Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 808, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/2041-8205/808/1/L6
Keywords
cosmology: observations; galaxies: clusters: general; galaxies: clusters: individual (PLCK G147.3-16.6); galaxies: clusters: intracluster medium; X-rays: galaxies: clusters
Categories
Funding
- 6.1 Base funding
- NASA ADP grant [NNX13AE83G]
- NASA through the Einstein Postdoctoral grant by the Chandra X-ray Center [PF2-130104]
- NASA [NAS8-03060]
- National Radio Astronomy Observatory, a facility of the National Science Foundation (NSF)
- NSF [1020981, 1106284]
- INSU/CNRS (France)
- MPG (Germany)
- IGN (Spain)
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1020981, 1106284] Funding Source: National Science Foundation
- NASA [474286, NNX13AE83G] Funding Source: Federal RePORTER
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The Planck satellite has recently completed an all-sky galaxy cluster survey exploiting the thermal Sunyaev-Zel'dovich (SZ) effect to locate some of the most massive systems observable. With a median redshift of < z > = 0.22, the clusters found by Planck at z > 0.3 are proving to be exceptionally massive and/or disturbed systems. One notable Planck discovery at z = 0.645, PLCK G147.3-16.6, has an elongated core and hosts a radio halo, indicating it is likely in the process of merging. We present a 16 ''.5 resolution SZ observation of this high-z merger using the Goddard-IRAM Superconducting 2-Millimeter Observer, and compare it to X-ray follow-up observations with XMM-Newton. We find the SZ pressure substructure is offset from the core components seen in X-ray. We interpret this as possible line of sight temperature or density substructure due to the on-going merger.
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