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 the Swift X-ray Cluster Survey (SWXCS) catalog obtained usingarchival data from the X-ray telescope (XRT) on board the Swift satelliteacquired from 2005 to 2012, extending the first release of the SWXCS. Thecatalog provides positions, soft fluxes, and, when possible, opticalcounterparts for a flux-limited sample of X-ray group and cluster candidates.We consider the fields with Galactic latitude |b| > 20 degree to avoid high HIcolumn densities. We discard all of the observations targeted at groups orclusters of galaxies, as well as particular extragalactic fields not suitableto search for faint extended sources. We finally select ~3000 useful fieldscovering a total solid angle of ~400 degree^2. We identify extended sourcecandidates in the soft-band (0.5-2keV) images of these fields using thesoftware EXSdetect, which is specifically calibrated for the XRT data.Extensive simulations are used to evaluate contamination and completeness as afunction of the source signal, allowing us to minimize the number of spuriousdetections and to robustly assess the selection function. Our catalog includes263 candidate galaxy clusters and groups down to a flux limit of 7E-15erg/cm^2/s in the soft band, and the logN-logS is in very good agreement withprevious deep X-ray surveys. The final list of sources is cross-correlated withpublished optical, X-ray, and SZ catalogs of clusters. We find that 137 sourceshave been previously identified as clusters, while 126 are new detections.Currently, we have collected redshift information for 158 sources (60% of theentire sample). Once the optical follow-up and the X-ray spectral analysis ofthe sources are complete, the SWXCS will provide a large and well-definedcatalog of groups and clusters of galaxies to perform statistical studies ofcluster properties and tests of cosmological models.

The Swift X-ray Telescope Cluster Survey III: Cluster Catalog from 2005-2012 Archival Data