Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Sam Hadden"'
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 228 (2024)
Constraining planet-formation models based on the observed exoplanet population requires generating large samples of synthetic planetary systems, which can be computationally prohibitive. A significant bottleneck is simulating the giant-impact phase,
Externí odkaz:
https://doaj.org/article/693510a53c544e0999dae44389e2a731
Autor:
Sam Hadden
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 64 (2024)
We describe a method for calculating action-angle (AA) variables in axisymmetric galactic potentials using Birkhoff normalization, a technique from Hamiltonian perturbation theory. An advantageous feature of this method is that it yields explicit ser
Externí odkaz:
https://doaj.org/article/c6ef4321f2454dedb39aa2fd8b53c4e7
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 53 (2024)
To improve our understanding of orbital instabilities in compact planetary systems, we compare suites of N -body simulations against numerical integrations of simplified dynamical models. We show that, surprisingly, dynamical models that account for
Externí odkaz:
https://doaj.org/article/587425f65a1d429ab673c9ff9f4ab721
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 121 (2024)
Mercury’s orbit can destabilize, generally resulting in a collision with either Venus or the Sun. Chaotic evolution can cause g _1 to decrease to the approximately constant value of g _5 and create a resonance. Previous work has approximated the va
Externí odkaz:
https://doaj.org/article/18ead3dc2ed0455c9d44d6c4f5a0f412
Autor:
Dorian S. Abbot, David M. Hernandez, Sam Hadden, Robert J. Webber, Georgios P. Afentakis, Jonathan Weare
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 2, p 115 (2023)
Externí odkaz:
https://doaj.org/article/473f5b0c62ba47fd89abccb901a9d6c9
Autor:
Tiger Lu, Hanno Rein, Daniel Tamayo, Sam Hadden, Rosemary Mardling, Sarah C. Millholland, Gregory Laughlin
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 1, p 41 (2023)
We introduce self-consistent spin, tidal, and dynamical equations of motion into REBOUNDx , a library of additional effects for the popular N -body integrator REBOUND . The equations of motion used are derived from the constant time lag approximation
Externí odkaz:
https://doaj.org/article/9cecbb4533814806ba8c670dc4a60668
Autor:
Dorian S. Abbot, David M. Hernandez, Sam Hadden, Robert J. Webber, Georgios P. Afentakis, Jonathan Weare
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 190 (2023)
The long-term stability of the solar system is an issue of significant scientific and philosophical interest. The mechanism leading to instability is Mercury’s eccentricity being pumped up so high that Mercury either collides with Venus or is scatt
Externí odkaz:
https://doaj.org/article/148066b7cb154fbdae7d710991dd654d
Autor:
Dorian S. Abbot, David M. Hernandez, Sam Hadden, Robert J. Webber, Georgios P. Afentakis, Jonathan Weare
The long-term stability of the Solar System is an issue of significant scientific and philosophical interest. The mechanism leading to instability is Mercury's eccentricity being pumped up so high that Mercury either collides with Venus or is scatter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff9fb655d91452075e137a72e7cc3199
http://arxiv.org/abs/2212.14844
http://arxiv.org/abs/2212.14844
The process of migration into resonance capture has been well studied for planetary systems where the gravitational potential is generated exclusively by the star and planets. However, massive protoplanetary disks add a significant perturbation to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63768a69f7cdc79921f74e8f9e6976db
http://arxiv.org/abs/2204.12042
http://arxiv.org/abs/2204.12042
Numerical integrations of the Solar System have been carried out for decades. Their results have been used, for example, to determine whether the Solar System is chaotic, whether Mercury's orbit is stable, or to help discern Earth's climate history.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed88444ba8fab9a7b4287435d9a3c629
http://arxiv.org/abs/2111.08835
http://arxiv.org/abs/2111.08835