4 papers · 1 filter
Short-N characteristic radiative transfer method in 2D cylindrical RZ coordinates
Nicolas A. Pereyra, Joseph J. MacFarlane, Pamela R. Woodruff +2
We present a new radiative transfer method Short-N Characteristics that is a hybrid between the standard long characteristic methods and the standard short characteristic methods.…
Characteristic QSO Accretion Disk Temperatures from Spectroscopic Continuum Variability
Nicolas A. Pereyra, Daniel E. Vanden Berk, David A. Turnshek +5
Using Sloan Digital Sky Survey (SDSS) quasar spectra taken at multiple epochs, we find that the composite flux density differences in the rest frame wavelength range 1300-6000 AA c…
On the Steady Nature of Line-Driven Disk Winds: Application to Cataclysmic Variables
Nicolas A. Pereyra, David A. Turnshek, D. John Hillier
We apply the semi-analytical analysis of the steady nature of line-driven winds presented in two earlier papers to disk winds driven by the flux distribution of a standard Shakura…
Further Criteria for the Existence of Steady Line-Driven Winds
N. A. Pereyra
In Paper I, we showed that steady line-driven disk wind solutions can exist by using "simple" models that mimic the disk environment. Here I extend the concepts introduced in Paper…