Scientific Reports journal publishes the work by UA researcher Juan F. Navarro, member of Space Geodesy and Space Dynamics group.
The article discusses how a star can leave a galaxy's potential well and allows space navigation methods to be developed using a fuel-less gravitational field.
Alicante, Thursday 10 October 2019
The article by Department of Applied Mathematics lecturer Juan F. Navarro is about how a star with enough energy can leave the potential well of a galaxy with axial symmetry. The work, published by the UA researcher, presents a degree of detail that had not been achieved to date and arouses great interest among the scientific community.
This study opens up new fields of research and allows us to know a little better the mechanics of the universe and the movements of celestial bodies. In this sense, Navarro highlights its application to space navigation and specifically using the gravitational field, which allows the device to navigate without the need for fuel.
The work focuses on a simplified model of a galaxy with two escape openings. This two-window model allows analysis of how the structures associated with the two openings interact and interrelate.
Navarro is a member of the research group Space Geodesy and Space Dynamics and his work has been published by the prestigious journal Scientific Reports of Nature “On the escape from potentials with two exit channels”. The UA researcher explains that the escape of a galactic potential is regulated by unstable periodic orbits, known as Lyapunov's orbits, which are located at the openings of the potential well. In particular, the escape depends on the relationship of the star's initial conditions to geometric structures associated with Lyapunov's orbits, known as stable and unstable varieties of the orbit.
The article, published by the journal Nature, determines these structures with great precision, as well as their successive intersections with a Poincaré surface that let us understand the geometry of the problem. The article presents and analyses these structures with a degree of detail that had not been carried out so far.
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