

Main Results:

The Psyche Magnetometer is designed to detect a magnetic moment, which, if strong, would indicate a past core dynamo.
Successful detection of a magnetic field would imply that Psyche formed through igneous differentiation.

Conclusions:

The presence of a magnetic field would provide strong evidence for Psyche's origin as a planetary core.
This investigation contributes to understanding the formation and evolution of terrestrial bodies in the early solar system.