This study explores the impact of observational and modelling systematic effects on cluster number counts and cluster clustering and provides model prescriptions for their joint analysis in the context of the Euclid survey. Using 1000 Euclid-like cluster catalogues, we investigated the effect of systematic uncertainties on cluster summary

The Euclid mission of the European Space Agency seeks to understand the Universe's expansion history and the nature of dark energy, through measurements of cosmic shear. This requires a very accurate estimate of the true redshift distribution of the galaxies, with the systematic error in the mean redshift satisfying σ ⟨z⟩ < 0.002(1 + z) per

We present an example cluster follow-up study with Euclid. Our target, a z ∼ 1.74 candidate cluster nicknamed the 'Puddle', was initially discovered by the Massive and Distant Clusters of WISE Survey 2 as a z phot ∼ 1.65 candidate cluster. It was also detected independently as a z phot ∼ 1.5 candidate with the two cluster-finding algorithms in

We present the analysis of solar-like oscillations for 138 metal-poor red giants observed by Kepler. We extracted individual oscillation modes and used them to characterize stars via a detailed modeling approach. Our analysis shows that the mass and age estimates do not strongly depend on input metallicity and the mixing length parameters

We investigate the clustering and halo occupation distribution (HOD) of DESI Y1 emission-line (ELGs) and luminous red (LRGs) galaxies at 0.8 < z < 1.1, including their cross-correlation (ELG×LRG), using the ABACUSSUMMIT suite and a new Halo Occupation Model (HOMe) for galaxy multitracers. This integrates intrahalo dynamics, halo exclusion, and

EP J171159.4−333253 is a new neutron star low-mass X-ray binary discovered in outburst by the Einstein Probe (EP) on 2025 June 23, exhibiting clocked type I X-ray bursts, eclipses, and dips. In this paper, we report on the results of the X-ray spectral and timing analyses for EP J171159.4−333253 using data collected by EP and NuSTAR during the