27 July 2015 to 21 August 2015
Nordita, Stockholm
Europe/Stockholm timezone

Magnetic Reconnection in Plasma Turbulence: from MHD to Vlasov Models

10 Aug 2015, 14:00
25m
FD5 (Nordita, Stockholm)

FD5

Nordita, Stockholm

Invited Workshop, August 10-14 Post-noon I

Speaker

Dr Sergio Servidio (University of Calabria)

Description

Systematic analysis of numerical simulations of two-dimensional magnetohydrodynamic (2D MHD) turbulence reveals the presence of a large number of X-type neutral points, where magnetic reconnection locally occurs [1]. The associated reconnection rates are distributed over a wide range of values and scales, exhibiting a good agreement with existing theories of magnetic reconnection. This scenario has been further inspected in the contest of Hall MHD and Hybrid-Vlasov models [2]. In particular, kinetic simulations suggest that these inhomogeneous magnetic structures may be the important sites of processes such as heating, temperature anisotropy, and particle acceleration - phenomena commonly observed in nature. This new perspective on reconnection is relevant for both astrophysical and laboratory systems, where plasma is generally in a fully turbulent regime. [1] S. Servidio et al., Phys. Rev. Lett. 102, 115003 (2009) [2] S. Servidio et al. Phys. Rev. Lett. 108, 045001 (2012)

Primary author

Dr Sergio Servidio (University of Calabria)

Co-authors

Dr Antonella Greco (University of Calabria) Dr Denise Perrone (LESIA, Observatoire de Paris) Prof. Francesco Califano (University of Pisa) Dr Francesco Valentini (University of Calabria) Dr Kareem Osman (University of Warwick) Dr Pablo Dmitruk (University of Buenos Aires) Prof. Pierluigi Veltri (University of Calabria) Prof. Vincenzo Carbone (University of Calabria) Prof. William H. Matthaeus (University of Delaware)

Presentation materials