Show simple item record

dc.contributor.authorFu, Roger Rennan
dc.contributor.authorWeiss, Benjamin P.
dc.date.accessioned2012-10-23T17:31:45Z
dc.date.available2012-10-23T17:31:45Z
dc.date.issued2012-02
dc.date.submitted2011-08
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/1721.1/74216
dc.description.abstractWe introduce the theoretical basis of a new form of remanent magnetization that likely formed on primitive bodies in the solar system. Accretional detrital remanent magnetization (ADRM) operates via “compass needle”-type alignment of ferromagnetic solids with locally uniform background fields in the solar nebula. Accretion of coherently aligned magnetic particles should have formed aggregates up to centimeters in size with significant net magnetic moment. We quantify several processes that constrain the likelihood of ADRM formation, finding that rotational gas damping and background field intensities expected for the solar nebula are sufficient to mutually align magnetic particles with diameters between ∼30 μm and several cm. The lower bound is dictated by Brownian motion or radiative torque while the upper bound is set by aerodynamic torque on non-spherical particles. Processes important for interstellar dust dynamics such as Larmor-type precession and Purcell torque are less significant in the solar nebula. ADRM can be potentially observed as zones of coherent magnetization in primitive chondrites and may be detected by spacecraft magnetic field observations on the surfaces of small bodies. Observational identification and characterization of ADRM would constrain the strength and geometry of magnetic fields in the early solar system, the accretion process of sub-meter sized objects, the formation regions of chondrite parent bodies, and the alteration history of chondritic components.en_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration. Origins Programen_US
dc.language.isoen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.isversionofhttp://dx.doi.org/ 10.1029/2011je003925en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceMIT web domainen_US
dc.titleDetrital remanent magnetization in the solar nebulaen_US
dc.typeArticleen_US
dc.identifier.citationFu, Roger R., and Benjamin P. Weiss. “Detrital Remanent Magnetization in the Solar Nebula.” Journal of Geophysical Research 117.E2 (2012). ©2012 American Geophysical Unionen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorFu, Roger Rennan
dc.contributor.mitauthorWeiss, Benjamin P.
dc.relation.journalJournal of Geophysical Research Planetsen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsFu, Roger R.; Weiss, Benjamin P.en
dc.identifier.orcidhttps://orcid.org/0000-0003-3113-3415
dc.identifier.orcidhttps://orcid.org/0000-0003-3635-2676
mit.licensePUBLISHER_POLICYen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record