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)
