E
Ewa L. Lokas
Researcher at The Racah Institute of Physics
Publications - 68
Citations - 3279
Ewa L. Lokas is an academic researcher from The Racah Institute of Physics. The author has contributed to research in topics: Galaxy & Velocity dispersion. The author has an hindex of 31, co-authored 63 publications receiving 3264 citations.
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Journal ArticleDOI
Properties of spherical galaxies and clusters with an NFW density profile
Ewa L. Lokas,Gary A. Mamon +1 more
TL;DR: In this paper, the properties of spherical galaxies and clusters whose density profiles obey the universal form first obtained in high resolution cosmological N-body simulations by Navarro, Frenk & White are analyzed.
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Dark matter distribution in the Coma cluster from galaxy kinematics: breaking the mass-anisotropy degeneracy
Ewa L. Lokas,Gary A. Mamon +1 more
TL;DR: In this article, the authors study the velocity moments of elliptical galaxies in the Coma cluster using Jeans equations and determine the dark matter distribution at radial distances larger than 3% of the virial radius and find that the galaxy orbits are close to isotropic.
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Dark matter in elliptical galaxies: II. Estimating the mass within the virial radius
Gary A. Mamon,Ewa L. Lokas +1 more
TL;DR: In this paper, Navarro et al. modelled a 4-component model: Sersic stars, LCDM dark matter (DM), hot gas and central black hole.
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The structure of voids
TL;DR: In this article, the authors used high-resolution N-body simulations to study the emptiness of giant 20 Mpc/h diameter voids found in the distribution of bright galaxies and found that the voids in these voids are almost the same as those in 10^12 Msun/h haloes.
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On the Efficiency of the Tidal Stirring Mechanism for the Origin of Dwarf Spheroidals: Dependence on the Orbital and Structural Parameters of the Progenitor Disky Dwarfs
TL;DR: In this paper, the authors explore a wide variety of dwarf orbital configurations and initial structures and demonstrate that in most cases the disky dwarfs experience significant mass loss and their stellar components undergo a dramatic morphological and dynamical transformation: from disks to bars and finally to pressure-supported spheroidal systems with kinematic and structural properties akin to those of the classic dSphs in the Local Group (LG).