Chaotic transients and hysteresis in an α2 dynamo model

dc.contributor.author	Oliveira, D.N.
dc.contributor.author	Rempel, E.L.
dc.contributor.author	Chertovskih, R.
dc.contributor.author	Karak, B.B.
dc.date.accessioned	2021-07-30T06:20:08Z
dc.date.available	2021-07-30T06:20:08Z
dc.date.issued	2021-06
dc.identifier.issn	2632072X
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/1540
dc.description.abstract	The presence of chaotic transients in a nonlinear dynamo is investigated through numerical simulations of the 3D magnetohydrodynamic equations. By using the kinetic helicity of the flow as a control parameter, a hysteretic blowout bifurcation is conjectured to be responsible for the transition to dynamo, leading to a sudden increase in the magnetic energy of the attractor. This high-energy hydromagnetic attractor is suddenly destroyed in a boundary crisis when the helicity is decreased. Both the blowout bifurcation and the boundary crisis generate long chaotic transients that are due, respectively, to a chaotic saddle and a relative chaotic attractor. © 2021 The Author(s). Published by IOP Publishing Ltd.	en_US
dc.language.iso	en_US	en_US
dc.publisher	Web Portal IOP	en_US
dc.relation.ispartofseries	JPhys Complexity;Volume 2, Issue 2
dc.subject	chaotic transient	en_US
dc.subject	nonlinear dynamo	en_US
dc.subject	MHD simulation	en_US
dc.subject	boundary crisis	en_US
dc.subject	hysteretic blowout bifurcation	en_US
dc.title	Chaotic transients and hysteresis in an α2 dynamo model	en_US
dc.type	Article	en_US