Enhanced Cloud Disruption by Magnetic Field Interaction | Zendy

G. Gregori | Zendy; Francesco Miniati | Zendy; Dongsu Ryu | Zendy; T. W. Jones | Zendy

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Enhanced Cloud Disruption by Magnetic Field Interaction

Author(s) -

G. Gregori,

Francesco Miniati,

Dongsu Ryu,

T. W. Jones

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312402

Subject(s) - cloud computing , magnetic field , supersonic speed , physics , perpendicular , field (mathematics) , surface (topology) , mechanics , geometry , computer science , mathematics , quantum mechanics , pure mathematics , operating system

We present results from the first three-dimensional numerical simulations ofmoderately supersonic cloud motion through a tenuous, magnetized medium. Weshow that the interaction of the cloud with a magnetic field perpendicular toits motion has a great dynamical impact on the development of instabilities atthe cloud surface. Even for initially spherical clouds, magnetic field linesbecome trapped in surface deformations and undergo stretching. The consequentfield amplification that occurs there and particularly its variation across thecloud face then dramatically enhance the growth rate of Rayleigh-Taylorunstable modes, hastening the cloud disruption.

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