Zobrazeno 1 - 10
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pro vyhledávání: '"Hansen, Steen H."'
The accelerated expansion of the Universe is impressively well described by a cosmological constant. However, the observed value of the cosmological constant is much smaller than expected based on quantum field theories. Recent efforts to achieve con
Externí odkaz:
http://arxiv.org/abs/2406.15390
Autor:
Li, Zhen, Hansen, Steen H.
Understanding the nature of dark matter is among the top priorities of modern physics. However, due to its inertness, detecting and studying it directly in terrestrial experiments is extremely challenging. Numerical N-body simulations currently repre
Externí odkaz:
http://arxiv.org/abs/2312.12304
Autor:
Tracanna, Fabiano, Hansen, Steen H.
The majority of baryons, which account for $15\%$ of the matter in the Universe, will end their lives as carbon and oxygen inside cold black dwarfs. Dark matter (DM) makes up the remaining $85\%$ of the matter in the universe, however, the fate of DM
Externí odkaz:
http://arxiv.org/abs/2308.15903
Autor:
Hansen, Steen H.1 (AUTHOR) steen.hansen@childrens.harvard.edu
Publikováno v:
PLoS ONE. 5/10/2024, Vol. 19 Issue 5, p1-14. 14p.
Autor:
Aaen, Pernille, Kristensen, Kristoffer B., Antony, Arththy, Hansen, Steen H., Cornett, Claus, Pedersen, Stine F., Boedtkjer, Ebbe
Publikováno v:
In BBA - Molecular Basis of Disease October 2024 1870(7)
Autor:
Hansen, Steen H.
The accelerated expansion of the universe has been established through observations of supernovae, the growth of structure, and the cosmic microwave background. The most popular explanation is Einsteins cosmological constant, or dynamic variations he
Externí odkaz:
http://arxiv.org/abs/2108.13919
Autor:
Hansen, Steen H.
The underlying geometri of spacetime algebra allows one to derive a force by contracting the relativistic generalization of angular momentum, M, with the mass-current, mw, where w is a proper 4-vector velocity. By applying this force to a cosmologica
Externí odkaz:
http://arxiv.org/abs/2106.08951
A range of cosmological observations demonstrate an accelerated expansion of the Universe, and the most likely explanation of this phenomenon is a cosmological constant. Given the importance of understanding the underlying physics, it is relevant to
Externí odkaz:
http://arxiv.org/abs/2102.07792
Publikováno v:
In Cell Reports 26 December 2023 42(12)
Autor:
Martizzi, Davide, Vogelsberger, Mark, Torrey, Paul, Pillepich, Annalisa, Hansen, Steen H., Marinacci, Federico, Hernquist, Lars
The connections among galaxies, the dark matter halos where they form and the properties of the large-scale Cosmic Web still need to be completely disentangled. We use the cosmological hydrodynamical simulation TNG100 of the IllustrisTNG suite to qua
Externí odkaz:
http://arxiv.org/abs/1907.04333