activity
20232026
most citedReconsidering the dynamical states of galaxy clusters using PCA and UMAP

15 citations · 37 across the 9 of their papers we have counts for

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Showing astro-ph.COShow all

6 papers · 1 filter

astro-ph.CO2026

Imprints of Mass Accretion History on Galaxy Cluster Morphology

Kabelo Tsiane, Camille Avestruz, Elena Rasia +6

Variations in dynamical states of galaxy clusters can introduce biases and scatter in observable-mass relations. The dynamical state of a cluster is an emergent feature of its mass…

astro-ph.CO2026

Tracing the dynamical states and mass accretion histories of galaxy clusters in IllustrisTNG

Rashaad Reid, Syeda Lammim Ahad, Roan Haggar +2

As the largest and most recently formed stage of hierarchical structure, present-day galaxy clusters are predicted to have a broad range of late-time assembly histories. This diver…

astro-ph.CO2025★ 5 cited

Cosmology from UNIONS weak lensing profiles of galaxy clusters

Charlie T. Mpetha, James E. Taylor, Yuba Amoura +12

Cosmological information is encoded in the structure of galaxy clusters. In Universes with less matter and larger initial density perturbations, clusters form earlier and have more…

astro-ph.CO2024★ 7 cited

The infall region as a complementary probe to cluster abundance

Charlie T. Mpetha, James E. Taylor, Yuba Amoura +1

Galaxy cluster abundance measurements provide a classic test of cosmology. They are most sensitive to the evolved amplitude of fluctuations, usually expressed as $S_8 = σ_8\sqrt{Ω_…

astro-ph.CO2024

Constraining cosmological parameters using the splashback radius of galaxy clusters

Roan Haggar, Yuba Amoura, Charlie T. Mpetha +3

Cosmological parameters such as and can be measured indirectly using various methods, including galaxy cluster abundance and cosmic shear. These measurements c…

astro-ph.CO2023★ 7 cited

Halo Growth and Merger Rates as a Cosmological Test

Yuba Amoura, Nicole E. Drakos, Anael Berrouet +1

Dark matter haloes grow at a rate that depends on the value of the cosmological parameters and through the initial power spectrum and the linear growth factor. Wh…