GBT15A-322

Observing CLASH with MUSTANG-1.5

Abstract

Galaxy clusters are unique laboratories that provide insights into cosmology and intra-cluster gas physics. Observing galaxy clusters via the Sunyaev-Zel'dovich effect (SZE) yields a redshift independent measurement of the line of sight pressure in a cluster, thus the SZE is a powerful survey tool. Instruments such as ACT, Planck, and SPT are currently surveying the skies, but their low resolution deprives them of astrophysical information that may bias their cosmological interpretations: the slope of the inner pressure profile, and to a lesser extent, substructure in the SZE. MUSTANG has been engaged in a survey of CLASH clusters with the GBT and has had a detection rate of 35%. The sensitivity and field of view of MUSTANG-1.5 will allow for a rapid completion of the CLASH sample with solid detections. Joint analysis with lower resolution SZ data will yield well constrained pressure profiles.

Investigators

Name	Institution
Brian Mason	National Radio Astronomy Observatory
Sara Stanchfield	Pennsylvania, University of
Sandor Molnar	Academia Sinica
Charles Romero *	Pennsylvania, University of; Virginia, University of; Center for Astrophysics | Harvard & Smithsonian
Tony Mroczkowski	European Southern Observatory; Institut de Ciències de l'Espai
Alexander Young	Pennsylvania, University of
Simon Dicker	Pennsylvania, University of
Tracy Clarke	Naval Research Laboratory
Keiichi Umetsu	Academia Sinica
Erik Reese	Pennsylvania, University of; Moorpark College
Jack Sayers	California Institute of Technology
Mark Devlin	Pennsylvania, University of
Ashley Reichart	Pennsylvania, University of
Jonathan Sievers	Toronto, University of; McGill University; Princeton University; KwaZulu-Natal, University of
Craig Sarazin	Virginia, University of
Tom Broadhurst	País Vasco, Universidad del
Patrick Koch	Academia Sinica
Marc Postman	Space Telescope Science Institute
Adi Zitrin	Ben-Gurion University
Dan Coe	Space Telescope Science Institute

* indicates the PI