scholarly journals Sunyaev–Zel’dovich effect and X-ray scaling relations from weak lensing mass calibration of 32 South Pole Telescope selected galaxy clusters

2018 ◽  
Vol 483 (3) ◽  
pp. 2871-2906 ◽  
Author(s):  
J P Dietrich ◽  
S Bocquet ◽  
T Schrabback ◽  
D Applegate ◽  
H Hoekstra ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Weak Lensing ◽  
Scaling Relations ◽  
South Pole ◽  
X Ray ◽  
South Pole Telescope ◽  
Sunyaev Zel'dovich Effect ◽  
Mass Calibration

scholarly journals Weak-lensing mass calibration of the Sunyaev–Zel’dovich effect using APEX-SZ galaxy clusters

2018 ◽  
Vol 488 (2) ◽  
pp. 1728-1759 ◽  
Author(s):  
A Nagarajan ◽  
F Pacaud ◽  
M Sommer ◽  
M Klein ◽  
K Basu ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Accurate Determination ◽  
Sample Selection ◽  
Weak Lensing ◽  
Scaling Relations ◽  
Precision Data ◽  
X Ray ◽  
Cluster Mass ◽  
Direct Observations ◽  
Sunyaev Zel'dovich Effect

ABSTRACT The use of galaxy clusters as precision cosmological probes relies on an accurate determination of their masses. However, inferring the relationship between cluster mass and observables from direct observations is difficult and prone to sample selection biases. In this work, we use weak lensing as the best possible proxy for cluster mass to calibrate the Sunyaev–Zel’dovich (SZ) effect measurements from the APEX-SZ experiment. For a well-defined (ROSAT) X-ray complete cluster sample, we calibrate the integrated Comptonization parameter, YSZ, to the weak-lensing derived total cluster mass, M500. We employ a novel Bayesian approach to account for the selection effects by jointly fitting both the SZ Comptonization, YSZ–M500, and the X-ray luminosity, Lx–M500, scaling relations. We also account for a possible correlation between the intrinsic (lognormal) scatter of Lx and YSZ at fixed mass. We find the corresponding correlation coefficient to be $r= 0.47_{-0.35}^{+0.24}$, and at the current precision level our constraints on the scaling relations are consistent with previous works. For our APEX-SZ sample, we find that ignoring the covariance between the SZ and X-ray observables biases the normalization of the YSZ–M500 scaling high by 1–2σ and the slope low by ∼1σ, even when the SZ effect plays no role in the sample selection. We conclude that for higher precision data and larger cluster samples, as anticipated from on-going and near-future cluster cosmology experiments, similar biases (due to intrinsic covariances of cluster observables) in the scaling relations will dominate the cosmological error budget if not accounted for correctly.

scholarly journals GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV-ZEL’DOVICH EFFECT IN THE FIRST 720 SQUARE DEGREES OF THE SOUTH POLE TELESCOPE SURVEY

2013 ◽  
Vol 763 (2) ◽  
pp. 127 ◽  
Author(s):  
C. L. Reichardt ◽  
B. Stalder ◽  
L. E. Bleem ◽  
T. E. Montroy ◽  
K. A. Aird ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
South Pole ◽  
The South ◽  
South Pole Telescope ◽  
Sunyaev Zel'dovich Effect

scholarly journals Scaling relations and mass calibration of the X-ray luminous galaxy clusters at redshift ~0.2: XMM-Newton observations

2007 ◽  
Vol 467 (2) ◽  
pp. 437-457 ◽  
Author(s):  
Y.-Y. Zhang ◽  
A. Finoguenov ◽  
H. Böhringer ◽  
J.-P. Kneib ◽  
G. P. Smith ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Scaling Relations ◽  
X Ray ◽  
Mass Calibration

scholarly journals X-RAY PROPERTIES OF THE FIRST SUNYAEV-ZEL'DOVICH EFFECT SELECTED GALAXY CLUSTER SAMPLE FROM THE SOUTH POLE TELESCOPE

2011 ◽  
Vol 738 (1) ◽  
pp. 48 ◽  
Author(s):  
K. Andersson ◽  
B. A. Benson ◽  
P. A. R. Ade ◽  
K. A. Aird ◽  
B. Armstrong ◽  
...  
Keyword(s):  
Galaxy Cluster ◽  
South Pole ◽  
The South ◽  
X Ray ◽  
Cluster Sample ◽  
South Pole Telescope ◽  
Sunyaev Zel'dovich Effect

scholarly journals WEAK-LENSING MASS MEASUREMENTS OF FIVE GALAXY CLUSTERS IN THE SOUTH POLE TELESCOPE SURVEY USING MAGELLAN/MEGACAM

2012 ◽  
Vol 758 (1) ◽  
pp. 68 ◽  
Author(s):  
F. W. High ◽  
H. Hoekstra ◽  
N. Leethochawalit ◽  
T. de Haan ◽  
L. Abramson ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
Weak Lensing ◽  
South Pole ◽  
The South ◽  
Mass Measurements ◽  
South Pole Telescope

scholarly journals HIGH-REDSHIFT COOL-CORE GALAXY CLUSTERS DETECTED VIA THE SUNYAEV-ZEL'DOVICH EFFECT IN THE SOUTH POLE TELESCOPE SURVEY

2012 ◽  
Vol 761 (2) ◽  
pp. 183 ◽  
Author(s):  
D. R. Semler ◽  
R. Šuhada ◽  
K. A. Aird ◽  
M. L. N. Ashby ◽  
M. Bautz ◽  
...  
Keyword(s):  
Galaxy Clusters ◽  
High Redshift ◽  
South Pole ◽  
The South ◽  
South Pole Telescope ◽  
Sunyaev Zel'dovich Effect
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