Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS

New Magnetospheric Multiscale (MMS) observations of small‐scale (~7 ion inertial length radius) flux transfer events (FTEs) at the dayside magnetopause are reported. The 10 km MMS tetrahedron size enables their structure and properties to be calculated using a variety of multispacecraft techniques,...

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Main Authors:	Eastwood, J. P., Phan, T. D., Cassak, P. A., Gershman, D. J., Haggerty, C., Malakit, K., Shay, M. A., Mistry, R., Øieroset, M., Russell, C. T., Slavin, J. A., Argall, M. R., Avanov, L. A., Burch, J. L., Chen, L. J., Dorelli, J. C., Ergun, R. E., Giles, B. L., Khotyaintsev, Y., Lavraud, B., Lindqvist, P. A., Moore, T. E., Nakamura, R., Paterson, W., Pollock, C., Strangeway, R. J., Torbert, R. B., Wang, S.
Format:	Online
Language:	English
Published:	John Wiley and Sons Inc. 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5001194/

id	pubmed-5001194
recordtype	oai_dc
spelling	pubmed-50011942016-09-13 Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS Eastwood, J. P. Phan, T. D. Cassak, P. A. Gershman, D. J. Haggerty, C. Malakit, K. Shay, M. A. Mistry, R. Øieroset, M. Russell, C. T. Slavin, J. A. Argall, M. R. Avanov, L. A. Burch, J. L. Chen, L. J. Dorelli, J. C. Ergun, R. E. Giles, B. L. Khotyaintsev, Y. Lavraud, B. Lindqvist, P. A. Moore, T. E. Nakamura, R. Paterson, W. Pollock, C. Strangeway, R. J. Torbert, R. B. Wang, S. Research Letters New Magnetospheric Multiscale (MMS) observations of small‐scale (~7 ion inertial length radius) flux transfer events (FTEs) at the dayside magnetopause are reported. The 10 km MMS tetrahedron size enables their structure and properties to be calculated using a variety of multispacecraft techniques, allowing them to be identified as flux ropes, whose flux content is small (~22 kWb). The current density, calculated using plasma and magnetic field measurements independently, is found to be filamentary. Intercomparison of the plasma moments with electric and magnetic field measurements reveals structured non‐frozen‐in ion behavior. The data are further compared with a particle‐in‐cell simulation. It is concluded that these small‐scale flux ropes, which are not seen to be growing, represent a distinct class of FTE which is generated on the magnetopause by secondary reconnection. John Wiley and Sons Inc. 2016-05-18 2016-05-28 /pmc/articles/PMC5001194/ /pubmed/27635105 http://dx.doi.org/10.1002/2016GL068747 Text en ©2016. The Authors. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Eastwood, J. P. Phan, T. D. Cassak, P. A. Gershman, D. J. Haggerty, C. Malakit, K. Shay, M. A. Mistry, R. Øieroset, M. Russell, C. T. Slavin, J. A. Argall, M. R. Avanov, L. A. Burch, J. L. Chen, L. J. Dorelli, J. C. Ergun, R. E. Giles, B. L. Khotyaintsev, Y. Lavraud, B. Lindqvist, P. A. Moore, T. E. Nakamura, R. Paterson, W. Pollock, C. Strangeway, R. J. Torbert, R. B. Wang, S.
spellingShingle	Eastwood, J. P. Phan, T. D. Cassak, P. A. Gershman, D. J. Haggerty, C. Malakit, K. Shay, M. A. Mistry, R. Øieroset, M. Russell, C. T. Slavin, J. A. Argall, M. R. Avanov, L. A. Burch, J. L. Chen, L. J. Dorelli, J. C. Ergun, R. E. Giles, B. L. Khotyaintsev, Y. Lavraud, B. Lindqvist, P. A. Moore, T. E. Nakamura, R. Paterson, W. Pollock, C. Strangeway, R. J. Torbert, R. B. Wang, S. Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
author_facet	Eastwood, J. P. Phan, T. D. Cassak, P. A. Gershman, D. J. Haggerty, C. Malakit, K. Shay, M. A. Mistry, R. Øieroset, M. Russell, C. T. Slavin, J. A. Argall, M. R. Avanov, L. A. Burch, J. L. Chen, L. J. Dorelli, J. C. Ergun, R. E. Giles, B. L. Khotyaintsev, Y. Lavraud, B. Lindqvist, P. A. Moore, T. E. Nakamura, R. Paterson, W. Pollock, C. Strangeway, R. J. Torbert, R. B. Wang, S.
author_sort	Eastwood, J. P.
title	Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
title_short	Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
title_full	Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
title_fullStr	Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
title_full_unstemmed	Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS
title_sort	ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by mms
description	New Magnetospheric Multiscale (MMS) observations of small‐scale (~7 ion inertial length radius) flux transfer events (FTEs) at the dayside magnetopause are reported. The 10 km MMS tetrahedron size enables their structure and properties to be calculated using a variety of multispacecraft techniques, allowing them to be identified as flux ropes, whose flux content is small (~22 kWb). The current density, calculated using plasma and magnetic field measurements independently, is found to be filamentary. Intercomparison of the plasma moments with electric and magnetic field measurements reveals structured non‐frozen‐in ion behavior. The data are further compared with a particle‐in‐cell simulation. It is concluded that these small‐scale flux ropes, which are not seen to be growing, represent a distinct class of FTE which is generated on the magnetopause by secondary reconnection.
publisher	John Wiley and Sons Inc.
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5001194/
_version_	1613637363579224064

Ion‐scale secondary flux ropes generated by magnetopause reconnection as resolved by MMS

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