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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present results from a combined weak lensing and X-ray analysis of themerging cluster A1914 at a redshift of $z=0.1712$ based on $R_{\rm}$-bandimaging data with Subaru/Suprime-Cam and archival Chandra X-ray data. Based onthe weak-lensing and X-ray data we explore the relationships between clusterglobal properties, namely the gravitational mass, the bolometric X-layluminosity and temperature, the gas mass and the gas mass fraction, as afunction of radius. We found that the gas mass fractions within $r_{2500}$ and$r_{{\rm vir}}$ are consistent with the results of earlier X-ray clusterstudies and of cosmic microwave background studies based on the WMAPobservations, respectively. However, the observed temperature, $k_B T_{\rmave}=9.6\pm0.3 {\rm keV}$, is significantly higher than the virial temperature,$k_B T_{\rm vir}=4.7\pm0.3 {\rm keV}$ derived from the weak lensing distortionmeasurement. The X-ray bolometric luminosity and temperature  ($L_X-T$) relation is consistent with the $L_X-T$ relation derived byprevious statistical X-ray studies of galaxy clusters. Such correlations amongthe global cluster properties are invaluable observational tools for studyingthe cluster merger physics. Our results demonstrate that the combination ofX-ray and weak-lensing observations is a promising, powerful probe of thephysical processes associated with cluster mergers as well as of their massproperties.Comment: 3 pages, To appear in the Proceedings of "Heating vs. Cooling in  Galaxies and Clusters of Galaxies", August 2006, Garching (Germany

Observational Constraints on the ICM Temperature Enhancement by Cluster Mergers