Zobrazeno 1 - 10
of 22 973
pro vyhledávání: '"dark matter: halo"'
Autor:
Vogl, Stefan, Xu, Xun-Jie
Supernova explosions are among the most extreme events in the Universe, making them a promising environment in which to search for the effects of light, weakly coupled new particles. As significant sources of energy, they are known to have an importa
Externí odkaz:
http://arxiv.org/abs/2411.18052
In this paper, we evaluate the potential of multiband gravitational wave observations to constrain the properties of static dark matter spikes around intermediate-mass ratio inspirals. The influence of dark matter on the orbital evolution of the comp
Externí odkaz:
http://arxiv.org/abs/2411.14063
Galaxies grow and evolve in dark matter halos. Because dark matter is not visible, galaxies' halo masses ($\rm{M}_{\rm{halo}}$) must be inferred indirectly. We present a graph neural network (GNN) model for predicting $\rm{M}_{\rm{halo}}$ from stella
Externí odkaz:
http://arxiv.org/abs/2411.12629
Xu & Jing (2022) reported a monotonic relationship between host halo mass $M_h$ and the morphology of massive central galaxies, characterized by the S\'ersic index $n$, at fixed stellar mass, suggesting that morphology could serve as a good secondary
Externí odkaz:
http://arxiv.org/abs/2411.07525
In this paper, we derive a novel Schwarzschild-like black hole (BH) solution describing a static and asymptotically flat BH surrounded by a dark matter (DM) halo with a Dehnen-type density distribution in the surrounding environment. We investigate t
Externí odkaz:
http://arxiv.org/abs/2411.01145
Autor:
R., Soorya Narayan, Adhikari, Susmita
We use a dimension reduction algorithm, Uniform Manifold Approximation and Projection (UMAP), to study dynamical structures inside a dark matter halo. We use a zoom-in simulation of a Milky Way mass dark matter halo, and apply UMAP on the 6 dimension
Externí odkaz:
http://arxiv.org/abs/2408.01220
Autor:
Woudenberg, Hanneke C., Helmi, Amina
Publikováno v:
A&A 691, A277 (2024)
Stellar streams are particularly sensitive probes of the mass distribution of galaxies. In this work, we focus on the Helmi Streams, the remnants of an accreted dwarf galaxy orbiting the inner Milky Way. We examine in depth their peculiar dynamical p
Externí odkaz:
http://arxiv.org/abs/2407.21790
Autor:
Aditya, K.
The discovery of NGC 1052-DF2 and subsequent modeling have shown that NGC 1052-DF2 is deficient in dark matter and is in conflict with the standard stellar-to-halo mass ratio. In this work, we aim to resolve the degeneracy between the dynamical model
Externí odkaz:
http://arxiv.org/abs/2407.07770
The merger of binary black holes produces a series of decaying oscillations, during which energy is radiated in gravitational waves. The characteristic signal in the ringdown phase can be described by complex oscillation frequencies called quasinorma
Externí odkaz:
http://arxiv.org/abs/2409.20333
Autor:
Velmani, Premvijay, Paranjape, Aseem
We study the change in the radial distribution of dark matter within haloes in response to baryonic astrophysical processes in galaxies at different epochs, investigating the role of astrophysical modeling in cosmological hydrodynamic simulations in
Externí odkaz:
http://arxiv.org/abs/2408.04864