98 citations · 179 across the 13 of their papers we have counts for
13 papers
A solution to the paradox of youth in the Galactic centre
Rodrigo P. Silva, Alexandre C. M. Correia, Tjarda C. N. Boekholt +1
The supermassive black hole at the Galactic centre, Sgr A*, is surrounded by an S cluster of young stars. These stars are predominantly B-type stars, but their origin remains uncer…
Tertiary Tides with Eccentric Orbits
Yan Gao, Tjarda Boekholt, Devismita Panda +2
Within hierarchical triple stellar systems, there exists a tidal process unique to them, known as tertiary tides. In this process, the tidal deformation of a tertiary in a hierarch…
Isles of regularity in a sea of chaos amid the gravitational three-body problem
Alessandro Alberto Trani, Nathan W. C. Leigh, Tjarda C. N. Boekholt +1
The three-body problem (3BP) poses a longstanding challenge in physics and celestial mechanics. Despite the impossibility of obtaining general analytical solutions, statistical the…
Individual chaotic behaviour of the S-stars in the Galactic centre
Sam J. Beckers, Colin M. Poppelaars, Veronica S. Ulibarrena +2
Located at the core of the Galactic Centre, the S-star cluster serves as a remarkable illustration of chaos in dynamical systems. The long-term chaotic behaviour of this system can…
Gargantuan chaotic gravitational three-body systems II. Dependence on angular momentum and astrophysical scale
Tjarda C. N. Boekholt, Simon F. Portegies Zwart
Recently we estimated that about 5 percent of supermassive black hole triple systems are fundamentally unpredictable. These gargantuan chaotic systems are able to exponentially mag…
Punctuated chaos and the unpredictability of the Galactic center S-star orbital evolution
Simon Portegies Zwart, Tjarda Boekholt, Douglas Heggie
We investigate the chaotic behavior of the S-star cluster in the Galactic center using precise -body calculations, free from round-off or discretization errors. Our findings rev…
The paradox of infinitesimal granularity: Chaos and the reversibility of time in Newton's theory of gravity
Simon Portegies Zwart, Tjarda Boekholt
The fundamental laws of physics are time-symmetric, but our macroscopic experience contradicts this. The time reversibility paradox is partly a consequence of the unpredictability…
Radio astronomy and Space science in Azores: enhancing the Atlantic VLBI infrastructure cluster
Domingos Barbosa, Bruno Coelho, Sonia Antón +10
Radio astronomy and Space Infrastructures in the Azores have a great scientific and industrial interest because they benefit from a unique geographical location in the middle of th…
Gargantuan chaotic gravitational three-body systems and their irreversibility to the Planck length
Tjarda Boekholt, Simon Portegies Zwart, Mauri Valtonen
Chaos is present in most stellar dynamical systems and manifests itself through the exponential growth of small perturbations. Exponential divergence drives time irreversibility an…
Newton vs the machine: solving the chaotic three-body problem using deep neural networks
Philip G. Breen, Christopher N. Foley, Tjarda Boekholt +1
Since its formulation by Sir Isaac Newton, the problem of solving the equations of motion for three bodies under their own gravitational force has remained practically unsolved. Cu…
Towards completing Planetary Systems: The role of minor bodies on life growth and survival
Jorge Lillo-Box, David Kipping, Isabel Rebollido +8
The search for extrasolar planets in the past decades has shown that planets abound in the Solar neighborhood. While we are still missing an Earth twin, the forthcoming space missi…
Numerical verification of the microscopic time reversibility of Newton's equations of motion: Fighting exponential divergence
Simon Portegies Zwart, Tjarda Boekholt
Numerical solutions to Newton's equations of motion for chaotic self gravitating systems of more than 2 bodies are often regarded to be irreversible. This is due to the exponential…
On the Reliability of N-body Simulations
Tjarda Boekholt, Simon Portegies Zwart
The general consensus in the N-body community is that statistical results of an ensemble of collisional N-body simulations are accurate, even though individual simulations are not.…