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- Houston Advanced Research CenterUS204 papers
- Texas A&M UniversityUS196 papers
- National and Kapodistrian University of AthensGR107 papers
- Chinese Academy of SciencesCN96 papers
- National Observatory of AthensGR90 papers
- European Organization for Nuclear ResearchCH88 papers
- Institute of Theoretical PhysicsCN78 papers
- King's College LondonGB70 papers
- Mitchell InstituteUS52 papers
- National Institute of Astrophysics, Optics and ElectronicsMX45 papers
- Centre National de la Recherche ScientifiqueFR42 papers
- Aristotle University of ThessalonikiGR38 papers
42 papers · 1 filter
Conservation laws and evolution schemes in geodesic, hydrodynamic and magnetohydrodynamic flows
Charalampos Markakis, Kōji Uryū, Eric Gourgoulhon +4
Carter and Lichnerowicz have established that barotropic fluid flows are conformally geodesic and obey Hamilton's principle. This variational approach can accommodate neutral, or c…
Dynamical models and the onset of chaos in space debris
Alessandra Celletti, Christos Efthymiopoulos, Fabien Gachet +2
The increasing threat raised by space debris led to the development of different mathematical models and approaches to investigate the dynamics of small particles orbiting around t…
Dynamical symmetries in Brans-Dicke cosmology
G. Papagiannopoulos, John D. Barrow, S. Basilakos +2
In the context of generalised Brans-Dicke cosmology we use the Killing tensors of the minisuperspace in order to determine the unspecified potential of a scalar-tensor gravity theo…
The L - σ relation for HII galaxies in green
Jorge Melnick, Eduardo Telles, Vinicius Bordalo +7
The correlation between emission-line luminosity (L) and profile width (sigma) for HII Galaxies provides a powerful method to measure the distances to galaxies over a wide range of…
Geostationary secular dynamics revisited: application to high area-to-mass ratio objects
Fabien Gachet, Alessandra Celletti, Giuseppe Pucacco +1
The long-term dynamics of the geostationary Earth orbits (GEO) is revisited through the application of canonical perturbation theory. We consider a Hamiltonian model accounting for…
Structures induced by companions in galactic discs
P. Kyziropoulos, C. Efthymiopoulos, G. Gravvanis +1
Using N-body simulations we study the structures induced on a galactic disc by repeated flybys of a companion in decaying eccentric orbit around the disc. Our system is composed by…