The comptonization parameter from simulations of single-frequency, single-dish, dual-beam, cm-wave observations of galaxy clusters and mitigating CMB confusion using the Planck sky survey

Abstract

Systematic effects in dual-beam, differential, radio observations of extended objects are discussed in the context of the One Centimeter Receiver Array (OCRA). We use simulated samples of Sunyaev-Zel'dovich (SZ) galaxy clusters at low ($z<0.4$) and intermediate ($0.4<z<1.0$) redshifts to study the implications of operating at a single frequency (30 GHz) on the accuracy of extracting SZ flux densities and of reconstructing comptonization parameters with OCRA. We analyze dependences on cluster mass, redshift, observation strategy, and telescope pointing accuracy. Using $Planck$ data to make primary cosmic microwave background (CMB) templates, we test the feasibility of mitigating CMB confusion effects in observations of SZ profiles at angular scales larger than the separation of the receiver beams.

arXiv comment13 pages, 11 figures; typo and language corrected; concise version; results unchanged; accepted for publication in JCAP

References in corpus (28)

• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Efficient Computation of CMB anisotropies in closed FRW models
• Chandra sample of nearby relaxed galaxy clusters: mass, gas fraction, and mass-temperature relation
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• Planck 2015 results. XVII. Constraints on primordial non-Gaussianity
• The Atacama Cosmology Telescope: Sunyaev-Zel'dovich Selected Galaxy Clusters at 148 GHz from Three Seasons of Data
• Planck 2015 results. XVI. Isotropy and statistics of the CMB
• Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample
• A full sky, low foreground, high resolution CMB map from WMAP
• Galaxy clusters discovered via the Sunyaev-Zel'dovich effect in the first 720 square degrees of the South Pole Telescope survey
• Planck 2015 results. IX. Diffuse component separation: CMB maps
• Planck 2015 results. VIII. High Frequency Instrument data processing: Calibration and maps
• The Arcminute Microkelvin Imager
• Catalog Extraction in SZ Cluster Surveys: a matched filter approach
• The NIKA2 instrument, a dual-band kilopixel KID array for millimetric astronomy
• First observation of the thermal Sunyaev-Zel'dovich effect with kinetic inductance detectors
• The XXL Survey V: Detection of the Sunyaev-Zel'dovich effect of the Redshift 1.9 Galaxy Cluster XLSSU J021744.1-034536 with CARMA
• Final Results from the BIMA CMB Anisotropy Survey and Search for Signature of the SZ effect
• Preliminary Sunyaev Zel'dovich Observations of Galaxy Clusters with OCRA-p
• Sunyaev Zel'dovich observations of a statistically complete sample of galaxy clusters with OCRA-p
• Galaxy cluster scaling relations measured with APEX-SZ
• AMI observations of ten CLASH galaxy clusters: SZ and X-ray data used together to determine cluster dynamical states
• CARMA follow-up of the northern unconfirmed PLANCK galaxy cluster candidates
• One Centimetre Receiver Array-prototype observations of the CRATES sources at 30 GHz
• Clear sky atmosphere at cm-wavelengths from climatology data
• Simulations of cm-wavelength Sunyaev-Zel'dovich galaxy cluster and point source blind sky surveys and predictions for the RT32/OCRA-f and the Hevelius 100-m radio telescope
• AMiBA: Cluster Sunyaev-Zel'dovich Effect Observations with the Expanded 13-Element Array
• The gas distribution in the high-redshift cluster MS 1054-0321

Cited by in corpus (1)

• Improving pointing of Toruń 32-m radio telescope: effects of rail surface irregularities