Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Joachim Stadel"'
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 38 (2023)
In the leading theory of lunar formation, known as the giant impact hypothesis, a collision between two planet-size objects resulted in a young Earth surrounded by a circumplanetary debris disk from which the Moon later accreted. The range of giant i
Externí odkaz:
https://doaj.org/article/c2ac64d1d99e4f668bab3e46f369bbaa
Autor:
Michael Boylan-Kolchin, James S. Bullock, Robert Feldmann, M. Bernardini, Joachim Stadel, Daniel Anglés-Alcázar, Lucio Mayer
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 509:1323-1341
Hydrodynamic simulations provide a powerful, but computationally expensive, approach to study the interplay of dark matter and baryons in cosmological structure formation. Here we introduce the EMulating Baryonic EnRichment (EMBER) Deep Learning fram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d8c025b3c78e668ce645cd78ac5a490
https://doi.org/10.1093/mnras/stab3088
https://doi.org/10.1093/mnras/stab3088
We extend the state-of-the-art N-body code PKDGRAV3 with the inclusion of mesh-free gas hydrodynamics for cosmological simulations. Two new hydrodynamic solvers have been implemented, the mesh-less finite volume and mesh-less finite mass methods. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63099f0fa6aeeef3c5faef8837b66147
http://arxiv.org/abs/2211.12243
http://arxiv.org/abs/2211.12243
We implement EuclidEmulator (version 1), an emulator for the non-linear correction of the matter power spectrum, into the MCMC forecasting code MontePython. We compare the performance of Halofit, HMCode, and EuclidEmulator1, both at the level of powe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46c99480a9f86a583a3076b78b4cecd2
https://doi.org/10.5167/uzh-223255
https://doi.org/10.5167/uzh-223255
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 502:1647-1660
The origin of Uranus and Neptune remains a challenge for planet formation models. A potential explanation is that the planets formed from a population of a few planetary embryos with masses of a few Earth masses which formed beyond Saturn's orbit and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bfc8c2e36d5feca1fff91420cb42413f
https://doi.org/10.1093/mnras/staa4021
https://doi.org/10.1093/mnras/staa4021
Recent improvements to GPU hardware and the symplectic N-body code GENGA allow for unprecedented resolution in simulations of planet formation. In this paper, we report results from high-resolution N-body simulations of terrestrial planet formation t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7b3d3376e034a1fc901a6e866230ee9
http://arxiv.org/abs/2109.03650
http://arxiv.org/abs/2109.03650
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 492:5336-5353
Despite many similarities, there are significant observed differences between Uranus and Neptune: while Uranus is tilted and has a regular set of satellites, suggesting their accretion from a disk, Neptune's moons are irregular and are captured objec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2f3a618232bd0f50ef9fb80d5b4feef
https://doi.org/10.1093/mnras/stz3271
https://doi.org/10.1093/mnras/stz3271
Autor:
Jason Man Yin Woo, Christian Reinhardt, Marco Cilibrasi, Alice Chau, Ravit Helled, Joachim Stadel
Publikováno v:
Icarus, 375
The formation of Uranus' regular moons has been suggested to be linked to the origin of its enormous spin axial tilt (~98o). A giant impact between proto-Uranus and a 2–3 MEarth impactor could lead to a large tilt and to the formation of an impact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6244860e70b2b4ab82fef9dd87808079
http://arxiv.org/abs/2105.13663
http://arxiv.org/abs/2105.13663
Despite evidence for the existence of dark matter (DM) from very high and low redshifts, a moderate amount of DM particle decay remains a valid possibility. This includes both models with very long-lived yet unstable particles or mixed scenarios wher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d02dde742441b01febe8c7073307a9d2
http://arxiv.org/abs/2104.07675
http://arxiv.org/abs/2104.07675
Recent high precision meteoritic data improve constraints on the formation timescale and bulk composition of the terrestrial planets. High resolution N-body simulations allow direct comparison of embryo growth timescale and accretion zones to these c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddeb5c2a2219366a6445982f99c04ebc
http://arxiv.org/abs/2101.09035
http://arxiv.org/abs/2101.09035