English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a consistent analysis of Chandra and XMM-Newton observations of anapproximately mass-selected sample of 50 galaxy clusters at $0.15<z<0.3$ -- the"LoCuSS High-$L_X$ Sample". We apply the same analysis methods to data fromboth satellites, including newly developed analytic background models thatpredict the spatial variation of the Chandra and XMM-Newton backgrounds to$<2\%$ and $<5\%$ precision respectively. To verify the cross-calibration ofChandra and XMM-Newton-based cluster mass measurements, we derive the massprofiles of the 21 clusters that have been observed with both satellites,extracting surface brightness and temperature profiles from identical regionsof the respective datasets. We obtain consistent results for the gas and totalhydrostatic cluster masses: the average ratio of Chandra- to XMM-Newton-basedmeasurements of $M_{\rm gas}$ and $M_X$ at $r_{500}$ are $0.99\pm0.02$ and$1.02\pm0.05$, respectively with an intrinsic scatter of $\sim3\%$ for gasmasses and $\sim8\%$ for hydrostatic masses. Comparison of our hydrostatic massmeasurements at $r_{500}$ with the latest LoCuSS weak-lensing results indicatethat the data are consistent with non-thermal pressure support at this radiusof $\sim7\%$. We also investigate the scaling relation between our hydrostaticcluster masses and published integrated Compton parameter $Y_{sph}$measurements from the Sunyaev-Zel'dovich Array. We measure a scatter in mass atfixed $Y_{sph}$ of $\sim16\%$ at $\Delta=500$, which is consistent withtheoretical predictions of $\sim10-15\%$ scatter.

LoCuSS: Hydrostatic Mass Measurements of the High-$L_X$ Cluster Sample -- Cross-calibration of Chandra and XMM-Newton