A Radio U-Net pipeline produces pixel-level segmentation maps and probability scores for diffuse radio emission in 3822 galaxy clusters from LoTSS-DR3, yielding a high-confidence sample of 357 and confirming trends with mass and redshift.
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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.
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.
A z=1.74 cluster has 18% red galaxies and a merging proto-BCG of 5.7e11 solar masses, implying Euclid will find ~400 assembling BCGs.
citing papers explorer
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Galaxy clusters in the LoTSS-DR3: Catalogues and detection pipeline for diffuse radio emission
A Radio U-Net pipeline produces pixel-level segmentation maps and probability scores for diffuse radio emission in 3822 galaxy clusters from LoTSS-DR3, yielding a high-confidence sample of 357 and confirming trends with mass and redshift.
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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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Euclid: A blue galaxy population and a brightest cluster galaxy in the making in a $z\sim1.74$ MaDCoWS2 galaxy cluster candidate
A z=1.74 cluster has 18% red galaxies and a merging proto-BCG of 5.7e11 solar masses, implying Euclid will find ~400 assembling BCGs.