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XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass

Abstract : Scaling relations trace the formation and evolution of galaxy clusters. We exploited multi-wavelength surveys – the XXL survey at XMM-Newton in the X-ray band, and the Hyper Suprime-Cam Subaru Strategic Program for optical weak lensing – to study an X-ray selected, complete sample of clusters and groups. The scalings of gas mass, temperature, and soft-band X-ray luminosity with the weak lensing mass show imprints of radiative cooling and active galactic nucleus feedback in groups. From the multi-variate analysis, we found some evidence for steeper than self-similar slopes for gas mass (⁠|$\beta _{m_\text{g}|m}=1.73 \pm 0.80$|⁠) and luminosity (βl|m = 1.91 ± 0.94) and a nearly self-similar slope for the temperature (βt|m = 0.78 ± 0.43). Intrinsic scatters of X-ray properties appear to be positively correlated at a fixed mass (median correlation factor |$\rho _{X_1X_2|m}\sim 0.34$|⁠) due to dynamical state and merger history of the haloes. Positive correlations with the weak lensing mass (median correlation factor |$\rho _{m_\text{wl}X|m}\sim 0.35$|⁠) can be connected to triaxiality and orientation. Comparison of weak lensing and hydrostatic masses suggests a small role played by non-thermal pressure support (⁠|$9\pm 17{{\ \rm per\ cent}}$|⁠).
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Submitted on : Tuesday, June 21, 2022 - 3:28:30 PM
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Mauro Sereno, Keiichi Umetsu, Stefano Ettori, Dominique Eckert, Fabio Gastaldello, et al.. XXL Survey groups and clusters in the Hyper Suprime-Cam Survey. Scaling relations between X-ray properties and weak lensing mass. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2020, 492 (3), pp.4528-4545. ⟨10.1093/mnras/stz3425⟩. ⟨hal-02467262⟩

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