170 citations · 359 across the 14 of their papers we have counts for
14 papers
A systematic route to subcritical dynamo branches
Paul M. Mannix, Yannick Ponty, Florence Marcotte
We demonstrate that the nonlinear optimisation of a finite-amplitude disturbance over a freely evolving and possibly even turbulent flow, can successfully identify subcritical dyna…
Transition from large-scale to small-scale dynamo
Yannick Ponty, Franck Plunian
The dynamo equations are solved numerically with a helical forcing corresponding to the Roberts flow. In the fully turbulent regime the flow behaves as a Roberts flow on long time…
Counting and sampling gene family evolutionary histories in the duplication-loss and duplication-loss-transfer models
Cedric Chauve, Yann Ponty, Michael Wallner
Given a set of species whose evolution is represented by a species tree, a gene family is a group of genes having evolved from a single ancestral gene. A gene family evolves along…
Small-world networks and RNA secondary structures
Defne Surujon, Yann Ponty, Peter Clote
Let Sn denote the network of all RNA secondary structures of length n, in which undirected edges exist between structures s, t such that t is obtained from s by the addition, remov…
Dynamo enhancement and mode selection triggered by high magnetic permeability
Sophia Kreuzahler, Yannick Ponty, Nicolas Plihon +2
We present results from consistent dynamo simulations, where the electrically conducting and incompressible flow inside a cylinder vessel is forced by moving impellers numerically…
Dissipative structures in a nonlinear dynamo
Andrew D. Gilbert, Yannick Ponty, Vladislav Zheligovsky
This paper considers magnetic field generation by a fluid flow in a system referred to as the Archontis dynamo: a steady nonlinear magnetohydrodynamic (MHD) state is driven by a pr…