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Title: Cluster Cosmology Constraints from the 2500 deg2 SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope

Journal Article · · The Astrophysical Journal (Online)
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We derive cosmological constraints using a galaxy cluster sample selected from the 2500 deg(2) SPT-SZ survey. The sample spans the redshift range 0.25 < z < 1.75 and contains 343 clusters with SZ detection significance xi > 5. The sample is supplemented with optical weak gravitational lensing measurements of 32 clusters with 0.29 < z < 1.13 (from Magellan and Hubble Space Telescope) and X-ray measurements of 89 clusters with 0.25 < z < 1.75 (from Chandra). We rely on minimal modeling assumptions: (i) weak lensing provides an accurate means of measuring halo masses, (ii) the mean SZ and X-ray observables are related to the true halo mass through power-law relations in mass and dimensionless Hubble parameter E(z) with a priori unknown parameters, and (iii) there is (correlated, lognormal) intrinsic scatter and measurement noise relating these observables to their mean relations. We simultaneously fit for these astrophysical modeling parameters and for cosmology. Assuming a flat nu Lambda CDM model, in which the sum of neutrino masses is a free parameter, we measure Omega(m) = 0.276 +/- 0.047, sigma(8) = 0.781 +/- 0.037, and sigma(8)(Omega(m)/0.3)(0.2) = 0.766 +/- 0.025. The redshift evolutions of the X-ray Y-X-mass and M-gas-mass relations are both consistent with self-similar evolution to within 1 sigma. The mass slope of the Y-X-mass relation shows a 2.3 sigma deviation from self-similarity. Similarly, the mass slope of the M-gas-mass relation is steeper than self-similarity at the 2.5 sigma level. In a nu omega CDM cosmology, we measure the dark energy equation-of-state parameter w = -1.55 +/- 0.41 from the cluster data. We perform a measurement of the growth of structure since redshift z similar to 1.7 and find no evidence for tension with the prediction from general relativity. This is the first analysis of the SPT cluster sample that uses direct weak-lensing mass calibration and is a step toward using the much larger weak-lensing data set from DES. We provide updated redshift and mass estimates for the SPT sample.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Aeronautics and Space Administration (NASA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Organization:
SPT
Grant/Contract Number:
AC02-07CH11359; AC02-06CH11357
OSTI ID:
1490847
Alternate ID(s):
OSTI ID: 1591754
Report Number(s):
arXiv:1812.01679; FERMILAB-PUB-18-692-AE; 1707055
Journal Information:
The Astrophysical Journal (Online), Vol. 878, Issue 1; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 137 works
Citation information provided by
Web of Science

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Cited By (15)

The Galaxy Cluster Mass Scale and Its Impact on Cosmological Constraints from the Cluster Population journal February 2019
KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data journal January 2020
Implications of a transition in the dark energy equation of state for the H 0 and σ 8 tensions journal December 2019
Weak lensing measurements of the APEX-SZ galaxy cluster sample journal June 2019
Ellipticity of brightest cluster galaxies as tracer of halo orientation and weak-lensing mass bias journal November 2019
Tomographic measurement of the intergalactic gas pressure through galaxy–tSZ cross-correlations journal December 2019
The impact of the observed baryon distribution in haloes on the total matter power spectrum journal December 2019
Spherical collapse in coupled quintessence with a Λ CDM background journal January 2020
Suppressing the Thermal SZ-induced Variance in CMB-cluster Lensing Estimators journal December 2019
Constraints on Cosmological Parameters from the 500 deg 2 SPTPOL Lensing Power Spectrum journal January 2020
The galaxy cluster mass scale and its impact on cosmological constraints from the cluster population text January 2019
Weak lensing measurements of the APEX-SZ galaxy cluster sample text January 2019
Constraints on Cosmological Parameters from the 500 deg$^2$ SPTpol Lensing Power Spectrum text January 2019
Ellipticity of Brightest Cluster Galaxies as tracer of halo orientation and weak-lensing mass bias text January 2019
Modelling baryonic feedback for survey cosmology text January 2019


Figures / Tables (31)

Figure 1(p. 4)figure Figure 1
Figure 2(p. 5)figure Figure 2
Table 1(p. 7)table Table 1
Figure 3(p. 9)figure Figure 3
Table 2(p. 11)table Table 2
Table 3(p. 12)table Table 3
Figure 4(p. 13)figure Figure 4
Figure 5(p. 13)figure Figure 5
Figure 6(p. 14)figure Figure 6
Figure 7(p. 14)figure Figure 7
Figure 8(p. 16)figure Figure 8
Figure 9(p. 16)figure Figure 9
Figure 10(p. 17)figure Figure 10
Figure 11(p. 17)figure Figure 11
Figure 12(p. 19)figure Figure 12
Figure 13(p. 20)figure Figure 13
Figure 14(p. 22)figure Figure 14
Table 4(p. 23)table Table 4
Figure-15(p. 28)figure Figure-15
Figure 16(p. 29)figure Figure 16
Figure 17(p. 30)figure Figure 17
Figure 18(p. 32)figure Figure 18
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 33)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 34)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 35)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 36)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 37)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 38)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 39)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 40)table Table 5
c, and YSZ are the same as presented in Bleem et al. (2015), while the redshifts marked with * have been updated. Spectroscopic redshifts are quoted without uncertainties. The mean mass estimates and mass uncertainties take the intrinsic and measurement scatter into account. We quote redshift lower limits for unconFI rmed SZ detections. The mass estimates M500c and M200c are derived from the SPTcl dataset in the vΛCDM model (Table 3 column 3) and are fully marginalized over cosmology and scaling relation parameter uncertainties. The estimates M$$no syst.\atop{500c}$$ are computed assuming a fi xed cosmology and using the best- t scaling relation parameters obtained from fi tting the SPT-SZ number counts against that fixed cosmology (this approach was also adopted in Bleem et al. 2015). The full catalog with ξ > 4:5 can be found at https://pole.uchicago.edu/public/data/sptsz-clusters." data-ostiid="1490847">
Table 5(p. 41)table Table 5