Tuesday 21 May 2013
Research Center for Astronomy and Applied Mathematics of the Academy of Athens
Backbones of stellar barred-spiral morphologies
The Speed of Arnold Diffusion
Christos Efthymiopoulos, Mirella Harsoula
(to appear in Physica D)
Magnetic Energy and Helicity Budgets in the Active-Region Solar Corona. II. Nonlinear Force-Free Approximation
M. K. Georgoulis, K. Tziotziou, N.-E. Raouafi
The Magnetic Energy - Helicity Diagram of Solar Active Regions
Kostas Tziotziou, Manolis K. Georgoulis, Nour-Eddine Raouafi
Non-neutralized Electric Current Patterns in Solar Active Regions: Origin of the Shear-Generating Lorentz Force
Manolis K. Georgoulis, Viacheslav S. Titov, Zoran Mikic
The structure of phase space close to fixed points in a 4D symplectic map
L. Zachilas, M. Katsanikas, P. A. Patsis
A generalized growth index parametrization: Applications to the LamdaCDM using the WiggleZ growth data
Order in de Broglie - Bohm Quantum Mechanics
Contopoulos, G., Delis, N., and Efthymiopoulos, C.
(To appear in J. Phys. A.: Math. Theor. pp 1-23)
On Our Ability to Predict Major Solar Flares
(To appear in
Astroph. Space Sci. Proc. V. N. Obridko, K. Georgieva, Yu. A. Nagovitsyn, Eds.)
A Consistent Comparison of Bias Models using Observational Data
A. Papageorgiou, M. Plionis, S. Basilakos, C. Ragone-Figueroa
To appear in MNRAS
Instabilities and stickiness in a 3D rotating galactic potential
M. Katsanikas, P.A. Patsis and G. Contopoulos
(to appear in IJBC)
Quantum Vortices and Trajectories in Particle Diffraction
N. Delis, C. Efthymiopoulos and G. Contopoulos
(to appear in an IJBC Special Issue edited by G. Nicolis, M. Robnik, V. Rothos and H. Skokos)
Dynamics and Constraints of the Massive Gravitons Dark Matter Flat Cosmologies
Basilakos, S., Plionis, M., Alves, M. E. S. and Lima, J. A. S.
Using the Noether symmetry approach to probe the nature of dark energy
Basilakos, S., Tsamparlis, M. and Paliathanasis, A.
Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution
Grande J., Sola, J., Basilakos S. and Plionis M.
Orbits in a non-Kerr Dynamical System
Contopoulos G., Lukes-Gerakopoulos G. and Apostolatos T.A.
(to appear in IJBC Special Issue edited by G. Nicolis, M. Robnik, V. Rothos and H. Skokos)
Structures out of Chaos in barred-spiral galaxies
Patsis P. A.
(Review paper to be published in IJBC)
Dynamical Mechanisms supporting Barred-Spiral Structures
Patsis P. A.
(AApTr 2012, 27, 113)
Chains of rotational tori and filamentary structures close to high multiplicity periodic orbits in a 3D galactic potential
Katsanikas, M., Patsis P. A. and Pinotsis A.
(IJBC, in press)
The structure and evolution of confined tori near a Hamiltonian Hopf Bifurcation
Katsanikas, M., Patsis P. A. and Contopoulos G.
(IJBC, in press)
The Generalized Uncertainty Principle and Quantum Gravity Phenomenology
Farag Ali, A., Das, S., Vagenas, E.C.
(Proceedings of the Eleventh Marcel Grossmann Meeting on General Relativity - World Scientific - in press)
News & Announcements
The Research Center for Astronomy and Applied Mathematics (RCAAM), is one of the Research Institutes of the Academy of Athens.
Core competences of RCAAM are Galactic Dynamics and Galactic Morphology, Nonlinear Dynamics and Chaos Theory, Solar Physics, Magnetohydrodynamics, Cosmology and Gravitation.
We are working towards comparing theoretical results with observational data from ground based as well as from space observatories (VLT, Solar Orbiter etc.). The main scientific goals for the period 2009-12 include the study of the role of Chaos in supporting structures in N-body simulations, the Dynamics of the Milky Way and other galaxies, the study of the magnetic connectivity in the active-regions of the solar atmosphere, the investigation of particle accelleration in the pulsar magnetosphere and the time profiles of the resulting high energy radiation, the formation and evolution of Structures in Cosmology as well as the nature of dark matter and dark energy.
A number of young researchers are coming to our Institute and successfully complete their PhD and Masters Theses. During 2010 three PhD and three MSc theses were supervised by RCAAM members and with research conducted in RCAAM have been successfully completed. Three more PhD theses are in progress. The teaching of the course "Nonlinear Dynamics" for Masters' students at the University of Athens is done by members of our Institute.
RCAAM organizes since 1997 on a weekly basis during the whole year a seminar with speakers leading scientists from Greece and abroad. The talks are attended by many researchers, university professors and young scientists. RCAAM has organized in 2007 an international conference on "Chaos in Astronomy" as a continuation of another conference organized in 2002. The success of this series of conferences is planned to be continued during the next years. Another conference organized with great success by our institute was the conference "Classical and Quantum Gravity", Crete 2009. RCAAM has also organized with great success a series of talks for the broad public in the Academy of Athens during 2009 in the frame of the International Year of Astronomy. Many other talks for the broad public are given every year.
Our annual reports can be found here: