@article{Franci:2017:2041-8213/aa93fb,
author = {Franci, L and Cerri, SS and Califano, F and Landi, S and Papini, E and Verdini, A and Matteini, L and Jenko, F and Hellinger, P},
doi = {2041-8213/aa93fb},
journal = {ASTROPHYSICAL JOURNAL LETTERS},
title = {Magnetic Reconnection as a Driver for a Sub-ion-scale Cascade in Plasma Turbulence},
url = {http://dx.doi.org/10.3847/2041-8213/aa93fb},
volume = {850},
year = {2017}
}

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TY  - JOUR
AB  - A new path for the generation of a sub-ion-scale cascade in collisionless space and astrophysical plasma turbulence, triggered by magnetic reconnection, is uncovered by means of high-resolution two-dimensional hybrid-kinetic simulations employing two complementary approaches, Lagrangian and Eulerian, and different driving mechanisms. The simulation results provide clear numerical evidence that the development of power-law energy spectra below the so-called ion break occurs as soon as the first magnetic reconnection events take place, regardless of the actual state of the turbulent cascade at MHD scales. In both simulations, the reconnection-mediated small-scale energy spectrum of parallel magnetic fluctuations exhibits a very stable spectral slope of $\sim -2.8$, whether or not a large-scale turbulent cascade has already fully developed. Once a quasi-stationary turbulent state is achieved, the spectrum of the total magnetic fluctuations settles toward a spectral index of $-5/3$ in the MHD range and of $\sim -3$ at sub-ion scales.
AU  - Franci,L
AU  - Cerri,SS
AU  - Califano,F
AU  - Landi,S
AU  - Papini,E
AU  - Verdini,A
AU  - Matteini,L
AU  - Jenko,F
AU  - Hellinger,P
DO  - 2041-8213/aa93fb
PY  - 2017///
SN  - 2041-8205
TI  - Magnetic Reconnection as a Driver for a Sub-ion-scale Cascade in Plasma Turbulence
T2  - ASTROPHYSICAL JOURNAL LETTERS
UR  - http://dx.doi.org/10.3847/2041-8213/aa93fb
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000415860700002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/62054
VL  - 850
ER  - 

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