Effect of magnetic islands on the localization of kinetic Alfvén wave

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dc.contributor.authorRai, Rajesh Kumar
dc.contributor.authorSharma, Swati
dc.contributor.authorYadav, Nitin
dc.contributor.authorGoldstein, Melvyn
dc.contributor.authorSharma, R. P.
dc.date.accessioned2024-01-17T11:31:48Z
dc.date.available2024-01-17T11:31:48Z
dc.date.issued2015-12-09
dc.description.abstractRecent studies have revealed an intimate link between magnetic reconnection and turbulence. Observations show that kinetic Alfvén waves (KAWs) play a very crucial role in magnetic reconnection and have been a topic of interest from decades in the context of turbulence and particle heating. In the present paper, we study the role that KAW plays in the formation of coherent structures/current sheets when KAW is propagating in the pre-existing fully developed chain of magnetic islands. We derived the dynamical equation of KAW in the presence of chain of magnetic islands and solved it using numerical simulations well as analytic tools. Due to pre-existing chain of magnetic islands, KAW splits into coherent structures and the scale size of these structures along transverse directions (with respect to background magnetic field) comes out to be either less than or greater than ion gyro radius. Therefore, the present work may be the first step towards understanding how magnetic reconnection generated islands may affect the KAW localization and eventually contribute to magnetic turbulence. In this way the present approach may be helpful to understand the interplay between magnetic reconnection and turbulence in ion diffusion region.
dc.description.sponsorshipWe acknowledge fruitful and helpful discussions by Paul Cassak. This work was partially supported by the Council for Scientific and Industrial Research (CSIR) under Grant No. 221251160, Indian Space Research Organization (ISRO) under RESPOND Program and the Department of Science and Technology (DST), India.
dc.description.urihttps://pubs.aip.org/aip/pop/article-abstract/22/12/122106/785236/Effect-of-magnetic-islands-on-the-localization-of
dc.format.extent7 pages
dc.genrejournal articles
dc.identifier.citationRajesh Kumar Rai, Swati Sharma, Nitin Yadav, M. L. Goldstein, R. P. Sharma; Effect of magnetic islands on the localization of kinetic Alfvén wave. Phys. Plasmas 1 December 2015; 22 (12): 122106. https://doi.org/10.1063/1.4936873
dc.identifier.urihttps://doi.org/10.1063/1.4936873
dc.identifier.urihttp://hdl.handle.net/11603/31314
dc.language.isoen_US
dc.publisherAIP
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Goddard Planetary Heliophysics Institute (GPHI)
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain Mark 1.0 en
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.titleEffect of magnetic islands on the localization of kinetic Alfvén wave
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-5317-988X

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