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

Context: In the past decade, sensitive, resolved Sunyaev-Zel'dovich (SZ)studies of galaxy clusters have become common. Whereas many previous SZ studieshave parameterized the pressure profiles of galaxy clusters, non-parametricreconstructions will provide insights into the thermodynamic state of theintracluster medium (ICM). Aims: We seek to recover the non-parametric pressureprofiles of the high redshift ($z=0.89$) galaxy cluster CLJ 1226.9+3332 asinferred from SZ data from the MUSTANG, NIKA, Bolocam, and Planck instruments,which all probe different angular scales. Methods: Our non-parametric algorithmmakes use of logarithmic interpolation, which under the assumption ofellipsoidal symmetry is analytically integrable. For MUSTANG, NIKA, and Bolocamwe derive a non-parametric pressure profile independently and find goodagreement among the instruments. In particular, we find that the non-parametricprofiles are consistent with a fitted gNFW profile. Given the ability of Planckto constrain the total signal, we include a prior on the integrated Compton Yparameter as determined by Planck. Results: For a given instrument, constraintson the pressure profile diminish rapidly beyond the field of view. The overlapin spatial scales probed by these four datasets is therefore critical inchecking for consistency between instruments. By using multiple instruments,our analysis of CLJ 1226.9+3332 covers a large radial range, from the centralregions to the cluster outskirts: $0.05 R_{500} < r < 1.1 R_{500}$. This is awider range of spatial scales than is typical recovered by SZ instruments.Similar analyses will be possible with the new generation of SZ instrumentssuch as NIKA2 and MUSTANG2.

A multi-instrument non-parametric reconstruction of the electron pressure profile in the galaxy cluster CLJ1226.9+3332