The Effect of the Transition Times in the Formation of Planetary Nebulae
We have explored the effect of transition timescales in planetary nebulae (PNe) formation. We have performed hydrodynamical simulations of the evolution of the...
The Effect of Turbulent Electric Fields on the Scattering Polarization of Hydrogen Lines
We reviewed the polarization properties of hydrogen lines in the presence of electric and magnetic fields. We first considered the case of completely...
The Effects Of B/L-dependent Heating On The Formation And Evolution Of A Multi-threaded Prominence
We have developed a comprehensive, multi-threaded, three-dimensional model of the plasma dynamics and energetics of a prominence and its overlying arcade (Luna...
The Egyptian Civil Calendar: a Masterpiece to Organize the Cosmos
The ancient Egyptians had just one calendar in operation, the civil one, during most of their history and before the overwhelming influence of Hellenic culture...