Galaxy cluster counts from eRASS1 plus weak lensing data set the tightest existing upper bounds on ultralight axion relic density Ω_a around 10^{-27} eV (Ω_a < 0.0035) and 10^{-26} eV (Ω_a < 0.0079) at 95% CL.
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3 Pith papers cite this work. Polarity classification is still indexing.
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Stacking analysis of eROSITA observations detects statistically significant X-ray signal from hot gas out to 2 r_200m with a transition at the halo boundary, showing higher gas spread than in IllustrisTNG simulations.
FRIIs show lower cluster association rates than FRIs (30.6% vs 48.6% volume-limited; 32.6% vs 45.6% paired), with the gap widening at high luminosity, yet similar environments once inside clusters.
citing papers explorer
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The SRG/eROSITA all-sky survey: Constraints on Ultra-light Axion Dark Matter through Galaxy Cluster Number Counts
Galaxy cluster counts from eRASS1 plus weak lensing data set the tightest existing upper bounds on ultralight axion relic density Ω_a around 10^{-27} eV (Ω_a < 0.0035) and 10^{-26} eV (Ω_a < 0.0079) at 95% CL.
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The SRG/eROSITA All-Sky Survey. Detection of shock-heated gas beyond the halo boundary into the accretion region
Stacking analysis of eROSITA observations detects statistically significant X-ray signal from hot gas out to 2 r_200m with a transition at the halo boundary, showing higher gas spread than in IllustrisTNG simulations.
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Probing the environments of FRI and FRII radio galaxies in LoTSS DR2 with galaxy clusters
FRIIs show lower cluster association rates than FRIs (30.6% vs 48.6% volume-limited; 32.6% vs 45.6% paired), with the gap widening at high luminosity, yet similar environments once inside clusters.