Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Eke, Vincent"'
Autor:
Sandnes, Thomas D., Eke, Vincent R., Kegerreis, Jacob A., Massey, Richard J., Ruiz-Bonilla, Sergio, Schaller, Matthieu, Teodoro, Luis F. A.
We present REMIX, a smoothed particle hydrodynamics (SPH) scheme designed to alleviate effects that typically suppress mixing and instability growth at density discontinuities in SPH simulations. We approach this problem by directly targeting sources
Externí odkaz:
http://arxiv.org/abs/2407.18587
Autor:
Kegerreis, Jacob A., Lissauer, Jack J., Eke, Vincent R., Sandnes, Thomas D., Elphic, Richard C.
The origin of Phobos and Deimos remains unknown. They are typically thought either to be captured asteroids or to have accreted from a debris disk produced by a giant impact. Here, we present an alternative scenario wherein fragments of a tidally dis
Externí odkaz:
http://arxiv.org/abs/2407.15936
Autor:
Teodoro, Luís F. A., Kegerreis, Jacob A., Estrada, Paul R., Ćuk, Matija, Eke, Vincent R., Cuzzi, Jeffrey N., Massey, Richard J., Sandnes, Thomas D.
Publikováno v:
ApJ, 955, 2, 137 (2023)
We simulate the collision of precursor icy moons analogous to Dione and Rhea as a possible origin for Saturn's remarkably young rings. Such an event could have been triggered a few hundred million years ago by resonant instabilities in a previous sat
Externí odkaz:
http://arxiv.org/abs/2309.15156
Autor:
Kegerreis, Jacob A., Ruiz-Bonilla, Sergio, Eke, Vincent R., Massey, Richard J., Sandnes, Thomas D., Teodoro, Luís F. A.
Publikováno v:
ApJL 937 L40 (2022)
The Moon is traditionally thought to have coalesced from the debris ejected by a giant impact onto the early Earth. However, such models struggle to explain the similar isotopic compositions of Earth and lunar rocks at the same time as the system's a
Externí odkaz:
http://arxiv.org/abs/2210.01814
Autor:
Ruiz-Bonilla, Sergio, Borrow, Josh, Eke, Vincent R., Kegerreis, Jacob A., Massey, Richard J., Sandnes, Thomas D., Teodoro, Luis F. A.
Density discontinuities cannot be precisely modelled in standard formulations of smoothed particles hydrodynamics (SPH) because the density field is defined smoothly as a kernel-weighted sum of neighbouring particle masses. This is a problem when per
Externí odkaz:
http://arxiv.org/abs/2202.00472
Autor:
Wilson, Jack T., Lawrence, David J., Peplowski, Patrick N., Eke, Vincent R., Kegerreis, Jacob A.
We use data from the Lunar Prospector Neutron Spectrometer to make the second space-based measurement of the free neutron lifetime finding $\tau_n=887 \pm 14_\text{stat}{\:^{+7}_{-3\:\text{syst}}}$ s, which is within 1$\sigma$ of the accepted value.
Externí odkaz:
http://arxiv.org/abs/2011.07061
Recent claims of observational evidence for self-interacting dark matter (SIDM) have relied on a semi-analytic method for predicting the density profiles of galaxies and galaxy clusters containing SIDM. We present a thorough description of this metho
Externí odkaz:
http://arxiv.org/abs/2009.07844
Autor:
Kegerreis, Jacob A., Eke, Vincent R., Catling, David C., Massey, Richard J., Teodoro, Luis F. A., Zahnle, Kevin J.
We present a new scaling law to predict the loss of atmosphere from planetary collisions for any speed, angle, impactor mass, target mass, and body compositions, in the regime of giant impacts onto broadly terrestrial planets with relatively thin atm
Externí odkaz:
http://arxiv.org/abs/2007.04321
Autor:
Ruiz-Bonilla, Sergio, Eke, Vincent R., Kegerreis, Jacob A., Massey, Richard J., Teodoro, Luis F. A.
We simulate the hypothesised collision between the proto-Earth and a Mars-sized impactor that created the Moon. Amongst the resulting debris disk in some impacts, we find a self-gravitating clump of material. It is roughly the mass of the Moon, conta
Externí odkaz:
http://arxiv.org/abs/2007.02965
Autor:
Wilson, Jack T., Lawrence, David J., Peplowski, Patrick N., Eke, Vincent R., Kegerreis, Jacob A.
Publikováno v:
Phys. Rev. Research 2, 023316 (2020)
We establish the feasibility of measuring the neutron lifetime via an alternative, space-based class of methods, which use neutrons generated by galactic cosmic ray spallation of planets' surfaces and atmospheres. Free neutrons decay via the weak int
Externí odkaz:
http://arxiv.org/abs/2006.10008