Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Musoke, Nathan"'
Autor:
Mirasola, Anthony E., Musoke, Nathan, Neyrinck, Mark C., Prescod-Weinstein, Chanda, Zagorac, J. Luna
It is generally assumed that scalar field dark matter halos would contain solitonic cores -- spherically symmetric ground state configurations -- at their centers. This is especially interesting in the case of ultralight dark matter (ULDM), where the
Externí odkaz:
http://arxiv.org/abs/2410.02663
Autor:
Musoke, Nathan
Publikováno v:
Journal of Open Source Software, 9(96), 6035
UltraDark.jl is a Julia package for the simulation of cosmological scalar fields. Scalar fields are proposed solutions to two of the fundamental questions in cosmology: the nature of dark matter and the universe's initial conditions. Modeling their d
Externí odkaz:
http://arxiv.org/abs/2405.04593
Autor:
Glennon, Noah, Musoke, Nathan, Nadler, Ethan O., Prescod-Weinstein, Chanda, Wechsler, Risa H.
Publikováno v:
Phys.Rev.D 109 (2024) 6, 063501
We explore how dynamical friction in an ultralight dark matter (ULDM) background is affected by dark matter self-interactions. We calculate the force of dynamical friction on a point mass moving through a uniform ULDM background with self-interaction
Externí odkaz:
http://arxiv.org/abs/2312.07684
Autor:
Musoke, Nathan, Kendall, Emily, Gosenca, Mateja, Guo, Lillian, Low, Lerh Feng, Xue, Angela, Easther, Richard
In this Working Paper we analyse computational strategies for using aggregated spatio-temporal population data acquired from telecommunications networks to infer travel and movement patterns between geographical regions. Specifically, we focus on hou
Externí odkaz:
http://arxiv.org/abs/2303.17758
Publikováno v:
Phys. Rev. D 107, 063520, 2023
As constraints on ultralight axion-like particles (ALPs) tighten, models with multiple species of ultralight ALP are of increasing interest. We perform simulations of two-ALP models with particles in the currently supported range [arXiv:1307.1705] of
Externí odkaz:
http://arxiv.org/abs/2302.04302
Autor:
Glennon, Noah, Mirasola, Anthony E., Musoke, Nathan, Neyrinck, Mark C., Prescod-Weinstein, Chanda
Publikováno v:
JCAP07(2023)004
Galaxies and their dark-matter halos are commonly presupposed to spin. But it is an open question how this spin manifests in halos and soliton cores made of scalar dark matter (SDM, including fuzzy/wave/ultralight-axion dark matter). One way spin cou
Externí odkaz:
http://arxiv.org/abs/2301.13220
Autor:
Glennon, Noah, Nadler, Ethan O., Musoke, Nathan, Banerjee, Arka, Prescod-Weinstein, Chanda, Wechsler, Risa H.
Ultralight axions (ULAs) are promising dark matter candidates that can have a distinct impact on the formation and evolution of structure on nonlinear scales relative to the cold, collisionless dark matter (CDM) paradigm. However, most studies of str
Externí odkaz:
http://arxiv.org/abs/2205.10336
Scientific analyses often rely on slow, but accurate forward models for observable data conditioned on known model parameters. While various emulation schemes exist to approximate these slow calculations, these approaches are only safe if the approxi
Externí odkaz:
http://arxiv.org/abs/2004.11929
Publikováno v:
Phys. Rev. Lett. 124, 061301 (2020)
In simple inflationary cosmological scenarios the near-exponential growth can be followed by a long period in which the Universe is dominated by the oscillating inflaton condensate. The condensate is initially almost homogeneous, but perturbations gr
Externí odkaz:
http://arxiv.org/abs/1909.11678
Autor:
Musoke, Nathan, Easther, Richard
We describe the general inflationary dynamics that can arise with a single, canonically coupled field where the inflaton potential is a 4-th order polynomial. This scenario yields a wide range of combinations of the empirical spectral observables, $n
Externí odkaz:
http://arxiv.org/abs/1709.01192