Search Results - "Rohrmann, René D"

Rayleigh scattering in dense fluid helium by Rohrmann, René D.

“…AbstractIglesias et al. showed that the Rayleigh scattering from helium atoms decreases by collective effects in the atmospheres of cool white dwarf stars…”
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Equation of state for five-dimensional hyperspheres from the chemical-potential route by Rohrmann, René D, Santos, Andrés

“…We use the Percus-Yevick approach in the chemical-potential route to evaluate the equation of state of hard hyperspheres in five dimensions. The evaluation…”
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Multicomponent fluids of hard hyperspheres in odd dimensions by Rohrmann, René D, Santos, Andrés

“…Mixtures of hard hyperspheres in odd-space dimensionalities are studied with an analytical approximation method. This technique is based on the so-called…”
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A white dwarf cooling age of 8 Gyr for NGC 6791 from physical separation processes by Torres, Santiago, Córsico, Alejandro H, Althaus, Leandro G, Rohrmann, René D, Isern, Jordi, García-Berro, Enrique, Renedo, Isabel, Salaris, Maurizio, Lorén-Aguilar, Pablo

“…NGC 6791 is a well studied open cluster that it is so close to us that can be imaged down to very faint luminosities. The main-sequence turn-off age (∼8 Gyr)…”
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Updated Evolutionary Sequences for Hydrogen-deficient White Dwarfs by Camisassa, María E., Althaus, Leandro G., Rohrmann, René D., García-Berro, Enrique, Torres, Santiago, Córsico, Alejandro H., Wachlin, Felipe C.

“…We present a set of full evolutionary sequences for white dwarfs with hydrogen-deficient atmospheres. We take into account the evolutionary history of the…”
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Chemical-potential route for multicomponent fluids by Santos, Andrés, Rohrmann, René D

“…The chemical potentials of multicomponent fluids are derived in terms of the pair correlation functions for arbitrary number of components, interaction…”
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Equation of state of sticky-hard-sphere fluids in the chemical-potential route by Rohrmann, René D, Santos, Andrés

“…The coupling-parameter method, whereby an extra particle is progressively coupled to the rest of the particles, is applied to the sticky-hard-sphere fluid to…”
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Structure of hard-hypersphere fluids in odd dimensions by Rohrmann, René D, Santos, Andrés

“…The structural properties of single component fluids of hard hyperspheres in odd space dimensionalities d are studied with an analytical approximation method…”
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Conditional pair distributions in many-body systems: exact results for Poisson ensembles by Rohrmann, René D, Zurbriggen, Ernesto

“…We introduce a conditional pair distribution function (CPDF) which characterizes the probability density of finding an object (e.g., a particle in a fluid) to…”
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A candidate magnetic helium-core white dwarf in the globular cluster NGC 6397 by Pichardo Marcano, Manuel, Rivera Sandoval, Liliana E, Maccarone, Thomas J, Rohrmann, Rene D, Heinke, Craig O, Belloni, Diogo, Althaus, Leandro G, Bahramian, Arash

“…ABSTRACT We report a peculiar variable blue star in the globular cluster (GC) NGC 6397, using Hubble Space Telescope optical imaging. Its position in the…”
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Exact solution of the Percus-Yevick integral equation for fluid mixtures of hard hyperspheres by Rohrmann, René D, Santos, Andrés

“…Structural and thermodynamic properties of multicomponent hard-sphere fluids at odd dimensions have recently been derived in the framework of the rational…”
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A numerical code for the analysis of magnetic white dwarf spectra that includes field effects on the chemical equilibrium by Vera-Rueda, Matías, Rohrmann, René D

“…A&A 687, A141 (2024) We present a new magnetic-atmosphere model code for obtaining synthetic spectral fluxes of hydrogen-rich magnetic white dwarfs. To date,…”
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Diagnosing pulsar winds in black-widow, redback, and other binary millisecond pulsar systems by Zilles, Anne, Kotera, Kumiko, Rohrmann, Rene, Althaus, Leandro

“…ABSTRACT Binary systems composed of a recycled millisecond pulsar and a stellar companion in close orbit could be excellent sites to diagnose pulsar winds. In…”
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A new statistical mechanical formalism for gases by Rohrmann, René D.

“…An equilibrium theory of classical fluids based on the space distribution among the particles is derived in the framework of the energy minimization method…”
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Rayleigh scattering from hydrogen atoms including resonances and high photon energies by Rohrmann, René D, Rueda, Matías Vera

“…A&A 667, A3 (2022) The non-relativistic cross section from Rayleigh scattering by hydrogen atoms in the ground state is calculated over a wide range of photon…”
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Rayleigh scattering in dense fluid helium by Rohrmann, René D

“…Iglesias et al. (2002) showed that the Rayleigh scattering from helium atoms decreases by collective effects in the atmospheres of cool white dwarf stars…”
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Hydrogen ionization equilibrium in magnetic fields by Rueda, Matías Vera, Rohrmann, René D

“…A&A 635, A180 (2020) We assess the partition function and ionization degree of magnetized hydrogen atoms at thermodynamic equilibrium for a wide range of field…”
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Equation of state for five-dimensional hyperspheres from the chemical-potential route by Rohrmann, René D, Santos, Andrés

“…Phys. Rev. E 92, 022303 (2015) We use the Percus-Yevick approach in the chemical-potential route to evaluate the equation of state of hard hyperspheres in five…”
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A kinetic model for rotating diluted gaseous envelopes in a central field by Rohrmann, R. D.

“…A model based on the kinetic theory is proposed for tenuous gaseous envelopes subject to a central attraction field. Quasi-steady states are studied where the…”
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Equation of state of sticky-hard-sphere fluids in the chemical-potential route by Rohrmann, René D, Santos, Andrés

“…Phys. Rev. E 89, 042121 (2014) The coupling-parameter method, whereby an extra particle is progressively coupled to the rest of the particles, is applied to…”
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