Ferromagmatic Intrusions on Asteroid (16) Psyche May Be Magnetized

IF 4 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
Samuel W. Courville, Hannah R. Sanderson, Carver J. Bierson, Linda T. Elkins-Tanton, Rona Oran, Joseph G. O'Rourke, Christopher T. Russell, Benjamin P. Weiss, David A. Williams
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Abstract

NASA's Psyche mission will arrive at the metal-rich asteroid (16) Psyche in 2029. The mission will test whether (16) Psyche is a remnant of a melted, differentiated planetesimal that formed a molten iron metallic core. Previous studies have suggested that a molten metallic core fluid could erupt volcanically, explaining the high metal content of (16) Psyche's surface. Here we describe an origin story for (16) Psyche using thermal and compositional evolution modeling that outlines when ferrovolcanism could occur. We highlight how Psyche's Magnetometer could detect remanent magnetization associated with mantle intrusions of the core metal.

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小行星(16)心灵上的铁磁侵入可能被磁化了
美国宇航局的普赛克任务将于2029年抵达富含金属的小行星普赛克。该任务将测试灵神星是否是熔化的、分化的星子的残余物,这些星子形成了熔化的铁金属核心。先前的研究表明,熔融的金属核心流体可能会以火山的方式喷发,这就解释了灵神星表面金属含量高的原因。在这里,我们描述了普赛克(16)的起源故事,使用热和成分演化模型,勾勒出铁火山作用可能发生的时间。我们强调普赛克的磁力计如何能够探测到与地核金属的地幔侵入有关的剩余磁化。
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来源期刊
Journal of Geophysical Research: Planets
Journal of Geophysical Research: Planets Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)
CiteScore
8.00
自引率
27.10%
发文量
254
期刊介绍: The Journal of Geophysical Research Planets is dedicated to the publication of new and original research in the broad field of planetary science. Manuscripts concerning planetary geology, geophysics, geochemistry, atmospheres, and dynamics are appropriate for the journal when they increase knowledge about the processes that affect Solar System objects. Manuscripts concerning other planetary systems, exoplanets or Earth are welcome when presented in a comparative planetology perspective. Studies in the field of astrobiology will be considered when they have immediate consequences for the interpretation of planetary data. JGR: Planets does not publish manuscripts that deal with future missions and instrumentation, nor those that are primarily of an engineering interest. Instrument, calibration or data processing papers may be appropriate for the journal, but only when accompanied by scientific analysis and interpretation that increases understanding of the studied object. A manuscript that describes a new method or technique would be acceptable for JGR: Planets if it contained new and relevant scientific results obtained using the method. Review articles are generally not appropriate for JGR: Planets, but they may be considered if they form an integral part of a special issue.
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