49 citations · 136 across the 12 of their papers we have counts for
5 papers · 1 filter
On the mean field dynamo with Hall effect
A. Kandus, M. J. Vasconcelos, A. H. Cerqueira
We study in the present paper how Hall effect modifies the quenching process of the electromotive force (e.m.f.) in Mean Field Dynamo (MFD) theories. We write down the evolution eq…
Emission lines from rotating proto-stellar jets with variable velocity profiles. I. Three-dimensional numerical simulation of the non-magnetic case
A. H. Cerqueira, P. F. Velazquez, A. C. Raga +2
Using the Yguazu-a three-dimensional hydrodynamic code, we have computed a set of numerical simulations of heavy, supersonic, radiatively cooling jets including variabilities in bo…
GMOS-IFU Spectroscopy of 167-317 (LV2) Proplyd in Orion
M. J. Vasconcelos, A. H. Cerqueira, H. Plana +2
We present high spatial resolution spectroscopic observations of the proplyd 167-317 (LV2) near the Trapezium cluster in the Orion nebula, obtained during the System Verification r…
The role of damped Alfven waves on magnetospheric accretion models of young stars
M. J. Vasconcelos, V. Jatenco-Pereira, R. Opher
We examine the role of Alfven wave damping in heating the plasma in the magnetic funnels of magnetospheric accretion models of young stars. We study four different damping mechanis…
Alfvenic Heating of Protostellar Accretion Disks
M. J. Vasconcelos, V. Jatenco-Pereira, R. Opher
We investigate the effects of heating generated by damping of Alfven waves on protostellar accretion disks. Two mechanisms of damping are investigated, nonlinear and turbulent, whi…