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of 131
pro vyhledávání: '"Kalapotharakos, C"'
Numerical simulations of relativistic plasmas have become more feasible, popular, and crucial for various astrophysical sources with the availability of computational resources. The necessity for high-accuracy particle dynamics is especially highligh
Externí odkaz:
http://arxiv.org/abs/2407.16505
Akademický článek
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Using both numerical and analytical approaches, we demonstrate the existence of an effective power-law relation $L\propto m^p$ between the mean Lyapunov exponent $L$ of stellar orbits chaotically scattered by a supermassive black hole in the center o
Externí odkaz:
http://arxiv.org/abs/1501.05577
We present the orbital analysis of four response models, that succeed in reproducing morphological features of NGC 1300. Two of them assume a planar (2D) geometry with $\Omega_p$=22 and 16 \ksk respectively. The two others assume a cylindrical (thick
Externí odkaz:
http://arxiv.org/abs/1009.0403
We study the stellar response in a spectrum of potentials describing the barred spiral galaxy NGC 1300. These potentials have been presented in a previous paper and correspond to three different assumptions as regards the geometry of the galaxy. For
Externí odkaz:
http://arxiv.org/abs/1009.0383
Publikováno v:
Mon. Not. R. Astron. Soc. 403, 83-95 (2010)
In a series of papers we study the stellar dynamics of the grand design barred-spiral galaxy NGC~1300. In the first paper of this series we estimate the gravitational potential and we give it in a form suitable to be used in dynamical studies. The es
Externí odkaz:
http://arxiv.org/abs/1009.0376
Autor:
Patsis, P. A., Kalapotharakos, C.
The pattern speeds of spiral galaxies are closely related to the flow of material in their disks. Flows that follow the `precessing ellipses' paradigm (see e.g., Kalnajs 1973) are likely associated with slowly rotating spirals, which have corotation
Externí odkaz:
http://arxiv.org/abs/1002.1259
The general theory of motion in the vicinity of a moving quantum nodal point (vortex) is studied in the framework of the de Broglie - Bohm trajectory method of quantum mechanics. Using an adiabatic approximation, we find that near any nodal point of
Externí odkaz:
http://arxiv.org/abs/0903.2655
The unstable invariant manifolds of the short-period family of periodic orbits around the unstable Lagrangian points $L_1$ and $L_2$ of a barred galaxy define loci in the configuration space which take the form of a trailing spiral pattern. In the pr
Externí odkaz:
http://arxiv.org/abs/0811.4521
Publikováno v:
Mon.Not.Roy.Astron.Soc.372:901-922,2006
Dissipationless N-body models of rotating galaxies, iso-energetic to a non-rotating model, are examined as regards the mass in regular and in chaotic motion. The values of their spin parameters $\lambda$ are near the value $\lambda=0.22$ of our Galax
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606561