Zobrazeno 1 - 10
of 11 047
pro vyhledávání: '"dark matter: density"'
Autor:
Staudt, Patrick G., Bullock, James S., Boylan-Kolchin, Michael, Kirkby, David, Wetzel, Andrew, Ou, Xiaowei
Publikováno v:
JCAP 08 (2024) 022
We use FIRE-2 zoom simulations of Milky Way size disk galaxies to derive easy-to-use relationships between the observed circular speed of the Galaxy at the Solar location, $v_\mathrm{c}$, and dark matter properties of relevance for direct detection e
Externí odkaz:
http://arxiv.org/abs/2403.04122
Autor:
Chan, Man Ho, Lee, Chak Man
Publikováno v:
ApJL 962, L40 (2024)
Black hole dynamics suggests that dark matter would re-distribute near a supermassive black hole to form a density spike. However, no direct evidence of dark matter density spike around a supermassive black hole has been identified. In this letter, w
Externí odkaz:
http://arxiv.org/abs/2402.03751
Autor:
Muni, Claudia, Pontzen, Andrew, Sanders, Jason L., Rey, Martin P., Read, Justin I., Agertz, Oscar
We introduce a new method to calculate dark matter halo density profiles from simulations. Each particle is 'smeared' over its orbit to obtain a dynamical profile that is averaged over a dynamical time, in contrast to the traditional approach of binn
Externí odkaz:
http://arxiv.org/abs/2310.00044
Dark matter direct (and indirect) detection experiments usually can only determine a specific combination of a power of the coupling and the dark matter density. This is also true for axion haloscopes which are sensitive to the product $g^{2}_{a\gamm
Externí odkaz:
http://arxiv.org/abs/2307.11871
In this paper, we investigate a potential departure in the standard dark matter density evolution law, $\rho_{dm} = \rho_{dm,0}(1+z)^3$. The method involves considering a deformed evolution model, denoted as $\rho_{dm} = \rho_{dm,0}(1+z)^3f(z)$, and
Externí odkaz:
http://arxiv.org/abs/2308.05165
Autor:
Ghoshal, Anish, Strumia, Alessandro
Supermassive black hole binaries source gravitational waves measured by Pulsar Timing Arrays. The frequency spectrum of this stochastic background is predicted more precisely than its amplitude. We argue that Dark Matter friction can suppress the spe
Externí odkaz:
http://arxiv.org/abs/2306.17158
Autor:
Zuriaga-Puig, Jaume, Gammaldi, Viviana, Gaggero, Daniele, Lacroix, Thomas, Sánchez-Conde, Miguel Ángel
Publikováno v:
JCAP11(2023)063
We develop a comprehensive study of the gamma-ray flux observed by H.E.S.S. in 5 regions of the Galactic Center (GC). Motivated by previous works on a possible Dark Matter (DM) explanation for the TeV cut-off observed in the innermost $\sim 16$ pc of
Externí odkaz:
http://arxiv.org/abs/2307.06823
Autor:
Biviano, A., Pizzuti, L., Mercurio, A., Sartoris, B., Rosati, P., Ettori, S., Girardi, M., Grillo, C., Caminha, G. B., Nonino, M.
The inner slope (gammadm) of the dark matter (DM) density profile of cosmological halos carries information about the properties of DM and/or baryonic processes affecting the halo gravitational potential. Cold DM cosmological simulations predict stee
Externí odkaz:
http://arxiv.org/abs/2307.06804
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