Fuzzy dark matter fails to explain dark matter cores

Bibcode
2025PDU....4902010B
DOI
10.1016/j.dark.2025.102010
Benito, María; Hütsi, Gert; Müürsepp, Kristjan; Sánchez Almeida, Jorge; Urrutia, Juan; Vaskonen, Ville; Veermäe, Hardi
Referencia bibliográfica

Physics of the Dark Universe

Fecha de publicación:
9
2025
Número de autores
7
Número de autores del IAC
1
Número de citas
8
Número de citas referidas
4
Descripción
Ultrafaint dwarf galaxies (UFDs) are ideal for studying dark matter (DM) due to minimal baryonic effects. UFD observations suggest cored DM profiles. We find that the core radius–stellar mass scaling predicted by fuzzy dark matter (FDM) is at 6.1σ tension with UFD observations. Combining observations from 27 UFDs, the required FDM mass ma=3.2‑0.6+0.8×10‑21eV is also in conflict with existing Lyman-α bounds. Our results suggest that FDM cannot provide a consistent explanation for DM cores and imply ma>2.2×10‑21eV at to 2σ CL.
Proyectos relacionados
Una vista de nuestra galaxia, la Vía Láctea, con sus vecinos cercanos, las Nubes de Magallanes
Evolución Galáctica en el Grupo Local
La formación y evolución de galaxias es un problema fundamental en Astrofísica. Su estudio requiere “viajar atrás en el tiempo”, para lo cual hay dos enfoques complementarios. El mas extendido consiste en analizar las propiedades de las galaxias a diferentes distancias cosmológicas. Nuestro equipo se concentra en el otro enfoque, denominado
Emma
Fernández Alvar
En ejecución
Tipo
Con árbitro
La Vía Láctea y el Grupo Local (MWLG)
Materia oscura

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