669 citations
- Houston Advanced Research CenterUS24 papers
- Texas A&M UniversityUS22 papers
- Mitchell InstituteUS18 papers
- National and Kapodistrian University of AthensGR12 papers
- Chinese Academy of SciencesCN11 papers
- Institute of Theoretical PhysicsCN11 papers
- King's College LondonGB7 papers
- Institute of Nuclear and Particle PhysicsGR6 papers
- National Institute of Astrophysics, Optics and ElectronicsMX6 papers
- National Observatory of AthensGR6 papers
- Rutgers, The State University of New JerseyUS4 papers
- University of LethbridgeCA4 papers
17 papers · 1 filter
Invariant manifolds and the response of spiral arms in barred galaxies
P. Tsoutsis, C. Kalapotharakos, C. Efthymiopoulos +1
The unstable invariant manifolds of the short-period family of periodic orbits around the unstable Lagrangian points and of a barred galaxy define loci in the configura…
Three-dimensional numerical simulations of the pulsar magentoshere: Preliminary results
Constantinos Kalapotharakos, Ioannis Contopoulos
We investigate the three-dimensional structure of the pulsar magnetosphere through time-dependent numerical simulations of a magnetic dipole that is set in rotation. We developed o…
Particle interactions with single or multiple 3D solar reconnecting current sheets
A. Anastasiadis, C. Gontikakis, C. Efthymiopoulos
The acceleration of charged particles (electrons and protons) in flaring solar active regions is analyzed by numerical experiments. The acceleration is modelled as a stochastic pro…
The rate of secular evolution in elliptical galaxies with central masses
Constantinos Kalapotharakos
We study a series of body simulations representing elliptical galaxies with central masses. Starting from two different systems with smooth centres, which have initially a tria…
The coalescence of invariant manifolds and the spiral structure of barred galaxies
P. Tsoutsis, C. Efthymiopoulos, N. Voglis
In a previous paper (Voglis et al. 2006a, paper I) we demonstrated that, in a rotating galaxy with a strong bar, the unstable asymptotic manifolds of the short period family of uns…
The Aspen--Amsterdam Void Finder Comparison Project
Joerg M. Colberg, Frazer Pearce, Caroline Foster +16
Despite a history that dates back at least a quarter of a century studies of voids in the large--scale structure of the Universe are bedevilled by a major problem: there exist a la…